5701AX-1740 - Henry - 1/2 NPTF-3/4 NPTF - 1740 - Brass Angle Type suitable for Transcritical CO2

The Henry 5701AX-1740 is a high-pressure brass angle-type pressure relief valve designed for transcritical CO₂ (R744) systems. It is part of Henry Technologies' 5701AX series, which is engineered for high-pressure applications ranging from 46 bar up to 130 bar.

🔧 Key Specifications

• Part Number: 5701AX-1740
• 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: 1740 psi (approx. 120 bar)
• Operating Temperature Range: -40°C to +120°C
• Seal Material: Fluoroelastomer soft seat
• Certifications: CE Cat IV, EN ISO 4126-1, ASME-UV, UKCA 
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✅ Features

• Designed for transcritical CO₂ applications
• High flow capacity for effective 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)