H5601/300-P - Hansen - NH3 Pressure Relief Valve 1/2 x 1, Set@300 PSIG, POP-EYE

The Hansen H5601/300-P is a pressure relief valve designed for ammonia (NH₃) refrigeration systems, featuring a 1/2" FPT inlet and 1" FPT outlet, and factory-set to open at 300 PSIG. It includes Hansen’s POP-EYE™ self-alarming indicator and ACT® (Anti-Corrosion Technology) coating.

🔧 Key Specifications

• Model: H5601/300-P
• Set Pressure: 300 PSIG
• Inlet/Outlet: 1/2" FPT × 1" FPT
• Pressure Range: 150–400 PSIG (10.4–28 bar)
• Safe Working Pressure: 400 PSIG (28 bar)
• Seat Disc: Premium-grade virgin Teflon®
• Internal Components: Stainless steel insert, piston, and spring
• Seal: Neoprene O-ring
• Body Coating: ACT® for corrosion resistance
• Weight: ~5 lbs
• Dimensions: 4" W × 4" H × 8" L

💡 POP-EYE™ Indicator Features

• Bright LED with 360° visibility
• Blinks for 2+ weeks after valve lifts
• Battery life: 7+ years
• No wiring, setup, or calibration required
• Drop-in replacement for older H56XX models
• Not retrofittable to existing valves