Description
The Hansen AW402H is a 4" (100 mm) butt weld angle shut-off valve with a handwheel, built for industrial refrigeration piping. It welds directly to Schedule 40 steel pipe, avoiding the leak points of flanged or threaded joints, and uses Hansen's non-leak seal plus stem packing design to minimize stem leakage.
The angle (90-degree) flow path and low pressure drop design suit main and branch lines. Typical uses include ammonia system suction, liquid, discharge, recirculated liquid, hot gas, thermosyphon and oil lines.
Key specifications
- Catalog number: AW402H (angle, handwheel)
- Size: 4" (100 mm), butt weld; connections match Schedule 40 pipe
- Flow coefficient (angle): Cv 320
- Body: cast steel, ASTM A-352 Grade LCB
- Bonnet: ductile iron, ASTM A-536
- Stem: polished stainless steel; seat disc: retained PTFE (Teflon); stainless steel ball bearings
- Stem packing: graphite composite plus neoprene O-ring in series
- Handwheel: zinc plated iron alloy
- Safe working pressure: 400 psig (28 bar g) standard; 600 psig (41 bar g) available on request
- Operating temperature: -60°F to 240°F (-51°C to 115°C) standard
- Refrigerants: R717 (ammonia), R22, R134a, R507a, R404a, R744 (CO2) and other Hansen-approved refrigerants
Common questions
What is the difference between the AW402H and the AW402C?
Both are 4" butt weld angle valves. The H suffix means this valve ships with a handwheel, while the AW402C ships with a seal cap. Hansen notes that the handwheel and seal cap are interchangeable.
Can this valve be used with CO2 or halocarbon refrigerants?
Hansen lists the butt weld shut-off valve line as suitable for R717 (ammonia), R22, R134a, R507a, R404a, R744 (CO2) and other Hansen-approved refrigerants.
Specifications are based on Hansen Technologies Bulletin G359d (Butt Weld Shut-Off Valves, Nov 2019). Confirm fit, ratings and application requirements before ordering.
Disclaimer: The image shown is a general representation of the product category and may not depict the exact part number offered. Actual product appearance, specifications, and configuration may vary.
