H5600R/400-P - Hansen - NH3 Pressure Relief Valve 1/2 x 3/4

The Hansen H5600R/400-P is a reduced-capacity ammonia (NH₃) pressure relief valve, factory-set to open at 400 PSIG, and designed for industrial refrigeration systems. It includes Hansen’s POP-EYE™ self-alarming indicator and ACT® (Anti-Corrosion Technology) coating.

🔧 Key Specifications

• Model: H5600R/400-P
• Type: Reduced Capacity Pressure Relief Valve
• Set Pressure: 400 PSIG
• Inlet/Outlet: 1/2" FPT × 3/4" 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: Approx. 5 lbs
• Dimensions: 4" W × 4" H × 9" 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