Fisher 657 Diaphragm Actuator Size 87 0.2 to 1.0 bar (3 to 15 psig) Direct-Acting
Fisher 657 direct-acting spring-opposed diaphragm actuator, Size 87, 0.2 to 1.0 bar (3 to 15 psig) spring range, 76 mm travel, 1419 cm2 effective diaphragm area. 1-year warranty with wholesale bulk pricing and fast global shipping.
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- 100% Genuine & Brand New
- Global Fast Shipping via DHL/FedEx
- Fast Quotation within 12 Hours
- 1-Year Warranty Guaranteed
Engineered for reliable control-valve positioning, the Fisher 657 (Size 87, 0.2 to 1.0 bar (3 to 15 psig)) applies air pressure to the upper diaphragm casing to drive the stem downward against the spring. It provides fail-open action on push-down-to-close valves and fail-closed action on push-down-to-open valves, with 76 mm travel and 1419 cm2 diaphragm area.
Key Features
- Temperature range -40 to 82 C standard, to 149 C with silicone diaphragm
- Maximum allowable thrust 39142 N
- Effective diaphragm area 1419 cm2, 76 mm travel
- Direct-acting, spring-opposed design for fail-safe positioning
- Molded diaphragm, deep casing for excellent linearity
- Top- and side-mounted handwheels available
Genuine Parts, Fast Delivery, Full Support
Every 657 actuator is factory-certified, 100% genuine, and covered by a 1-year warranty with after-sales technical support. Ready stock ships within 48 hours worldwide. Bulk pricing available — contact us for a quote within 12 hours.
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Email: sales@gt-exim.com | WhatsApp: +86 17719526488
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