Happy Holidays from Ives Equipment

"Christmas gift suggestions: To your enemy, forgiveness. To an opponent, tolerance. To a friend, your heart. To a customer, service. To all, charity. To every child, a good example. To yourself, respect." — Oren Arnold

The Sensidyne SensAir CMB Poison Resistant Catalytic Bead Gas Detector


SensAir CMB, by leading gas detection equipment manufacturer Sensidyne, is an industrial grade, cost effective, fixed point gas detector with a highly poison resistant catalytic bead sensor.

The SensAir Gas Detector is a single-point device capable of detecting the presence of various gases. The detector detects gas in either ppm, %Volume or %LEL concentrations. The standard detector consists of a display board and a power supply board, housed in a heavy-duty enclosure, a sensor specifically designed to detect Oxygen, Toxic or Combustible gases, and optionally, a relay/communication board. A complete monitoring system consists of the detector and a separate read-out device & power supply capable of monitoring a 4-20 mA output and supplying 24 VDC power. There are versions of the detector for hazardous and non-hazardous areas.

SenseAir CMB Features

  • Combustible, Toxic, and Oxygen Versions Available
  • U.S./Canada/IECEx/ATEX Hazardous Area Approved
  • Rugged, Industrial, Cost Effective Design Meets a Wide Range of Application and Project Requirements
  • Robust, Fast Responding Sensors
  • Bright LED Display Model or Lower Cost Blind Model
  • Non-Intrusive Zero & Span Adjustments
  • Easy Installation and Maintenance, Ideal for Retrofit or New Applications
  • 3-wire Design with 4-20mA Output, Options for Modbus or BACnet—Both include 3 Additional Relays
  • Horizontal or Vertical Installation
  • Remote Combustible Sensor Option
  • Field Replaceable Sensor
For more information, contact Ives Equipment. Call Ives at (877) 768-1600 or visit their web site at https://ivesequipment.com.

Ives Equipment Celebrates Those Who Serve and Protect Our Country

Veterans Day

Veterans Day is a day of observance and celebration for those who have served in the United States military. Veterans Day was originally called Armistice Day because of the November 11 Armistice that ended World War I. In 1954 it was officially changed to Veterans Day to include Veterans of all wars. This holiday honors those who took an oath to defend the United States and our Constitution, from all enemies, foreign and domestic. Through the observance of Veterans Day, we remind ourselves of our Veterans patriotism, love of country and willingness to serve and sacrifice for the common good.

Ives Equipment thanks our Veterans, past and present, for serving our country and protecting our freedom.

White Paper: Predicting Cavitation Damage in Control Valves

Cavitation can occur in control valves handling fluids, causing loud noise as well as damaging valve components and ultimately leading to additional costs in process plants. A standardized procedure to evaluate the destructiveness of cavitation-induced still does not exist whereas noise emission can reliably be predicted with the international EN 60534-8-4 standard. This white paper, courtesy of Samson Controls, describes a method to solve this problem by evaluating structure-borne noise in the ultrasonic range.

DOWNLOAD THE WHITE PAPER HERE


For more information on the application of control valves, contact Ives Equipment. Call (877) 768-1600 or visit https://ivesequipment.com.

The Samson 82.7 Rotary Plug Control Valve

Samson 82.7 Rotary Plug Control Valve
The Samson 82.7 double eccentric rotary plug control valve is designed for standard and critical service applications, including process events such as erosion, abrasion, corrosion, cavitation, and flashing. The double eccentric rotary plug design increases flow capacities with only minor reduction in the pressure recovery factor making the design an ideal replacement for linear globe control designs even with cavitation and flashing process conditions present.

The 82.7 control valve has several standard options such as temperature extensions, heating jacket, special packing designs, noise attenuation and cavitation prevention trim sets, etc. The Vetec 82.7 can be assembled with a pneumatic, electric, hydraulic, or electro-hydraulic actuator also offered by the SAMSON group to complete the control valve construction. These control valves are designed according to the modular assembly principle, can be equipped with SAMSON GROUP actuators and valve accessories such as positioners, limit switches, and solenoid valves.



For more information contact Ives Equipment. Call their main office at (877) 768-1600 of visit their web site at https://ivesequipment.com.

