Bonnets with piston actuator : SISTO-C

Accessories for valves and solenoid valve

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Presentation

SISTO-C Bonnets with piston actuator MD 168-202 Features ● Piston actuator ● Stainless steel actuator housing ● Stainless steel bonnet ● Stainless steel stem ● Clear visual position indication by red plastic indicator – well visible all around ● Stainless steel compressor ● Floating nut ● Spring chamber venting by operation hole ● Spring to close – air to open ● Stainless steel spiral spring support Variants ● Spring to open – air to Close ● Air to open – air to Close ● Aluminium hard anodised actuator housing ● High temperature design with FKM/FPM seal (Recommendation: >= 80 °C measured at actuator housing) Options ● Limit switches ● Positioner ● Adjustable travel stop

Technical features

Pressure class: 5,5 - 7 barg Body material: Stainless steel / special alloy forged - 1.4435; Aluminium Diaphragm size: MD 168-202 Operating temperature: >= 80°C Diaphragm: EPDM; TFM/EPDM bonded; TFM/EPDM 2 layers connection: weld ends; clamp; customized Drive: manual; pneumatic Sealing system: enclosed, spiral supported diaphragm Surface: Ra=0,25 - 0,8; Elektropolished; mechanical polishing Approval: FDA; USP; EU1935; TA-Luft

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