Fisher 657 Diaphragm Actuator Size 70 0.4 to 2.0 bar (6 to 30 psig)
Buy Fisher 657 diaphragm actuator (Size 70, 0.4 to 2.0 bar (6 to 30 psig)). Fail-open/fail-closed pneumatic positioning for control valves. In stock, brand new, factory-direct price, ships within 48 hours.
★★★ Gold-Tier Fisher Supplier in China
- 100% Genuine & Brand New
- Global Fast Shipping via DHL/FedEx
- Fast Quotation within 12 Hours
- 1-Year Warranty Guaranteed
The Fisher 657 is a direct-acting, spring-opposed diaphragm actuator that positions a control valve plug in response to a varying pneumatic output signal. This Size 70 unit with a 0.4 to 2.0 bar (6 to 30 psig) spring range provides 76 mm of travel, a 1419 cm2 effective diaphragm area, and up to 39142 N of maximum allowable thrust for dependable throttling or on-off control.
Key Features
- Top- and side-mounted handwheels available
- Maximum allowable thrust 39142 N
- Molded diaphragm, deep casing for excellent linearity
- Rugged thick-walled cast iron and steel construction
- SIL3 capable, certified by exida
- Split-block stem connection for solid motion transfer
Factory-Direct Price & Fast Shipping
We supply Fisher 657 diaphragm actuators factory-direct with competitive bulk pricing. Large ready stock ships within 48 hours via DHL/FedEx worldwide, and every unit is 100% genuine and brand new with a 1-year warranty. Send your size and spring range for a quote within 12 hours.
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Email: sales@gt-exim.com | WhatsApp: +86 17719526488
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