The Siemens Milltronics MSI Belt Scale


The Siemens Milltronics MSI is a high accuracy, full frame,  heavy-duty single idler belt scale used for process and load-out control suitable for monitoring products as diverse as sand, flour, coal, or even sugar. The Siemens Milltronics MSI belt scale provides continuous in-line weighing on a variety of products in primary and secondary industries and is proven in a wide range of extremely tough applications in mines, quarries, pits, power generating stations, iron and steel foundries, food processing plants, and chemical production facilities.

The Siemens Milltronics MSI patented use of parallelogram-style load cells results in fast reaction to vertical forces, ensuring instant response to product loading. This enables it to provide outstanding accuracy and repeatability even with uneven loading and fast belt speeds.

For more information, contact Ives Equipment by calling (877) 768-1600 or visit https://ivesequipment.com.

The Alfa Laval Unique Mixproof CP-3 Valve


Offering all dairy, food and beverage processors optimum hygiene, reliable effectiveness and decreased ownership expenses. Not just a dairy valve, the Alfa Laval Unique CP-3 is a reduced vent mix-proof valve – designed to be configurable and to protect your product.

Food and beverage plants across the United States are now using this proven mix-proof technology to eliminate cross-contamination – while improving overall production safety, hygiene, and production.

Beverage:


The Unique mix-proof CP-3 can be configured to handle carbonated drinks or energy drinks based on sugar and syrup – perfect for syrup or recipe room manifolds. Cleaning plugs and seats during seat-lifting eliminates sugar or syrup build-up.

Cleaning time and eventually modifications in the recipe are quicker as only two seals are situated in the valve chamber – enabling quicker valve cleaning during seat lift with fewer seal spare parts needed, improving valve longevity.

Food:


The Unique mix-proof CP-3 also has a setup to handle the most viscous condiments such as ketchup and mayonnaise and can assist address complicated problems in food processing – such as keeping the texture and taste of soups or vegetable sauces.

While it can be hard for any viscous food application to clean mix-proof valves with narrow plug tolerances, the starches left behind pose the greatest cleaning challenge. The valve seat is built on the upper and lower seat plugs with throttling corners – which speeds up cleaning fluid to enhance CIP effectiveness and clean the most stubborn food residue with the absolute minimum quantity of CIP fluid resources being used.

For more information, contact:
Ives Equipment
https://ivesequipment.com
(877) 768-1600

Explosion-Proof Meters, Annunciators and Batch Controllers Built to Work in a Wide Range of Applications and Environments

PD8-6000
Front, back and in between, the PD8-6000 explosion-proof process meter boasts specifications, features and functionality that make it the only hazardous area process meter you will ever need.

The PD8-6000 is approved as a complete product by FM and CSA and also carriers IECEx approvals. Besides being suitable for hazardous areas, the number one feature that makes the PD8-6000 such a useful device is its built-in 24 VDC power supply to drive the transmitter as illustrated by the above diagram. This feature not only saves the cost of an external power supply, but also greatly simplifies wiring. In addition, there is a second 25 mA power supply provided with the 4-20 mA output option

Its superluminous LED digits make it easily readable in smoke, dust, fog, and, with the optional SunBright® display, even direct sunlight. It accepts a process current (4-20 mA) or process voltage (0-5V, 1-5V, etc.) signal and displays it on a dual-line, 6-digit SunBright® sunlight readable display.

The meter includes a 24 VDC power supply to drive the transmitter and can be equipped with up to four internal relays and a 4-20 mA output. The PD8-6000 can be programmed and operated without opening the housing by using the built-in SafeTouch® through-glass buttons or the RS485 serial communication port with free Modbus® protocol.

A fully loaded PD8-6000 meter has the following: four SPDT relays, 4-20 mA output, and two 24 VDC power supplies. The four relays can be used for alarm indication or process control applications such as pump alternation control. The 4-20 mA isolated output, Modbus RTU serial communications, and digital I/O options make the PD8-6000 an excellent addition to any hazardous area application.

For more information, contact Ives Equipment by calling 877-768-1600 or by visiting https://ivesequipment.com.

Reducing Material Waste in Flexible Pet (Polyethylene Terephthalate) Production

Reducing Material Waste in Flexible Pet

Polyester is very popular because it is a light, soft, flexible, low-maintenance material that keeps you warm. Making it this way poses diverse challenges to PET producers.


A chemical plant specializing in producing PET was looking for a solution to reduce the waste resulting from product variance. The factory produces 25,000 tons of polyester annually, which is then provided to other manufacturers to produce a vast range of end products.

