Shut-off-Valve 3-4-20mm3-way-dual--3-4-fpt-connection - Hanson

The Hansen H8022 is a 3/4" (20 mm) 3-way dual shut-off valve with 3/4" FPT (female pipe thread) connections, designed specifically for use in ammonia (NH₃) refrigeration systems, particularly in parallel pressure relief valve installations.

🔧 Technical Specifications

• Model: H8022
• Connection Size: 3/4" FPT (inlet and outlet)
• Valve Type: 3-way dual shut-off
• Material: Forged steel body
• Weight: ~4 lbs
• Dimensions: Approx. 9" W x 5" H x 10" L

🌟 Key Features

• Purpose: Allows for parallel installation of two pressure relief valves.
• Safety: Designed so that both relief valves cannot be isolated simultaneously, making it compliant with safety codes for refrigerant relief piping.
• Sealing:
  • Metal-to-metal seating for durability.
  • Non-leak packing with O-ring stem seal for long service life.
• Operation:
  • Can be frontseated (closes front port) or backseated (closes back port).
  • Backseated position is recommended for normal use to relieve pressure on the packing and reduce leak risk.