8080MT Expansion Tank Valve

The 8080MT Expansion Tank Valve redefines safety in pressurized hydronic, boiler, and industrial cooling systems. Built to withstand 600 PSI WOG (Water, Oil, Gas) and extreme thermal cycling, this valve features rugged MNPT (Male National Pipe Thread) connections and a chrome-plated full-port ball for uninterrupted flow control. Its DZR lead-free brass body and military-grade plating thrive in corrosive environments like brine loops or chemical-laden cooling systems.

Key Features & Benefits

✅ Extreme-Pressure Isolation: Full-port ball valve isolates expansion tanks during maintenance, preventing shutdowns in district heating or industrial boiler systems.
✅ Threaded Durability: MNPT connections ensure vibration-resistant seals in high-pressure steam or glycol applications.
✅ Arctic-to-Boiler Resilience: Operates from 15°F to 260°F (-9°C to 127°C) with antifreeze (sub-freezing) or anti-boil additives (high-heat).
✅ Zero-Downtime Maintenance: Adjustable packing gland allows stem seal replacement without removing the valve from the system.
✅ Scaling Immunity: Virgin PTFE seats and chrome-plated ball resist mineral buildup in hard water or geothermal systems.

Technical Specifications

• Materials: DZR Lead-Free Brass Body | Chrome-Plated Ball | Virgin PTFE Seats
• Pressure Rating: 600 PSI WOG
• Temperature Range: -9°C to 127°C (15°F to 260°F) with additives
• Connections: MNPT Threaded (3/4" standard)
• Certifications: NSF/ANSI 61 (potable water) | AB1953 Lead-Free

Ideal Applications

• Municipal district heating expansion tank service
• Brewery/cannery steam system pressure relief
• High-pressure solar thermal glycol loops
• Industrial process cooling with thermal oil

Why the 8080MT Dominates

This valve isn’t just a component—it’s a system lifeline. The MNPT threading provides a rock-solid seal in male-threaded piping systems, while the blow-out-proof stem prevents catastrophic failure during pressure spikes. Unlike smaller port valves, its full-bore design maintains maximum flow rates during emergency purges, critical for 500+ gallon thermal systems.

Note: Use thread sealant compatible with system media. Always pressure-test after installation.

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