658 15T17411711T1 25171507

Diaphragm valve, pneumatic

Item number: 88490747
Description
Type 658 Diaphragm valve, pneumatically operated, stainless steel two stage actuator
DN 15 DN 15
Body configuration T T body
Connection type 17 Spigot EN 10357 series A (formerly DIN 11850 series 2) / DIN 11866 series A
Valve body material 41 1.4435 (316L), block material
Diaphragm material 17 EPDM
Control function 1 Normally closed (NC)
Actuator version 1T1 Operator size 1T1
DN -2 25 DN 25
Connection type spigot 2 17 Spigot EN 10357 series A (formerly DIN 11850 series 2) / DIN 11866 series A
Execution type 1507 Ra ≤ 0.6 µm (25 µin.) for media wetted surfaces, mechanically polished internal
Surface 1507 Ra ≤ 0.6 µm (25 µin.) for media wetted surfaces, mechanically polished internal
Diaphragm size 10 Diaphragm size 10
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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 (M8x1) for OPEN and CLOSED position feedback possible (MG 25 – 50)