Differential pressure controller with adjustable set-point
These compact differential pressure controllers for heating and cooling systems are particularly effective in situations requiring high temperatures and/or pressure drop. They can be used both on the primary and secondary side in district heating and comfort cooling systems. Rust protection is assured thanks to the electrophoretically painted ductile iron body.
Heating and cooling systems with variable flow.
DA 516: Installation in return pipe.
DAF 516: Installation in supply pipe.
Differential pressure control over the load.
DN 100-150: PN 16 and PN 25
Max. differential pressure (ΔpV):
1600 kPa = 16 bar
Δp over the load is adjustable within:
DN 15-125: 5-30 kPa, 10-60 kPa, 10-100 kPa or 60-150 kPa.
DN 150: 5-30 kPa, 10-60 kPa, 10-100 kPa, 60-150 kPa or 100-400 kPa.
DN 15-50: Maximum value (30, 60, 100 resp. 150 kPa).
DN 65-125: Midway min./max. value (~18, ~35, ~55, resp. ~105 kPa).
DN 150: Minimum value (5, 10, 10, 60 resp. 100 kPa).
Max. working temperature:
- with measuring points: 120°C
- without measuring points: 150°C
Min. working temperature: -10°C
Water and neutral fluids, water-glycol mixtures.
Valve body: Ductile iron EN-GJS-400
Diaphragms and gaskets: EPDM
Adjustment ring: DN 15-50 Ryton PPS, DN 65-125 R St 37-2 steel. (DN 150 has no adjustment ring)
TA, DN, PN, Material, Kvs, Δp and flow direction arrow.
DN 15-50: According to ISO 228.
DN 15-50: According to EN-1092-2:1997, type 16.
DN 65-150: According to EN-1092-2:1997, type 21.
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