SITRANS FC430
The SITRANS FC430
monitors the glycol flow.
This vast range requires different PET grades, which are achieved by slight variations in the synthesis procedures. In order to investigate possible options to upgrade their primary processing, understanding the complete process is vital. In the case of PET production, this process starts with mixing three key ingredients – PTA and IPA powder along with glycol liquid – in specific ratios to make a paste.

These source materials are stored in stainless steel bins with a volume of 2649 ft3. Rotary feeders move the mate- rial from these bins to a batching vessel along with glycol to make the polyester paste. The batching vessel is agitated to ensure that the mixture is always consistent. Monitoring tank levels, precisely controlling the dosing, the efficient use of raw materials and ensuring a consistent mix are the key parameters
SIWAREX WP251
SIWAREX WP251
when it comes to improving the primary processing. When Siemens designed a new system for the chemical plant from the bottom up, the Siemens S7-1200 PLC controller was the first product that was installed to set up a compact and flexible automation solution, which keeps track of the key parameters and the process efficiency.

Don’t get mixed up during mixing

Each raw material bin is mounted on Siwarex WL280 ring torsion load cells to achieve optimum weighing accuracy. These load cells are connected to two Siwarex WP251 weighing modules, which are specifically designed for batching applications. The advantages of this solution are that the WL280 load cells feature a C3 class rating for accuracy as well as an IP68 rating for protection against dust and direct high-pressure cleaning – ideal for handling powder materials such as PTA. In connection with the Siwarex WP251, a customer-specific application was engineered with a resolution of up to +/- 4 million parts.

SITRANS TS500
SITRANS TS500
The glycol as the liquid component in this process is monitored by a Sitrans FC430 coriolis mass flowmeter providing a 4-20 mA output, which varies based on the flow rate of the material. This signal is fed into an analog S7-1200 input module. A Sipart PS2 positioner controls the valves to regulate the flow rate. In such flexible processes as this one, the operator individually sets the setpoint for total production. At the field level, this flexibility is achieved using Sinamics variable frequency drives, which independently adjust the flow rate of each material. To close the loop, the discharge rates from the raw material bins are monitored by the WP251. The output is then processed by the S7-1200 controller, sent through an analog module to control the Sipart PS2 positioner – which in turn allows more or less glycol to flow into the batching vessel. The downstream Sitrans FC430 flow meter additionally verifies the flow rate to ensure a high-quality mix.

How powder and liquid become PET

Pointek CLS200
Pointek CLS200
The temperature of the paste is another crucial factor when it comes to producing high-quality PET. If the agitation causes too much heat, the whole mixture could be lost, causing unwanted waste. In this configuration, a TS500 controls the temperature to the optimum level. To further cut down on product loss, a Pointek CLS200 capacitance- based switch acts as a backup device to ensure that the material discharges completely, and does not build up or overflow. Its high frequency oscillation makes it insensitive to product buildup, therefore guaranteeing reliable level monitoring in the PET paste vessel. For integrated control and alarm management, the level switch is connected to the S7-1200 controller. With 13 sensors, 2 VFDs, 3 geared motors, 4 modules and 1 HMI installed and connected to the control system, the plant managers reap the benefits of a comprehensive portfolio from one supplier. The new equipment is reliable and efficient and – together with the DCS solution – offers excellent process and data control.

Less material waste and reduced downtimes

SIPART PS2
SIPART PS2
Where did this leave the chemical company? After the equipment had been running for 3 months, the first estimates were made as to whether the initial goals of reduced waste and increased efficiency had been met. The result: plant efficiency had increased by 27 % due to the reduced material waste and product loss. Further, the more reliable process measurements and diagnostics help the company to service their equipment on a preventive basis instead of a reactive one, resulting in reduced downtimes and in- creased reliability.

Simplified diagram
Simplified diagram showing the customer’s process.
So the next time, you put on your running gear, take a sip out of a plastic bottle or attach your safety belt, maybe you will remember the effort that goes into producing the PET that is needed to manufacture these types of products. By the way – they have another important characteristic in common as they can be completely recycled.






Ives Equipment
877-768-1600
https://ivesequipment.com

Oil & Gas and Power Grids Have New "Cause for Concern" from Hackers

A report released in June, from the security firm Dragos, describes a worrisome development by a hacker group named, “Xenotime” and at least two dangerous oil and gas intrusions and ongoing reconnaissance on United States power grids.

