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the STAS9611T utilizes 1 3/8" ODF solid copper connections to minimize pressure drop and simplify the brazing process
OEM Compatibility: Designed specifically for Aaon equipment
the sudden increase in fluid velocity causes the internal automatic ball checks to seat horizontally (or vertically depending on the lower arm design)
Utilizing a 24VAC spring return actuator
Weil McLain 511-044-505 Gas Valve THPU32HP7Y the STAS9611T utilizes 1 3/8"The 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.
