5701AX-1890 - Henry - 1/2 NPTF-3/4 NPTF - 1890 - Brass Angle Type suitable for Transcritical CO2

The Henry 5701AX-1890 is a high-pressure brass angle-type pressure relief valve engineered for transcritical CO₂ (R744) systems, which operate at extremely high pressures. Here's a detailed overview of its specifications and features:

🔧 Key Specifications

• Part Number: 5701AX-1890
• Material: Brass
• Inlet Connection: 1/2" NPTF
• Outlet Connection: 3/4" NPTF
• Flow Area: 39.59 mm²
• Weight: 0.82 kg
• Design: Angle type
• Pressure Setting: 1890 psi (approx. 130 bar)
• Operating Temperature Range: -40°C to +120°C
• Seal Material: Fluoroelastomer soft seat

✅ Features

• Designed for transcritical CO₂ applications with pressure settings up to 130 bar
• High flow capacity for rapid and effective pressure relief
• Tamper-proof and blow-out proof design
• Reseats within 15% of set pressure after discharge
• Suitable for CO₂, HFC, HCFC, HFO, and R290 refrigerants (where material compatibility allows)
• Certified to CE Cat IV, EN ISO 4126-1, ASME-UV, and UKCA standards