Multiple ICS (Industrial Control Sectors) sectors now face the XENOTIME threat; this means individual verticals – such as oil and gas, manufacturing, or electric – cannot ignore threats to other ICS entities because they are not specifically targeted.


The Dragos researchers have termed this threat proliferation as the world’s most dangerous cyberthreat since an event in 2017 where Xenotime had caused a serious operational outage at a crucial site in the Middle East.

The fact that concerns cybersecurity experts the most is that this hacking attack was a malware that chose to target the facility safety processes (SIS – safety instrumentation system).

For example, when temperatures in a reactor increase to an unsafe level, an SIS will automatically start a cooling process or immediately close a valve to prevent a safety accident. The SIS safety stems are both hardware and software that combine to protect facilities from life threatening accidents.

At this point, no one is sure who is behind Xenotime. Russia has been connected to one of the critical infrastructure attacks in the Ukraine.  That attack was viewed to be the first hacker related power grid outage.

This is a “Cause for Concern” post that was published by Dragos on June 14, 2019.

“While none of the electric utility targeting events has resulted in a known, successful intrusion into victim organizations to date, the persistent attempts, and expansion in scope is cause for definite concern. XENOTIME has successfully compromised several oil and gas environments which demonstrates its ability to do so in other verticals. Specifically, XENOTIME remains one of only four threats (along with ELECTRUM, Sandworm, and the entities responsible for Stuxnet) to execute a deliberate disruptive or destructive attack.

XENOTIME is the only known entity to specifically target safety instrumented systems (SIS) for disruptive or destructive purposes. Electric utility environments are significantly different from oil and gas operations in several aspects, but electric operations still have safety and protection equipment that could be targeted with similar tradecraft. XENOTIME expressing consistent, direct interest in electric utility operations is a cause for deep concern given this adversary’s willingness to compromise process safety – and thus integrity – to fulfill its mission.

XENOTIME’s expansion to another industry vertical is emblematic of an increasingly hostile industrial threat landscape. Most observed XENOTIME activity focuses on initial information gathering and access operations necessary for follow-on ICS intrusion operations. As seen in long-running state-sponsored intrusions into US, UK, and other electric infrastructure, entities are increasingly interested in the fundamentals of ICS operations and displaying all the hallmarks associated with information and access acquisition necessary to conduct future attacks. While Dragos sees no evidence at this time indicating that XENOTIME (or any other activity group, such as ELECTRUM or ALLANITE) is capable of executing a prolonged disruptive or destructive event on electric utility operations, observed activity strongly signals adversary interest in meeting the prerequisites for doing so.”

Calibration Services for Process Instrumentation


Measuring, positioning, recording, and controlling are important parameters in all industries processes. That’s why process instruments need to deliver the highest levels of precision and reliability.

Today calibration measuring devices is an important production and competitive activity due to steadily increasing demands on reliability, availability and performance.

Off-site Calibration Services

Siemens offers factory calibration services for Pressure, Temperature and Flowmeters from both our own and other manufacturers.

On-site Calibration Services

Siemens offers on-site calibrations for Pressure, Temperature and Belt scale of our own products as well as those of other manufacturers.

This video presents the viewer with explanations and concepts for the following:

  • The Siemens Process Instrument Services overview.
  • A description of field instrument technologies.
  • What calibration means.
  • Reasons for calibrating field devices.
  • The importance of calibration and verification.
  • What traceability means.
  • Why accreditation is needed.
  • The Siemens Factory Calibration process.
  • The Siemens On-site Calibration process.
  • What verification means.
  • Reasons for verification.
  • The Siemens On-site Verification process.

For more information, contact Ives Equipment:
(877) 768-1600
https://ivesequipment.com

What Are Pneumatic Actuators?

rack and pinion actuator
Internal view of rack and pinion actuator
(Flowserve Worcester)
Pneumatic valve actuators are used in extreme conditions in many industries such as oil and gas, chemical, water and wastewater, bulk storage, pulp & paper, and power generation. These devices are used in a multitude of valve control processes for regulation (or cessation) of flow, controlling pressure and adjusting level.  Due to their reliability and simplicity, pneumatic actuators are one of the most popular types of actuators used in industry today.

Pneumatic valve actuators work by conversion of air pressure into motion. The device applies a force of air to a diaphragm, rotary vane, or piston that is attached to the actuator shaft, which is then mechanically connected to the stem of the valve or damper. Depending on the type, pneumatic actuators produce either linear or rotary motion. 

