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Pneumatic 2/2-way diaphragm valve made of metal

GEMÜ 658

ConfigureTechnical data sheet
Pneumatically operated stainless steel diaphragm valve with welded ends – ideal for the pharmaceutical, biotechnology, and food industries.

Valve with two-stage actuator made of stainless steel

Product information

The 2/2-way diaphragm valve GEMÜ 658 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. It is available with a “Normally Closed” control function. An opening stroke limiter for setting the part stroke is integrated as standard.

Key features

  • In addition to the normal opening and closing function, a partial stroke (reduced volume flow) can be set using the opening stroke limiter
  • Both fast Open/Close function and precision dosing of the working medium possible
  • Mounting of proximity switches (M8x1) for Open and Closed position feedback possible (MG 25–50)
  • CIP/SIP capable
  • Compact design (ideal when space is at a premium)
  • Version according to ATEX on request
Pneumatically operated stainless steel diaphragm valve with welded ends – ideal for the pharmaceutical, biotechnology, and food industries.

Technical details

Parameters
Value
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 bodies
i-body
Multi-port bodies
T body
Tank valve body
Welding configuration
Connection types
Clamp
Flange
Spigot
Thread
Connection standards
ANSI
ASME
BS
DIN
EN
ISO
JIS
SMS
Body materials
1.4408, investment casting material
1.4435 (316L), block material
1.4435 (BN2), forged material
1.4435 (F316L), forging material
1.4435, investment casting material
1.4539 (904L), forged material
Diaphragm materials
EPDM
FKM
PTFE/EPDM
Conformities
3A
ATEX
Belgaqua
BSE/TSE
CRN
EAC
EHEDG
FDA
FMEDA
Oxygen
Regulation (EC) No. 1935/2004
Regulation (EC) No. 2023/2006
Regulation (EU) No. 10/2011
TA Luft (German Clean Air Act)
USP

Downloads

8 Results
  • Operating instructions GEMÜ 658

    pdf (5 MB) -
    EN

  • Product certificate EHEDG - GEMÜ diaphragm valve collection

    pdf (298 KB) -
    EN

  • Product certificate 3A - GEMÜ diaphragm valve collection

    pdf (209 KB) -
    EN

  • Declaration of Conformity - GEMÜ product collection

    pdf (104 KB) -
    EN

  • Functional safety FMEDA - GEMÜ 658, 660

    pdf (537 KB) -
    EN

  • Product certificate passivated - Electropolished GEMÜ valve body collection

    pdf (37 KB) -
    EN

  • Product brochure Pneumatically operated stainless steel diaphragm valve with two-stage actuator 658

    pdf (295 KB) -
    EN

  • Datasheet GEMÜ 658

    pdf (5 MB) -
    EN

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