Description
The Hansen H7777 is a 1/2" MPT x 3/8" FPT angle gauge valve with a seal cap for refrigeration systems. Gauge valves like this are commonly used to isolate pressure gauges on regulators and safety relief valves, and can also be used for pump-out and purging.
Key specifications
- Catalog number: H7777 (seal cap)
- Connections: 1/2" MPT x 3/8" FPT, angle pattern
- Body: forged steel, ASTM A105, zinc plated
- Stem: polished stainless steel, non-removable safety stem with 1/4" square flats
- Stem seal: graphite composite packing plus neoprene O-ring (dual seal)
- Seal cap: glass-filled polymer with neoprene O-ring
- Safe working pressure: 400 psig (28 bar); 600 psig (41 bar) available on request
- Operating temperature: -60°F to 240°F (-50°C to 115°C)
- Refrigerants: ammonia, R22, R134a, CO2 and other approved refrigerants
Common questions
Can this valve be used for oil draining?
No. Hansen states these gauge valves are not recommended for oil drain because the port is too small for viscous oil.
Is a bar handle available?
Hansen lists the H7777 only in a seal cap version in Bulletin G409d.
Specifications are based on Hansen Technologies Bulletin G409d (Gauge, Purge and Transducer Valves, Jan 2013). 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.
