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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 socket; Threaded spigot
Pneumatic
1.4435, forged body; 1.4435, investment casting; CW617N (brass)
6 bar
80 ° C
-10 ° C
DN 10 (3/8''); DN 15 (1/2''); DN 20 (3/4'')
GEMÜ 618
618
Clamp; Spigot; Threaded socket; Threaded spigot
Motorized
1.4435, forged body; 1.4435, investment casting; CW617N (brass)
6 bar
100 ° C
-10 ° C
DN 4; DN 6; DN 8 (1/4''); DN 10 (3/8''); DN 15 (1/2''); DN 20 (3/4'')
GEMÜ 620
620
Flange; Threaded socket
Pneumatic
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; EN-GJS-500-7, PFA lined; EN-GJS-500-7, PP lined
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 648
648
Spigot
Motorized
1.4408, PFA lined; 1.4408, investment casting; 1.4435, forged body; 1.4435, investment casting; ABS; 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; EN-GJS-500-7, PFA lined; EN-GJS-500-7, PP lined; PP; PP inliner / outliner; PVC; PVDF
10 bar
150 ° 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 655
655
Flange
Manual
EN-GJL-250; EN-GJL-250 (GG-25), hard rubber lined; EN-GJL-250, soft rubber lined
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
GEMÜ 656
656
Flange
Pneumatic
EN-GJL-250; EN-GJL-250 (GG-25), hard rubber lined; EN-GJL-250, soft rubber lined
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 socket; Threaded spigot
Manual
1.4408, PFA lined; 1.4408, investment casting; 1.4435, forged body; 1.4435, investment casting; 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 socket
Manual
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; EN-GJS-500-7, PFA lined; EN-GJS-500-7, PP lined
10 bar
150 ° 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 687
687
Clamp; Flange; Spigot; Threaded socket; Threaded spigot
Pneumatic
1.4408, PFA lined; 1.4408, investment casting; 1.4435, forged body; 1.4435, investment casting; 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'')

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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