5701AX-870 - Henry - 1/2 NPTF-3/4 NPTF - 870 - Brass Angle Type suitable for Transcritical CO2

The Henry 5701AX-870 is a high-pressure brass angle-type pressure relief valve designed specifically for transcritical CO₂ (R744) systems. Here's a detailed breakdown of its specifications and features:

🔧 Key Specifications:

• Part Number: 5701AX-870
• Material: Brass
• Inlet Connection: 1/2" NPTF
• Outlet Connection: 3/4" NPTF
• Flow Area: 39.59 mm²
• Weight: 0.82 kg
• Design: Angle type
• Maximum Pressure Setting: 130 bar (1885 psi)
• Operating Temperature Range: -40°C to +120°C
• Seal Material: Fluoroelastomer soft seat for excellent sealing
• Certifications: CE Cat IV, EN ISO 4126-1, ASME-UV, UKCA 
  1
   
  2

✅ Features:

• Specifically engineered for transcritical CO₂ applications
• High flow capacity for rapid pressure relief
• Tamper-proof and blow-out proof design
• Reseats within 15% of set pressure after discharge
• Compatible with CO₂, HFC, HCFC, HFO, and R290 refrigerants (where material compatibility allows)