Description
The Hansen GSB051C is a 1/2" (13 mm) socket weld globe shut-off valve with a seal cap for industrial refrigeration systems. It socket-welds directly to steel pipe, eliminating flanged or threaded joints, and uses Hansen's non-leak seal plus stem packing design to minimize stem leakage.
Service kits listed by Hansen for this size: gasket kit 50-1040, bonnet assembly kit 50-1094 and seal cap kit 50-1036.
Key specifications
- Catalog number: GSB051C (globe, socket weld, seal cap)
- Size: 1/2" (13 mm); socket connections match Schedule 80 pipe
- Flow coefficient (globe): Cv 4
- Body: forged steel, ASTM A105
- Bonnet: ductile iron, ASTM A-536 (bolted bonnet)
- Stem: polished stainless steel; seat disc: retained PTFE (Teflon); stainless steel ball bearings
- Stem packing: graphite composite plus neoprene O-ring in series
- Seal cap: glass-filled polymer, safety vented
- Safe working pressure: 400 psig (28 bar g) standard; 600 psig (41 bar g) available on request
- Operating temperature: -60°F to 240°F (-51°C to 115°C) standard
Common questions
What does the last letter of the catalog number mean?
In Hansen's ordering table, H indicates a handwheel and C indicates a seal cap. The GSB051C is the seal cap version and the GSB051H is the handwheel version; Hansen notes the handwheel and seal cap are interchangeable.
Which refrigerants is it suitable for?
Hansen lists the socket weld shut-off valve line for R717 (ammonia), R22, R134a, R507, R404a, R744 (CO2) and other Hansen-approved refrigerants.
Specifications are based on Hansen Technologies Bulletin G209i (Socket Weld Shut-Off Valves, Feb 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.