ACTUATOR ACTION - SPRING RETURN OR DOUBLE ACTING

Spring Return — Pneumatic actuators with spring return design have air supplied from one side. The spring on the opposite side is responsible for the motion. With this design, air compression moves the opens or shuts the valves while the spring is responsible for the opposite motion. 

Double Acting  — Double acting actuators have air fed on both sides of a piston. The pressure on one side is higher as compared to the other that results in the required in movement. Air is used to open and close the valves.  

Diaphragm actuator
Diaphragm actuator
(Samson)
PNEUMATIC ACTUATOR DESIGNS

Diaphragm Actuators — Diaphragm actuators work by applying pressure to a thin membrane or diaphragm. 

Piston Actuators — Piston actuators apply compress air to a piston that is within a cylinder. Air is fed into a chamber that moves the piston in one direction. The piston moves in the opposite direction when air pressure is removed (spring assisted) or directed to the other side (double acting). 

Rack and Pinion — Rack and pinion actuators produce rotation by applying pressure to pistons with gears that turn a pinion gear. Rack and pinion actuators can be spring return or double acting. They are valued because of their compact size and versatility.

Scotch Yoke — A scotch-yoke actuator contains a piston, yoke, connecting shaft, and rotary pin.
Scotch yoke actuator
Scotch yoke actuator
(Samson)
They can be direct acting or spring return. They are capable of providing very high torque outputs and are generally used on larger valves. Scotch yoke actuators can be powered by air or process gas.

Rotary Vane —Vane actuators use a mechanical vane, connected to a shaft, that separates a circular shaped body in two "clamshell" halves. The vane moves in response to the differential pressure inside the actuator body, turning the shaft clockwise or counter-clockwise in response to the pressure differential. External springs units are available for spring return models.

BENEFITS OF PNEUMATIC ACTUATORS

The use of compressed air (typically found in all industrial facilities) as the power source is the prime advantage for the use of pneumatic actuators. Additionally, pneumatic actuators have an advantage in suitability for different environments and can be used in extremes temperatures. They are preferred over electrical actuators in explosive, flammable and other hazardous areas because they do not require electricity (a possible ignition source) to operate. They do not create electrical fields or electrical noise since there is no electrical motor. Pneumatic valve actuators are faster opening and closing compared to their electric counterparts. Finally, they are low cost, lightweight, durable, require little maintenance (depending on quality) and there are a myriad of positioning controls, speed controls, and communications devices available for tailoring the actuator to the application.

DRAWBACKS OF PNEUMATIC ACTUATORS

While compressed air is the main reason for using pneumatic actuators, it can also be considered a drawback. For instance, pneumatic actuators can perform poorly when the air supply source is located at a distance, resulting in lag and slow response. Another drawback of pneumatic actuators is the additional cost for the compressed air system due to the requirement of dust filters and moisture removing dryers. These are required to ensure clean air is fed into the system.

APPLYING PNEUMATIC ACTUATORS

There are many aspects to the proper, safe, and efficient application of pneumatic actuators to valves and dampers. Sizing the power output (torque) being paramount. All valves and dampers have unique torque requirements. You must consider a threshold force for opening (breakaway), as the valve continues to move to its open or closed position, and then for seating. Matching the actuators to the valve type, and operating conditions is critical. Published torque curves must be reviewed and understood. Too little torque and the vale will not respond. Too much torque increases cost and can damage the valve. Spring return adds to this complexity. Considering all this, it is strongly suggested you always discuss any valve actuation requirement with an experienced applications expert. They will ensure the proper, safe, and cost effective mating of pneumatic actuator to valve or damper.

What Is IIOT? Understanding Industrial IoT and the Technology Behind It

What Is IIOT
IoT or the internet of things needs no introduction. However, you may want to familiarize yourself with its offshoots such as the Industrial IoT, better known as IIoT. The simplest way to define IIoT would be the implementation of IoT capabilities in an industrial or manufacturing setting.

An amalgamation of various technologies such as big data, machine learning, automation, and sensor data, industrial IoT enables a connected enterprise by combing the information and operational department of the industry. Let’s take a more detailed look at IIoT and the technology behind it.

Understanding IoT

A sector that is rapidly progressing and accounts for a major share in the global IoT spending, IIoT provides manufacturers and industrialists with a significant opportunity to not only monitor but also automate many complex manufacturing/industrial processes. IIoT, a network of connected devices, enables systems to collect, track, disseminate, and analyze valuable new insights.

