Corporate CommunicationEva ZinkTel.: +49 (0) 7940 123-708Fax.: -49 (0) 7940 123-487eva.zink@gemue.de

PRESS RELEASE

5th May 2014

Resistant, versatile, robust:Lined GEMÜ diaphragm valves

Lined diaphragm valves from GEMÜ are very versatile as they can withstand both corrosive media and high temperatures. They are used, for example, in water treatment, the chemical industry, the paper industry and in mining. In many cases, a valve with a full metal body cannot be used, since the corrosive medium attacks and

can even destroy the material. A purely plastic body is often also unsuitable, since the temperatures

can be higher than the material allows.

GEMÜ has the right solution with its lined metal valve bodies, which meet even the strictest

requirements in conjunction with the appropriate diaphragm material and thereby ensure a high

degree of operational reliability.

A basic distinction is made between full bore diaphragm valves and weir-type diaphragm valves.

Full bore diaphragm valves:Their virtually full bore gives them an advantage over other

conventional shut-off valves, particularly when working with viscous

liquids such as slurry and liquids with a high solid or fibre content. A

metal valve body with hard rubber lining can be used when

processing abrasive media such as surface water with sand content

or milk of lime for water treatment. The entire medium wetted part is

therefore protected by the lining, which prevents micro-pitting

(hydroabrasion).

GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG • Fritz-Müller-Str. 6-8 • 74653 Ingelfingen • Germany Page 1 von 2Tel.: -49 (0) 7940 123-0 • Fax: -49 (0) 7940 123-192www.gemu-group.com

Limited partnership: Head office: 74653 Ingelfingen Stuttgart Court of Registry HRA 590394; Limited partner: Gebr. Müller GmbH Head office: 74653 Ingelfingen Stuttgart Court of Registry HRB 590215Managing Directors: Fritz Müller, Gert Müller, Stephan MüllerVAT number: DE 146281082, Tax number: 76050/04341

GEMÜ 655

Weir-type diaphragm valves: These can be used in around 90% of all industrial applications.

Depending on the application in question, valves with purely metal

bodies are often not suitable for a particular task as they can quickly

reach their limits, particularly when processing corrosive media. In

these cases, metal bodies, e.g. made of SG iron or investment cast

stainless steel, are lined with materials such as PFA, PP or hard

rubber. Typical application examples include e.g. shutting off media

such as sulphuric acid, chlorine or sodium hydroxide.

GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG • Fritz-Müller-Str. 6-8 • 74653 Ingelfingen • Germany Page 2 von 2Tel.: -49 (0) 7940 123-0 • Fax: -49 (0) 7940 123-192www.gemu-group.com

Limited partnership: Head office: 74653 Ingelfingen Stuttgart Court of Registry HRA 590394; Limited partner: Gebr. Müller GmbH Head office: 74653 Ingelfingen Stuttgart Court of Registry HRB 590215Managing Directors: Fritz Müller, Gert Müller, Stephan MüllerVAT number: DE 146281082, Tax number: 76050/04341

GEMÜ 620