This non adjustable valve , that limits the differential pressure between the central heating flow and the c. h. return, is supplied with a standard presetting calibration of 250 mbar.
Other values by request.
Materials: body in acetalic resin (POM), O-ring in EPDM rubber.

Casing and inner parts from Acetal (POM)

Spring in Stainless steel

Maximum Pressure 16 Bar

Noise and Waterhammer reducing construction