Hansen AW402H, 4 Ammonia Shut-off Valve Angle, Welded, Handwheel

Hansen low pressure drop refrigerant shut-off valves are designed to be butt-welded directly to steel piping, thereby eliminating potential leaky flanges or threaded joints and simplifying installation. Cast steel bodies are lightweight, yet have substantial wall thickness to overcome corrosion potential. The cast steel body is rigid, reducing the potential for seat leakage due to flexing of the valve body under abnormal conditions. The "heart" of Hansen shut-off valves is the patented no-leak seal-plus-stempacking design. This seal design is used exclusively on Hansen shut-off valves and virtually eliminates stem seal leakage.Applications:Ammonia refrigeration system suction, liquid, discharge, recirculating liquid, hot gas, thermosyphon, and oil lines, using handwheel or seal cap models.Steel pipe portions of halocarbon, commercial, industrial, and air conditioning systems, using seal cap models.Valves are also available for other fluids such as propane, propylene, and glycol with compatible seals. Contact factory with specific fluid and application details for written approval.The low friction, no leak stem seal design permits the use of chain actuation for crossover applications without the need to retighten the packing.Additional Features:Globe and angle valves available.Low pressure drop designInterchangeable handwheel or seal cap.Teflon seat disc.Also available as Hand Expansion Valve.Chain actuators available (11⁄2" or 40mm and larger).Suitable for R717 (ammonia), R22, R134a, R507a, R404a, R744 (CO2) and other Hansen approved refrigerants.600 psig (41 bar g) SWP valves are available.Extended neck available up through 4" (100mm) for additional insulation clearance.