Weil McLain 511-044-505 Gas Valve THPU32HP7Y It can be configured for

It can be configured for positive pressure

Featuring an 8 square inch effective diaphragm area

Utilizing a 24VAC spring return actuator

the sudden increase in fluid velocity causes the internal automatic ball checks to seat horizontally (or vertically depending on the lower arm design)

Weil McLain 511-044-505 Gas Valve THPU32HP7Y It can be configured forThe Weil McLain 511 044 505 gas valve is a critical service component engineered for high efficiency hydronic systems. This 24V redundant gas valve is factory set for natural gas applications with a 3. 5" WC manifold pressure, ensuring precise fuel regulation for consistent combustion. Built for durability in commercial and residential settings, it features a 3 4" x 1" NPT connection, making it a direct replacement for specific boiler configurations.