DAF 516 – NPT threads/ANSI flanges
Differential pressure controller with adjustable set-point – for installation in the supply pipe
This compact differential pressure controller for heating and cooling systems is particularly effective in situations requiring high temperatures and/or pressure drop. DAF 516 can be used both on the primary and secondary side in district heating and comfort cooling systems. Rust protection is assured thanks to the electrophoretic painted ductile iron body.
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Features and Benefits
Inline design
Inline flow allows high pressure drops without noise.
Adjustable set-point
Delivers desired differential pressure ensuring accurate balancing.
Applications
Heating and cooling systems.
Installation in supply pipe.
Functions
Differential pressure control
Pre-setting Δp over the load (ΔpL)
Differential pressure (ΔpV)
Max. differential pressure (ΔpV): 230 psi
Setting range
Delivery setting: Maximum value (4.35, 8.7, 14.5, 22 psi).
Size 2 1/2"-5": Midway min./max. value (~2.61, ~1.02, ~1.45, ~15.2 psi).
Δp over the load is adjustable within: 0.73-4.35 psi, 1.45-8.7 psi, 1.45-14.5 psi, 8.7-22 psi.
Temperature
Max. working temperature: 302°F
Min. working temperature: 14°F
Media
Water or neutral fluids, water-glycol mixtures (0-57%).
Marking
IMI TA, Size, PN, Material, Cvs, Δp and flow direction arrow.
Connection
Size 1/2" - 2": External threads according to ISO 228. (Separate connections with NPT threads available.)
Size 2 1/2" - 5": Flanges according to ASME/ANSI B16.42 Class 150.
Material
Valve body: Ductile iron EN-GJS-400-15
Diaphragms and gaskets: EPDM
Adjustment ring: Size 1/2"-2" Ryton PPS, size 2 1/2"-5" R St 37-2 steel.
Surface treatment
Electrophoretic painting.
The table below assists you in finding the relevant product based on its variant. For more details, please download the datasheet above.
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