H5600A/350-P - Hansen - NH3 Pressure Relief Valve 1/2 x 3/4, Set@350 PSIG, POP-EYE

The Hansen H5600A/350-P is a pressure relief valve designed for ammonia (NH₃) refrigeration systems, featuring the POP-EYE™ self-alarming indicator and factory-set to open at 350 PSIG.

🔧 Key Specifications

• Model: H5600A/350-P
• Inlet/Outlet: 1/2" FPT × 3/4" FPT
• Set Pressure: 350 PSIG
• 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® (Anti-Corrosion Technology)
• Weight: ~4 lbs
• Dimensions: 4" W × 4" H × 7" D 

💡 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