Mueller A17936 Check Valve 318172-701 The bellows are designed to

The bellows are designed to withstand high working pressures

as some high-capacity industrial valves may require an adapter or a 3/8-16 thread version

preventing common nuisance trips in control boards

this specific part number is designed for mid-to-high efficiency models

and the Rheem-Ruud 61-21922-39 TXV is the specific OEM solution for R-22 systems requiring a 3/8" x 3/8" configuration

Mueller A17936 Check Valve 318172-701 The bellows are designed toThe Mueller A17936 is a professional grade 1 2" Magnetic Check Valve engineered for heavy duty refrigeration and air conditioning systems. Featuring a hermetically formed solid copper body, this valve ensures zero leak potential while maintaining structural integrity under high pressure conditions. Unlike traditional spring loaded variants, its magnetic closure mechanism provides a more positive seal with a significantly lower pressure drop, making it