Caleffi 519502A is an adjustable differential pressure bypass valve designed for hydronic heating and cooling systems with fixed-speed circulating pumps and zone valves. It maintains optimal pump operating pressure by bypassing excess differential pressure as zone valves close, eliminating water hammer noise. Rated for flow up to 9 GPM with 3/4" NPT male union connections, 150 psi maximum working pressure, and operating temperature range of 32–230°F. Brass body with graduated scale adjustment (1–6 m w.g. / 2–10 psi setting range).
Caleffi 519502A Differential Bypass Valve 3/4" NPT 9 GPM
Caleffi
$126.95
In Stock
- Replaces
- 01007/14 NA
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Caleffi
Caleffi 519502A Differential Bypass Valve 3/4" NPT 9 GPM
- SKU:
- 519502A
- Product Type:
- Differential Pressure Bypass Valve
- Subcategory:
- Hydronic System Control
- Application:
- Residential/Commercial
- System Type:
- Boiler, Hydronic Heating, Radiant System
- Installation Type:
- OEM Replacement
- Temperature Range:
- 32–230°F (0–110°C)
- Pressure Rating:
- 150 psi (10 bar)
- Inlet Size:
- 3/4" MNPT union
- Connection Type:
- NPT, Union
- Connection / Joint:
- NPT, Union
- Material:
- Brass body, brass valve plug, EPDM gasket and O-ring seals, asbestos-free NBR union seals, ABS control knob, stainless steel spring
- Control Type:
- Non-Programmable
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