WebFisher 657 and 667 actuators are designed to provide dependable on/off or throttling operation of control valves. These spring-opposed diaphragm actuators position the valve plug in the valve in response to varying controller or valve positioner pneumatic output signals. The 657 actuator is direct-acting, while the 667 is reverse-acting.
FIELDVUE DVC5000 Series Digital Valve Controller - The …
Webwww.Fisher.com Fisher™ Obsolete and Inactive Products Including Valves, Actuators, Accessories, Instruments, and Regulators Obsolete products may not be manufactured … WebThese actuators are designed to provide dependable on-off or throttling operation of automatic control valves. Features n Application Versatility—Five actuator types in eleven sizes are available for an extensive variety of applications. diabetes rates around the world
Fisher® Spring & Diaphragm Actuators – Flow Control …
Webwww.Fisher.com Fisher™ Obsolete ... Valves, Actuators, Accessories, and Instruments OBSOLETE RECOMMENDED OBSOLETE RECOMMENDED PRODUCT REPLACEMENT PRODUCT REPLACEMENT 7 Series Auma ... 475 sizes 60 through 130 (obsolete 12/00) 585C 477 None 478 (obsolete 9/01) 1061 490, 491, 495 (obsolete 12/00) 685 WebNov 20, 2014 · The Fisher A41 valve (figure 1) features an eccentrically mounted disc with a soft or stainless steel seal ring. Soft seals provide excellent sealing capabilities in both flow directions. The metal seal ring provides excellent shutoff against pressure applied in the recommended flow direction for both liquid and gas applications. The NOVEX and WebFisher 667 actuator in sizes 30 through 76 and size 87. The 667-4 actuator in sizes 70 and 87 is also covered. Refer to separate instruction manuals for information about the valve positioner and other accessories used with these actuators. diabetes rate in france