GS251H - Hansen - 2-1/2 NH3 Shut-off Valve Globe, Socket Weld, Handwheel

The Hansen GS251H is a 2-1/2" NH₃ (ammonia) globe-style shut-off valve with socket weld connections and a handwheel actuator, designed for industrial refrigeration systems.

🔧 Key Specifications

• Model: GS251H
• Valve Type: Globe shut-off valve
• Connection: Socket Weld (SW)
• Size: 2-1/2" (65 mm)
• Handle: Handwheel (zinc-plated iron alloy)
• Body Material: Cast steel (ASTM A-352, Grade LCB)
• Bonnet: Screwed style, ductile iron (ASTM A536)
• Stem: Polished stainless steel
• Seat Disc: Retained PTFE (Teflon)
• Stem Packing: Graphite composite + neoprene O-ring
• Seal Cap: Zinc-plated steel
• Operating Temperature:
  • Standard: -60°F to 240°F (-51°C to 115°C)
  • Optional: -20°F to 300°F (-29°C to 149°C)
• Safe Working Pressure:
  • Standard: 400 psig (28 bar g)
  • Optional: 600 psig (41 bar g)
• Weight: ~39 lbs
• Dimensions: Approx. 14" L × 9" W × 8" H

💡 Features

• Designed for ammonia (NH₃) and other approved refrigerants
• Superior sealing performance at seats, stems, and bonnets
• Easier and cleaner installation compared to flanged or butt weld valves
• Anti-spin seat disc design for high-velocity gas applications