GW Hansen Butt Welded Globe Shut-Off Valves

These 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. Forged and cast steel bodies are lightweight, yet have substantial wall thickness to help overcome corrosion loss. 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 noleak seal-plus-stem-packing design. This seal design is used exclusively on Hansen shut-off valves and virtually eliminates stem seal leakage.

APPLICATIONS

Typical uses include:

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.

KEY FEATURES

• Polished Stainless Steel Stem
• Patented No Leak Seal-Plus-Packing Design
• Ball Bearing
• Taper Seat
• Anti-Spin Seat Disc
• Back Seat for Seal Replacement

FEATURES

• Globe and angle valves available
• Low pressure drop design
• Interchangeable handwheel or seal cap.
• Teflon seat disc.
• Also available as Hand Expansion Valve.
• Chain actuators available.
• Suitable for ammonia, R22, R134a, R507, R410 and other Hansen approved refrigerants.
• Valves for CO2 systems to 600 psig (40 bar) available.
• Extended neck available (1/2"-4") for additional insulation clearance.