With these insights, industrial companies can make smarter, faster business decisions. By changing how industries work, IIoT is transforming them. Additionally, businesses are getting desired outcomes by integrating IIoT with other technological solutions. This includes providing production data in real time to unveil additional plant capacity, stopping cyber-attacks through increased visibility or control over the industrial control systems, and allowing identification of corrosion within a refinery pipe through predictive analytics.

IIoT is driving incredible levels of efficiency, productivity, and performance by combining technology, industrial big data analytics, cyber security, and machine-to-machine (M2M) communication. And, this has helped bring transformative operational and financial benefits to companies in the healthcare, aviation, manufacturing, oil & gas and power & energy sectors.

The Future of IIOT

It is predicted that the industrial internet could be worth over $200 billion by 2030. This is the reasons many companies have invested heavily in the industrial internet. Example of this is the Industrial Internet Consortium—an association founded companies to accelerate the development, adoption, and widespread use of interconnected people, machines and devices and intelligent analytics.

SIEMENS is helping drive the industrial transformation by leveraging the potential of the industrial internet. The company predicts that in the future, IIoT will account for a major share of the global economy and will impact both energy production and energy consumption. Today, industries are making all sorts of efforts to modernize systems and equipment to meet new regulations, keep up with increasing speed and volatility of the market and deal with disruptive technologies.

Significant improvements to efficiency, safety, and profitability have been experienced by businesses that have embraced IIoT and this trend is expected to continue in the future as IoT technologies are more widely adopted.

If you want to learn more about IIoT, contact Ives Equipment. The can be reached by visiting https://ivesequipment.com or by calling (877) 768-1600.

Heat Exchangers for Hygienic Use

Alfa Laval provides the widest range of hygienic products and accessories in the world. Designed for superior safety, efficiency and cleanliness, they ensure careful product handling in the food, dairy, beverage, biotech, pharmaceutical and personal care industries. Alfa Laval heat exchangers, valves, automation, pumps, tank equipment and installation material offer solutions for all process stages – and almost certainly the solution you need.

Alfa Laval heat exchangers are designed for heating and cooling, pasteurization and utility duties, and are able to handle even viscous products. By combining Alfa Laval thermal technologies with their many years of industrial experience, Alfa Laval can also provide you with a wide range of tailored solutions.



Ives Equipment
https://ivesequipment.com
(877) 768-1600 

White Paper: Breakthrough Solenoid Valve Technology for Upstream Oil and Gas Heating Equipment

Low-temperature stainless steel fuel shutoff valves are usually utilized for on/off control of fuel gas
within gas fuel trains in process heating system burners. These systems are widely used by oil and gas firms as well by as original equipment manufacturers (OEMs) that produce gas heating equipment or burner management systems (BMSs) and controls in upstream oil and gas pipelines and tanks.

In recent years, a new generation of solenoid valve technology has been changing the shutoff valve game. Their modern designs provide pipeline and tank heating systems with robust, durable performance; safety; and regulatory compliance — all while increasing efficiency and productivity.

Many operators in North America and beyond are moving away from using pneumatically operated shutoff valves on their pipelines and tank heaters. They’re replacing them instead with valves introduced within the last decade by a few manufacturers — all based on solenoid shutoff valve technologies. White paper courtesy of ASCO.


Reversing the Failure Mode of a SAMSON 3271/3277 Actuator from Fail Open to Fail Close


INSTRUCTIONS

WARNING: Actuators with preloaded springs are under tension. They can be identified by three long bolts protruding from the bottom of the actuator. These should be removed last, and installed first upon re-assembly.
  1. With the actuator removed from the valve, unscrew the nuts and bolts on the diaphragm case.
  2. Lift off the top diaphragm case.
  3. Remove the diaphragm plate assembly consisting of the diaphragm plate, diaphragm, and actuator stem from the actuator case.
  4. Remove the springs.
  5. Clamp the bottom section of the actuator stem into a vise using protective jaws, ensuring the actuator stem is not damaged.
  6. Remove the collar nut.
  7. Remove the diaphragm plate from the actuator stem, flip upside-down and place them back onto the actuator stem.
  8. Re-install the collar nut.
  9. If necessary, apply a suitable lubricant to the actuator stem.
  10. Install the diaphragm plate assembly together with the actuator stem pointing downward into the bottom diaphragm case.
  11. Place the springs onto the diaphragm plate, centering them in the intended recesses. The final actuator spring range will determine the appropriate springs to be installed.
  12. Place the top of the actuator case onto the assembly. Ensure that the air connections on the cases are correctly aligned with each other.
  13. Fasten the top and bottom diaphragm cases together using the nuts and bolts. Observe tightening torques.
ABOUT THE SAMSON 3271/3277

The Type 3271 pneumatic rolling diaphragm actuator is designed for all industrial applications. This actuator is a linear motion device ideal for valve sizes ranging from the micro-flow valves to large 20"+ globe control valves.

