Proportional relief valve – DN 32-200
This proportional relief valve for heating and cooling systems maintains a minimum flow through the main pipe, minimising the response times of the system's control loops. Its ability to open at times of increasing differential pressure ensures the pumps are protected. Rust protection is assured thanks to the electrophoretically painted ductile iron body.
Key features
Special internal geometry
Allows big pressure drop without noise.
Adjustable set-point
Ensure the desired differential pressure.
Technical description
Application:
Heating and cooling systems.
Function:
Maintaining minimum flow through the main pipe to minimize response times of control loops in the system.
Opens at increasing Δp.
Dimensions:
DN 32-200
Pressure class:
Class 150
Max. differential pressure (ΔpV):
1600 kPa = 16 bar
Setting range:
Differential pressure adjustable 10 - 60 kPa, 50 - 150 kPa and 130 - 250 kPa.
Temperature:
Max. working temperature: 150°C
Min. working temperature: -10°C
Media:
Water and neutral fluids, water-glycol mixtures.
Material:
Valve body: Ductile iron EN-GJS-400
Actuator body: Ductile iron EN-GJS-400
Diaphragm: EPDM
Valve seat: Stainless steel
Valve plug: Stainless steel with EPDM insert
Surface treatment:
Electrophoretic painting.
Marking:
TA, DN, PN and flow direction arrow.
Flanges:
According to ASME/ANSI B16.42 Class 150.
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