Fisher 657 Direct-Acting Pneumatic Actuator Size 50 0.2 to 1.0 bar (3 to 15 psig)

657-50-3-15

Fisher 657 direct-acting actuator, Size 50, 0.2 to 1.0 bar (3 to 15 psig). High thrust capability, molded diaphragm, rugged cast iron/steel construction. Genuine, ready stock, bulk pricing available.

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The Fisher 657 direct-acting diaphragm actuator (Size 50, 0.2 to 1.0 bar (3 to 15 psig)) features a molded diaphragm in a deep casing for excellent linearity, high thrust capability, and rugged thick-walled cast iron or steel construction. Its split-block stem connection provides solid motion transfer for accurate valve positioning.

Key Features

  • Maximum allowable thrust 25131 N
  • SIL3 capable, certified by exida
  • Effective diaphragm area 677 cm2, 51 mm travel
  • Split-block stem connection for solid motion transfer
  • Direct-acting, spring-opposed design for fail-safe positioning
  • Top- and side-mounted handwheels available

Full Configuration Details

Complete Ordering Code:
657
Actuator Specifications
Size
Actuator Size
Size 50
Spring
Spring Range
0.2 to 1.0 bar (3 to 15 psig)
Area
Effective Diaphragm Area
677 cm2
Travel
Maximum Travel
51 mm
Thrust
Max Allowable Thrust
25131 N
Action
Action
Direct-acting
Temp
Temperature Range
-40 to 82 C (standard)
Conn
Signal Connection
1/4 NPT internal

Wholesale Pricing, Genuine & In Stock

Bulk and OEM pricing on Fisher 657 diaphragm actuators, all 100% original and brand new. Ready stock, 48-hour dispatch, and a full 1-year warranty. We quote volume orders within 12 hours.

Request a Quote

Email: sales@gt-exim.com  |  WhatsApp: +86 17719526488

Full Configuration Details

Complete Ordering Code:
657
Actuator Specifications
Size
Actuator Size
Size 50
Spring
Spring Range
0.2 to 1.0 bar (3 to 15 psig)
Area
Effective Diaphragm Area
677 cm2
Travel
Maximum Travel
51 mm
Thrust
Max Allowable Thrust
25131 N
Action
Action
Direct-acting
Temp
Temperature Range
-40 to 82 C (standard)
Conn
Signal Connection
1/4 NPT internal

Documents

Manuals: