Description
The Hansen AW301H is a 3" (80 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.
Hansen lists bonnet assembly kit 50-1044 as the 2-1/2" and 3" butt weld bonnet replacement kit.
Key specifications
- Catalog number: AW301H (angle, handwheel)
- Size: 3" (80 mm), butt weld; connections match Schedule 40 pipe
- Flow coefficient (angle): Cv 205
- 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 AW301H and the AW301C?
Both are 3" butt weld angle valves. The H suffix means this valve ships with a handwheel, while the AW301C 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.
