Directly controlled by the operating fluid the DMV 755 - 765 reduces the primary pressure and keeps the operating pressure constant.
The DMV 755 - 765 is in working condition always open which means it is balanced between primary and secondary pressure.
At any rise of working pressure - valve outlet - a pressure compensation takes place at the area below the diaphragm (control bore).
the higher working pressure activates the large diaphragm and lifts the piston against the spring force.
The flow reduce and the working pressure drops down until balanced condition is reached again. When the working pressure drops the described procedure reverses. The spring force opens the valve seat against the lower pressure force below the diaphragm. The flow rise until the balanced condition is reached again.

Valve body : PVC-PPH-PVDF
Diaphragm : EPDM coated PTFE
Seals : FPM-EPDM (FPM on request)

Connection :
DMV 755 - DN 10 up to DN 50
DMV 765 - DN 10 up to DN 50
Union tread acc.DIN 8063

Opening pressure : 10 bars max (20°C)

Closing pressure:
DMV 755 - 1,0 up to 9 bars (20°C)
DMV 765 - 0,5 up to 9 bars (20°C)

Hysteresis: Approx. 0,1 up to 0,4 bar

Temperature :
PVC: - 20 ... + 50° C
PPH: +10 ... + 70° C
PVDF: - 40 ... + 100° C.