GEMÜ metal industrial diaphragm valves

For industrial applications

Areas of application and industrial sectors

Depending on the version, GEMÜ diaphragm valves are particularly suitable for use with both inert and corrosive media. They can be used to control and/or regulate heavily contaminated liquid and gaseous media or media containing tiny particles. The major areas of use are processes in the widest range of general industrial applications. The valves can also be equipped with numerous accessories, such as seal adjusters and stroke limiters, manual overrides, proximity switches, optical position indicators, electrical position indicators, combi switchboxes, pilot valves, as well as positioners and process controllers.

GEMÜ 615
615
Clamp; Spigot; Threaded connection
Pneumatic
1.4435 (316L), forged material; 1.4435, investment casting material; CW617N, brass
6 bar
80 ° C
-10 ° C
DN 10 (3/8''); DN 15 (1/2''); DN 20 (3/4'')
max. 150 °C
GEMÜ 620
620
Flange; Threaded connection
Pneumatic
EN-GJL-250, cast iron material; EN-GJS-400-18-LT, SG iron material; EN-GJS-500-7, ductile iron material
10 bar
100 ° C
DN 15 (1/2''); DN 20 (3/4''); DN 25 (1''); DN 32 (1 1/4''); DN 40 (1 1/2''); DN 50 (2''); DN 65 (2 1/2''); DN 80 (3''); DN 100 (4''); DN 125 (5''); DN 150 (6'')
GEMÜ 655
655
Flange
Manual
EN-GJL-250, cast iron material; EN-GJS-400-18-LT, SG iron material; EN-GJS-500-7, ductile iron material
7 bar
100 ° C
DN 25 (1''); DN 40 (1 1/2''); DN 50 (2''); DN 65 (2 1/2''); DN 80 (3''); DN 100 (4''); DN 125 (5''); DN 150 (6''); DN 200; DN 250; DN 300
nicht sterilisierbar
GEMÜ 656
656
Flange
Pneumatic
EN-GJL-250, cast iron material; EN-GJS-400-18-LT, SG iron material; EN-GJS-500-7, ductile iron material
7 bar
100 ° C
DN 25 (1''); DN 40 (1 1/2''); DN 50 (2''); DN 65 (2 1/2''); DN 80 (3''); DN 100 (4''); DN 125 (5''); DN 150 (6''); DN 200; DN 250
GEMÜ 671
671
Clamp; Flange; Spigot; Threaded connection
Manual
1.4408, investment casting material; 1.4408, investment casting material, PFA lined; 1.4435 (316L), forged material; 1.4435, investment casting material; EN-GJL-250; EN-GJS-400-18-LT (GGG 40.3), PFA lined; EN-GJS-400-18-LT (GGG 40.3), PP lined
10 bar
80 ° C
-10 ° C
DN 15 (1/2''); DN 20 (3/4''); DN 25 (1''); DN 32 (1 1/4''); DN 40 (1 1/2''); DN 50 (2''); DN 65 (2 1/2''); DN 80 (3''); DN 100 (4'')
GEMÜ 675
675
Flange; Threaded connection
Manual
EN-GJL-250, cast iron material; EN-GJS-400-18-LT, SG iron material; EN-GJS-500-7, ductile iron material
10 bar
100 ° C
-10 ° C
DN 15 (1/2''); DN 20 (3/4''); DN 25 (1''); DN 32 (1 1/4''); DN 40 (1 1/2''); DN 50 (2''); DN 65 (2 1/2''); DN 80 (3''); DN 100 (4''); DN 125 (5''); DN 150 (6'')
nicht sterilisierbar
GEMÜ 687
687
Clamp; Flange; Spigot; Threaded connection
Pneumatic
1.4408, investment casting material; 1.4408, investment casting material, PFA lined; 1.4435 (316L), forged material; 1.4435, investment casting material; EN-GJS-400-18-LT (GGG 40.3), PFA lined; EN-GJS-400-18-LT (GGG 40.3), PP lined; EN-GJS-400-18-LT, hard rubber lined
10 bar
100 ° C
-10 ° C
DN 10 (3/8''); DN 12; DN 15 (1/2''); DN 20 (3/4''); DN 25 (1''); DN 32 (1 1/4''); DN 40 (1 1/2''); DN 50 (2''); DN 65 (2 1/2''); DN 80 (3''); DN 100 (4'')
max. 150 °C
GEMÜ 695
695
Clamp; Flange; Spigot; Threaded connection
Pneumatic
1.4408, investment casting material; 1.4408, investment casting material, PFA lined; 1.4435 (316L), forged material; 1.4435, investment casting material; EN-GJL-250; EN-GJS-400-18-LT (GGG 40.3), PFA lined; EN-GJS-400-18-LT (GGG 40.3), PP lined; EN-GJS-400-18-LT, hard rubber lined
10 bar
80 ° C
-10 ° C
DN 15 (1/2''); DN 20 (3/4''); DN 25 (1''); DN 32 (1 1/4''); DN 40 (1 1/2''); DN 50 (2'')

Application example: Bor-dekontaminering

Boron Decontamination
According to the World Health Organisation a boron content of >0.5 mg/l in drinking water is harmful. In addition, it has been shown that too high a boron content in water used for the irrigation of plants can also be harmful to humans and animals when these are eaten. Boron
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