Pressure relief valve
A pressure relief valve for use in variable flow heating and cooling systems, the PM 512 features a soft NBR diaphragm that delivers a long lifetime and is also equipped with an auxiliary spring that operates as a fail-safe open function. Designed for easy handling in tight spaces. Electrophoretically painted ductile iron body for optimum rust protection.
Heating and cooling systems with variable flow.
Inline pressure relief valve with pneumatic spring.
Opens at increasing inlet pressure.
PN 25 or PN 16 (DN 100-125)
Max. differential pressure (ΔpV):
1 600 kPa = 16 bar
Max. working temperature: 100°C
Min. working temperature: -10°C
Water and neutral fluids, water-glycol mixtures.
Valve body: Ductile iron EN-GJS-400
Diaphragms and gaskets: NBR, EPDM
TA, DN, PN, Kvs, material and flow direction arrow.
DN 15-50 (optional): According to EN-1092-2:1997, type 16.
DN 65-125: According to EN-1092-2:1997, type 21.