Fisher 657 Diaphragm Actuator Size 30 0.2 to 1.0 bar (3 to 15 psig)
Buy Fisher 657 diaphragm actuator (Size 30, 0.2 to 1.0 bar (3 to 15 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 30 unit with a 0.2 to 1.0 bar (3 to 15 psig) spring range provides 19 mm of travel, a 297 cm2 effective diaphragm area, and up to 10231 N of maximum allowable thrust for dependable throttling or on-off control.
Key Features
- Top- and side-mounted handwheels available
- Rugged thick-walled cast iron and steel construction
- SIL3 capable, certified by exida
- Molded diaphragm, deep casing for excellent linearity
- Maximum allowable thrust 10231 N
- Temperature range -40 to 82 C standard, to 149 C with silicone diaphragm
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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