Description
The Hansen HSCK125C is a 1-1/4" (32 mm) port socket weld combination stop/check valve with a seal cap. It combines a manual shut-off valve and a normally spring-closed check valve in one angle body, opening for flow in the arrow direction and reseating promptly when flow reverses.
Key specifications
- Catalog number: HSCK125C
- Size: 1-1/4" (32 mm), socket weld; connections match Schedule 80 pipe
- Flow coefficient (angle): Cv 30
- Body: forged steel, ASTM A105; bonnet: ductile iron, ASTM A536
- Disc: ductile iron with Teflon seat; stainless steel spring
- Seal cap: glass-filled polymer; a green seal cap and bonnet groove identify the valve as a stop/check
- Opening pressure drop: about 1 psi (0.07 bar)
- Safe working pressure: 400 psig (28 bar g) standard; 600 psig (41 bar g) on request
- Operating temperature: -60°F to 240°F (-51°C to 115°C)
- Refrigerants: R717 (ammonia), R22, R134a, R507a, R404a, R744 (CO2) and other Hansen-approved refrigerants
Common questions
Why use a stop/check valve instead of separate valves?
Hansen notes the combination valve reduces pressure drop, space and the number of welded joints, and avoids trapping liquid between a separate check valve and stop valve.
Which service kits fit this valve?
Hansen lists gasket kit 50-1153, bonnet assembly kit 50-1141, seat disk assembly kit 50-1147 and seal cap kit 50-1036 for the 1-1/4" HSCK. Hansen notes that parts for the older "SCK" stop/check valves (before 2003) are not interchangeable.
Specifications are based on Hansen Technologies Bulletin C519e (Combination Stop/Check Valves, Jan 2013). Confirm fit, ratings and application requirements before ordering.
Disclaimer: The image shown is a general representation of the product category and may not depict the exact part number offered. Actual product appearance, specifications, and configuration may vary.