The Type 3277 pneumatic rolling diaphragm actuator with an integrated accessory attachment area is designed for all industrial applications. This actuator is a linear motion device ideal for valve sizes ranging from the micro-flow valves to 4" globe control valves.

The thrust force of the actuator depends on the actuator area, pneumatic supply pressure, spring stiffness, distance traveled, initial compression of the spring, the number of springs internal to the actuator, etc.

The Type 3271 and Type 3277 Pneumatic Actuators contain a rolling diaphragm and internal springs and have the following special features:
  • Low overall height
  • Powerful thrust at high stroking speed
  • Low friction
  • Various bench ranges by varying the number of springs or
  • their compression
  • No special tools required to change the bench range or to
  • reverse the direction of action (also version with handwheel)
  • Permissible operating temperatures from –60 to +120 °C
For more information on SAMSON Controls, contact Ives Equipment by calling 877-768-1600 or visiting https://ivesequipment.com.

Qualified US Navy Supplier of Valves, Instrumentation, and Analyzers

Ives Equipment, headquartered in King of Prussia, PA, is a qualified US Navy supplier of valves, instrumentation, and analyzers.

As an authorized ASCO, Worcester Valve, Niagara Meter (Venture Measurement), Siemens, and REOTEMP, Ives Equipment is registered under Cage Codes 1H855 and 6F024.

Ives Equipment provides the United State Navy with these products:
  • Manual ball valves ¼” through 2”
  • Pneumatic and electric control valves 1” through 2”
  • Flowmeters ½” through 12”
  • Solenoid valves all sizes 
  • Dual temperature elements
  • Pressure transmitters
  • Temperature transmitters
  • Boiler cameras
  • RTD assemblies
Ives Equipment products meet the following United States Military Standards:
  • MIL-STD-167 valves
  • MIL-STD-167 flow meters
  • Mil-Spec qualified high shock MIL-901D
  • MIL-SPEC Pneumatic and electric control valves
Services provided to the US Navy include:
  • Complete project management / engineering for ShipAlt and MachAlt projects.
  • Wide variety or instrumentation and valving approved to Mil Spec Mil-S-901D Grade A and Mil-STD-167-1.
  • Comprehensive solutions engineering for shipboard applications.
  • Successful shipboard engineering solutions within steam machinery, chilled water, bleed air, refrigeration HVAC, life safety.
Manufacturers:

ASCO Valve Authorized Navy Distributor - ASCO designs and manufactures quality solenoid valves to control the flow of air, gas, water, oil and steam. ASCO's Navy/Marine product line represents a select line of valves designed to meet US Navy specifications.

SIEMENS - Pressure, differential pressure, temperature and level transmitters for US Navy ships.

Worcester Valve (Division of Flowserve) - Having earned a reputation over 45 years for high performance and reliability, Worcester ball valves are installed on submarines and surface ships throughout the world. Their product range of materials includes Nickel Aluminum Bronze (NAB), Monel and Titanium.

Niagara Meters (Venture Measurement) - Niagara Meters is known for their robust and proven flow meter designs. Niagara Meters’ flow meter technology is used by the US Navy for operation on naval ships. Niagara Meters is proud to be a company built on innovation and reliability for which the brand has become known.

REOTEMP - Resistance temperature detector (RTD) assemblies used aboard US Navy ships.

Sensidyne: Flammable & Toxic Gas Detection for Pipeline & Gas Processing Plants

Industry-leading reliability, SensAlert ASI is the ideal fixed-point gas detector for critical safety applications. Flexible configurations and a simple interface provide maximum application versatility while remaining the easiest to install, commission, operate, and maintain.

Download the Flammable & Toxic Gas Detection for Pipeline & Gas Processing Plants guide book at the Ives Equipment website here.

Ives Equipment
https://ivesequipment.com
(877) 768-1600