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.
Technical description
Application:
Heating and cooling systems with variable flow.
Function:
Inline pressure relief valve with pneumatic spring.
Opens at increasing inlet pressure.
Dimensions:
DN 15-125
Pressure class:
PN 25 or PN 16 (DN 100-125)
Max. differential pressure (ΔpV):
1 600 kPa = 16 bar
Setting range:
0-16 bar
Temperature:
Max. working temperature: 100°C
Min. working temperature: -10°C
Media:
Water and neutral fluids, water-glycol mixtures.
Material:
Valve body: Ductile iron EN-GJS-400
Diaphragms and gaskets: NBR, EPDM
Surface treatment:
Electrophoretic painting.
Marking:
TA, DN, PN, Kvs, material and flow direction arrow.
Flanges:
DN 15-50 (optional): According to EN-1092-2:1997, type 16.
DN 65-125: According to EN-1092-2:1997, type 21.