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Construction

The GEMU 620 pneumatically operated 2/2-way diaphragm valve has a low maintenance membrane actuator which can be controlled by inert gaseous media.

Features
  • Suitable for inert and corrosive liquid and gaseous media
  • Insensitive to particulate media
  • Valve body and diaphragm available in various materials and designs
Advantages
  • Optional flow direction, will seal in either flow direction up to full operating pressure
  • Good flow capability
  • Accessories:
    • Stroke limiter
    • Optical position indicator
    • Manual override
    • Pilot valve with manual operation
    • Electrical position indicator
    • Pneumatic or electro-pneumatic positioners
Unit of Measure

Specifications

Type Type 620 manual, Cast Iron Actuator with SS Distance Piece
Nominal Size 10" 12" 2 1/2" 3" 4" 6" 8"
Connection 125# Flat Face Flange 150# Flat Face Flange 150# Raised Face Flange Serated 150# Raised Face Flange Smooth Flanged ANSI class 125/150 RF, length EN 558-2, Series 1 ISO 5752, Basic Series 1
Valve Body Material 316 Stainless Steel with PFA Lined Body Cast Iron - ASTM A-126 Class B Body Ductile Iron with Butyl Lined Body Ductile Iron with Hard Rubber Lined Body Ductile Iron with Hypalon Lined Body Ductile Iron with Neoprene Lined Body Ductile Iron with PFA Lined Body Ductile Iron with Polypropylene Lined Body Ductile Iron with PVDF Lined Body Ductile Iron with Silica Free Soft Rubber Lined Body Ductile Iron with Tefzel Lined Body Investment Cast 316 Stainless Steel Body
Diaphragm Material Buna-N Diaphragm Butyl Diaphragm EPDM Diaphragm Hypalon Diaphragm Natural Rubber Silica Free Diaphragm Neoprene Diaphragm PTFE/EPDM Diaphragm PTFE/VitonDiaphragm TFM/EPDM Diaphragm Viton Diaphragm
Control Function Pneumatic Air to Air Pneumatic Normally Closed Pneumatic Normally Open
Actuator Size 3A2 3A3 3AD 3AF 4A1 4A2 4AD 4AF 5A2 7A3 7A4 7A5 7AD 7AF
Max. Ambient Temperature 60 ºC

Working Medium

Working Medium Corrosive, inert, gaseous and liquid media which have no negative impact on the physical and chemical properties of the body and diaphragm material.
Max. Perm. Temperature of Working Medium 150 ºC

Control Medium

Control Medium Inert Gases
Max. Perm. Temperature of Control Medium 40 ºC

View items

Item #

Nominal Size

Connection

Diaphragm Material

Control Function

Actuator Size

620065D3818-113A2 N/A 2 1/2" N/A 150# Raised Face Flange Smooth N/A Hypalon Diaphragm N/A Pneumatic Normally Closed N/A 3A2
620065D38181413A2 N/A 2 1/2" N/A 150# Raised Face Flange Smooth N/A EPDM Diaphragm N/A Pneumatic Normally Closed N/A 3A2
620065D3818-213A2 N/A 2 1/2" N/A 150# Raised Face Flange Smooth N/A Buna-N Diaphragm N/A Pneumatic Normally Closed N/A 3A2
620065D38182513A2 N/A 2 1/2" N/A 150# Raised Face Flange Smooth N/A Natural Rubber Silica Free Diaphragm N/A Pneumatic Normally Closed N/A 3A2
620065D3818-413A2 N/A 2 1/2" N/A 150# Raised Face Flange Smooth N/A Viton Diaphragm N/A Pneumatic Normally Closed N/A 3A2
620065D3818-413A2 N/A 2 1/2" N/A 150# Raised Face Flange Smooth N/A Viton Diaphragm N/A Pneumatic Normally Closed N/A 3A2
620065D3818-513A2 N/A 2 1/2" N/A 150# Raised Face Flange Smooth N/A PTFE/EPDM Diaphragm N/A Pneumatic Normally Closed N/A 3A2
620065D38185213A2 N/A 2 1/2" N/A 150# Raised Face Flange Smooth N/A PTFE/EPDM Diaphragm N/A Pneumatic Normally Closed N/A 3A2
620065D3818-613A2 N/A 2 1/2" N/A 150# Raised Face Flange Smooth N/A Butyl Diaphragm N/A Pneumatic Normally Closed N/A 3A2
620065D3818-813A2 N/A 2 1/2" N/A 150# Raised Face Flange Smooth N/A Neoprene Diaphragm N/A Pneumatic Normally Closed N/A 3A2
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