A membrane valve is a control valve that has some special features thanks to the internal membrane. For example, it is suitable for highly viscous media or aggressive chemical applications. The medium only comes into contact with the membrane and the valve body, all the mechanical parts are beneath the membrane and thus are protected from the medium. This is a valve type with low dead space, which is easy to clean and does not allow deposits, thereby preventing cross-contamination. The valves of series MB01 are available with casing material or either PP, PVC-U or PVDF. The valves of series MB02 are made from high quality stainless steel. Thanks to these materials, the valves can also be used in chemically aggressive applications, e.g. in the pharmaceuticals industry, hygiene and sterile technology, or the chemicals industry. The valves can be also be used in biotechnology, the drinks industry and the food sector, however, as well as in sludge, powder or paint processing. The valves can be made either with an internal thread, with adhesive/weld sleeve, adhesive/weld end nozzles, DIN or ANSI flanges.
diaphragm valve PVC-U d25 cementing spigots EPDM-membrane handwheel made of PP-GR pressure: PN10 KVs-value: 15.66 m3/h suitable for liquid and gaseous media
diaphragm valve PVC-U d32 cementing spigots EPDM-membrane handwheel made of PP-GR pressure: PN10 KVs-value: 26.7 m3/h suitable for liquid and gaseous media
diaphragm valve PP-H d25 welding sleeve EPDM-membrane handwheel made of PP-GR pressure: PN10 KVs value: 15.66 m3/h optimised fluid dynamic design
diaphragm valve PP-H DN20 flange PN10 / PN16 EPDM-membrane handwheel made of PP-GR pressure: PN10 KVs value: 15.66 m3/h optimised fluid dynamic design
stainless steel 1.4435 diaphragm valve 1 Inch female thread BSP diaphragm PTFE/EPDM one-piece handwheel made of PP-GR pressure: PN10 KVs-value: 14 m3/h eliminates water hammer
diaphragm valve PVC-U DN20 flange EPDM-membrane handwheel made of PP-GR pressure: PN10 KVs-value: 15.66 m3/h suitable for liquid and gaseous media
diaphragm valve PVC-U 1/2 Inch female thread EPDM-membrane handwheel made of PP-GR pressure: PN10 KVs-value: 6.72 m3/h suitable for liquid and gaseous media
diaphragm valve PVC-U d50 adhesive connection EPDM-membrane handwheel made of PP-GR pressure: PN10 KVs-value: 65.22 m3/h suitable for liquid and gaseous media
Thanks to the hand wheel and the moveable membrane made from EPDM, FKM or PTFE, the valve can be set at up to 300 different opening degrees, even during running operation. The hand wheel is not ascending and after being set can be locked with a padlock, the valve can also be locked and secured against manipulation. There is an optical position display in the centre of the hand wheel controls, which shows the degree of opening. The casing and the hand wheel are completely watertight and protect the integrated metal parts from external influences. There is a holder for the fastenings on the bottom of the valve. The inside of the valve is manufactured in a flow-optimising design, allowing high flow rates.
The membrane valve has quite a simple design. Inside the casing is a sealing web, which is fitted at 90° to the valve opening, this protrudes slightly and thus the membrane, which is above it, pushes against it slightly. If the hand wheel is used when the valve is fully open, a translation from the hand wheel pushes against the membrane and moves it to the sealing web until it is completely closed.
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