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

The Hansen AW402H is a 4" Ammonia Shut-off Valve designed for industrial refrigeration systems. Here's a detailed breakdown:

🔧 Product Overview

• Model: AW402H
• Type: Shut-off Valve
• Valve Style: Angle
• Connection: Butt Weld (Welded)
• Handle: Handwheel
• Refrigerant Compatibility: NH₃ (Ammonia), R22, R134a, R507a, R404a, R744 (CO₂), and other Hansen-approved refrigerants 

📐 Specifications

• Port Size: 4" (100 mm)
• Body Material: Cast steel (ASTM A-352, Grade LCB)
• Bonnet Style: Screwed Bonnet
• Seat Disc: Retained PTFE (Teflon)
• Stem: Polished stainless steel
• Stem Packing: Graphite composite + neoprene O-ring
• Top Cover: Ductile iron (ASTM A-536)
• Operating Temperature: -60°F to 240°F (-51°C to 115°C)
• Working Pressure: Up to 600 psig (41 bar g)
• Weight: 43 lbs. 

⚙️ Key Features

• Low Pressure Drop Design
• No-Leak Stem Seal: Patented design minimizes leakage
• Extended Neck: For insulation clearance
• Chain Actuation Compatible: For sizes 1½" and larger
• Applications:
  • Suction, liquid, discharge, recirculating liquid
  • Hot gas, thermosyphon, and oil lines