The Ives Equipment Process Engineering & Control Blog

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.

With the actuator removed from the valve, unscrew the nuts and bolts on the diaphragm case.
Lift off the top diaphragm case.
Remove the diaphragm plate assembly consisting of the diaphragm plate, diaphragm, and actuator stem from the actuator case.
Remove the springs.
Clamp the bottom section of the actuator stem into a vise using protective jaws, ensuring the actuator stem is not damaged.
Remove the collar nut.
Remove the diaphragm plate from the actuator stem, flip upside-down and place them back onto the actuator stem.
Re-install the collar nut.
If necessary, apply a suitable lubricant to the actuator stem.
Install the diaphragm plate assembly together with the actuator stem pointing downward into the bottom diaphragm case.
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.
Place the top of the actuator case onto the assembly. Ensure that the air connections on the cases are correctly aligned with each other.
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.

Clamp-on Ultrasonic Flow Meters for HVAC and District Energy: How They Measure Up

While other flow measurement technologies (e.g. magnetic or vortex flow meters) are also used in district energy applications, clamp-on ultrasonic flow meters are often an optimal solution since they are externally mounted.They are especially well-suited for use with existing hot or chilled water distribution lines. In existing applications they are quick, easy and less expensive to install than other flow meter options because there is no need to cut the line, interrupt service, or drain the pipe. They also do not require the installation of bypass piping and valves for removal; maintenance expense is minimized since they do not have moving parts; and, used outside the pipe, they do not require periodic cleaning.

Clamp-on ultrasonic meters are also very versatile: They can be installed on the full range of district energy line sizes (and more - from 0.5” up to 394”), employed anywhere in the
hot or chilled water distribution process and used to measure two applications simultaneously. They may be installed where an “intrusive” flow meter is not possible or appropriate – when only temporary measurements are needed, for example. All measurements can be logged and time-stamped for creating analyses and reports.

DOWNLOAD THE FULL TECHNICAL PAPER HERE

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

Clamp-on Ultrasonic Flowmeters for HVAC: How They Measure Up from Ives Equipment

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

The SIEMENS SIPART PS2: New Features

The SIEMENS SIPART^® PS2 electro-pneumatic valve positioner is used to control the final control element of pneumatic linear or part-turn valve actuators. It is is currently the most widely used positioner for linear and part-turn actuators in a broad range of process industries. New features have been introduced, namely improved diagnostics, additional integrated pressure sensors, a fast open/fast close function, integrated booster, easy setup, a partial stroke test, fail in place function, and valve performance tests. Watch the video to understand more.

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

Customized Magnetic Flow Meter Solutions Specifically for Your Application

Have it your way.
Siemens Engineering Instrument Solutions (EIS)

Announcing new flow measurement solutions available from Siemens Process Instrumentation.

Siemens Engineering Instrument Solutions (EIS) is proud to offer new customized features for Siemens magnetic flow meters. This enables SIEMENS to take their high performance magnetic flow meter products and customize them to meet a customer’s specific needs. By offering out of the box features that would normally be conducted in the field, customers experience reduced startup time and cost savings.

Custom Cabling Options
Custom Tagging Options
Custom Meter ID Numbers
Custom Programming Options

Billing Digit Format
Register Units
Pulse Outputs Rates/Functionality

Adding Spools and Strainers

Benefits of Siemens magnetic flow meters:

Siemens Magnetic Flow Meter

While the customization features allow for you to fine tune the solutions, Siemens utilizes the already strong capabilities of their magnetic meter. These benefits include:

Remote Transmitter option with factory-mounted cables and connectors
No moving parts resulting in less wear and tear
Bidirectional measurement with no reduction in accuracy
Unrestricted flow tube for minimal pressure loss even at high flow rates
IP68/ NEMA 6P enclosure and cable , allowing for sensor burial and/or operation in flooding conditions
Durable enough to withstand extreme temperatures, high humidity and erosion.

For more information visit about Siemens Engineering Instrument Solutions visit this page.

Ives Equipment
(877) 768-1600

https://ivesequipment.com