HA4A/31 - Hansen - 1-1/4 (32MM) Pressure Regulator, Range A

The Hansen HA4A/31 is a 1-1/4" (32 mm) modular pressure regulator designed for use in ammonia (NH₃) and other industrial refrigeration systems. It is part of the HA4A series, known for its rugged construction, modular design, and high reliability in demanding environments.

🔧 Technical Specifications

• Model: HA4A/31
• Port Size: 1-1/4" (32 mm)
• Connection Type: Threaded (FPT)
• Pressure Range: Range A (typically for lower pressure applications)
• Safe Working Pressure: 400 PSIG (27 bar)
• Body Material: Ductile iron
• Temperature Range: –60°F to +240°F (–50°C to +115°C)
• Refrigerants: NH₃, R22, R134a, CO₂, and other Hansen-approved refrigerants
• Certifications: CSA Certified, CRN for Canada