HS7/3 - Hansen - 1-1/4 (32MM) Solenoid Valve for Refrigerant

The Hansen HS7/3 is a 1-1/4" (32mm) flanged solenoid valve designed for industrial refrigeration systems, particularly for use with ammonia and other approved refrigerants. It is part of the HS7 series, known for its rugged, pilot-operated design and reliable performance.

Key Specifications

• Model: HS7/3
• Port Size: 1-1/4" (32mm)
• Connection Type: Flanged
• Valve Type: Pilot-operated solenoid valve
• Body Material: Ductile iron
• Piston: Stainless steel
• Seat Material: Teflon (main and pilot)
• Safe Working Pressure:
  • Standard: 400 psig (27 bar)
  • CO₂ Applications: 600 psig (41 bar)
• MOPD: 300 psi (20 bar), 500 psi (34 bar) for CO₂
• Flow Factor (Cv): 16.3 (Kv ≈ 14)
• Manual Opening Stem: Included
• Coil: Encapsulated, low-wattage molded coil (universal across HS7 series)
• Certifications: CSA Certified, CE Available  

Features

• Heavy-Duty Pilot Operation: Opens fully with a slight pressure differential when energized; closes with spring force when de-energized.
• Manual Opening Stem: For service and testing.
• Flexible Installation: Can be installed vertically or horizontally.
• Applications:
  • Liquid line feed to overfeed evaporators
  • Float switch-controlled accumulators
  • Thermal expansion valves
  • Hot gas defrost
  • Evaporator suction control