Fisher SS-263 Volume Booster

Fisher SS-263 Volume Booster

Fisher™ SS-263 volume booster is used exclusively in Fisher Optimized Digital Valve (ODV) packages. It amplifies the output signal from the FIELDVUE™ digital valve controller to increase the stroking speed of pneumatic actuators. It can deliver high-volume output for fast stroking speeds when responding to large input signal changes or smooth, stable, low-volume output when responding to small input signal changes. This allows stable, accurate throttling control which is often necessary during the startup or commissioning of process control equipment.

Any questions?

Jörgen Sundin
Solution Seller
Phone. +46 54-57 92 12

Martin Bengtsson
Solution Seller
Phone. +46 54-57 92 50

Anders Praem
Inside Sales Engineer
Phone. +45 2137 7759

Aleksei Seleznev
Inside Sales Engineer
Phone. +358 40 530 2017

Henna Ketoja
Inside Sales Engineer
Mob. +358 400 612 124

Port Diameters Supply port: 19 mm (0.75 inch)
Exhaust Port: 19 mm (0.75 inch)
Input Signal Positioner output
Maximum Input Signal Pressure 10.3 bar (150 psig)
Input to Output Pressure Ratio Fixed at 1 to 1
Supply Pressure Ranges Maximum pressure must not exceed 10.3 bar (150 psig)
Operating Temperature -40 to 71 C (-40 to 160 F)
Maximum Flow Coefficients Supply: 9.5 Cv
Exhaust 9.5 Cv
C1: 35
Xt: 0.77
Connections Input signal: 1/4 NPT
Supply: 1 NPT
Output: 1 or 1-1/4 NPT
Hazardous Area Classification Complies with the requirements of ATEX Group II Category 2 Gas and Dust
Declaration of SEP Fisher Controls International LLC declares this product to be in compliance with Article 3 paragraph 3 of the Pressure Equipment Directive (PED) 97 / 23 /EC. It was designed and manufactured in accordance with Sound Engineering Practice (SEP)
Approximate Weight Aluminum: 3.6 kg (8 lbs)
Stainless Steel: 10.8 kg (24 lbs)
  • Fast Response: The SS-263 delivers high-volume output for fast stroking speeds when responding to large input signal changes and low-volume output when responding to small input changes.
  • High capacity: Flow capacities of roughly three times higher than the 2625 booster result in the need for fewer fittings, tubing, and units.
  • Noise Attenuation: Exhaust is passed through specially-designed passages to reduce the amountof ambient noise that is generated.
  • Adjustable Response: The integral bypass restriction allows the booster to be easily and readily tuned to operate under small or large input signal changes.
  • Auxiliary Supply Connections: Supply air is readily available through two 1/4 NPT connections that are built into both sides of the unit for use with a Fisher 377 trip valve or other accessory.
  • 3 in 1 Connection: This special connection can provide any of the following connections, if needed: 1/4 NPT diagnostic connection for easy testing, 1/4 NPT actuator bypass assembly connection foruse on an actuator with a handwheel, and 3/4 NPT connection
  • Soft-Seated Construction: Soft seated exhaust and supply valves provide for bubble tight shutoff toreduce unnecessary air consumption and ensure fail mode upon loss of plant air.
  • Robust Mounting: Flanged-style actuator mounting provides ease of maintenance, simplifiedtubing, compactness, and high vibration resistance.

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