GEMÜ 658

The GEMÜ 658 2/2-way diaphragm valve has a two-stage actuator. In addition to full stroke, a partial stroke can be set via two pistons working independently of each other.All actuator parts including closing springs (except seals) are made from stainless steel. The valve is available with a Normally Closed control function. An opening stroke limiter for setting the partial stroke is integrated as standard.

• An adjusting screw in the actuator enables the setting of the opening and closing function and also the setting of a partial stroke (for reduced flow)
• Both fast on/off operation and precision dosing of the working medium possible
• Suitable for inert, corrosive, liquid and gaseous media
• CIP/SIP capable
• Compact design (ideal when space is at a premium)
• Version according to ATEX on request
• Mounting of proximity switches for OPEN and CLOSED position feedback possible (MG 25 – 50)

• Media temperature :-10 to 100 °C
• Sterilization temperature:Max. 150 °C
• Ambient temperature:0 to 60 °C
• Operating pressure :0 to 10 bar
• Nominal sizes:DN 10 to 65
• Body configurations:2/2-way body | i-body | Multi-port body | T body | Tank valve body | Welding configuration
• Connection types:Clamp | Flange | Spigot | Threaded connection
• Connection standards:ANSI | ASME | BS | DIN | EN | ISO | JIS | SMS
• Body materials:1.4408, investment casting material | 1.4435 (316L), forged material | 1.4435 (BN2), forged material | 1.4435, investment casting material | 1.4539 (904L), forged material
• Diaphragm materials:EPDM | FKM | PTFE/EPDM
• Conformities:3A | BSE/TSE | CRN | EAC | EHEDG | FDA | Oxygen | Reg. (EU) No. 10/2011 | Regulation (EC) No. 1935/2004 | Regulation (EC) No. 2023/2006 | TA Luft (German Clean Air Act) | USP