Flange-Bolt 3 Mpt X 4

The ME873S Series valves feature our new modular Excela- flange 4 bolt inlet flange design that can be easily adapted to both NPT thread or socket weld type B companion flanges ranging from 1-1/4” to 2” in diameter making it universal to piping sizes within this range. This innovaƟve system allows installers the ability to eliminate unnecessary extra connecƟons as well as possible leak points by integraƟng a convenient 4 bolt flange union at the valve inlet. Marshall Excelsior High Flow back check valves provide back flow protection to container openings or liquid lines where flow is intended for one direction. The valve is normally held closed until pressure activates the valve when flow is directed into piping or containers causing the back check to open. When flow stops or reverses, the check returns to the closed position. All MEC High Flow Back Check valves are supplied with o-ring soft seats, which can be removed for metal to metal seating. Also available with permanently bonded on main valve seals (SBN). FEATURES: Universal seat - Remove O-ring seal to create metal to metal seating surface or (SBN) bonded seat Up to 20% MORE FLOW than nearest competitor Maximum product flow achieved by full port and stem travel design All models feature stainless steel stem, spring and valve guide Valve body: Ductile Iron / Shutoff poppet assy: steel & stainless steel Available in 2” NPT and 3” NPT x 4 Bolt Type A Flange All models can be used with LP Gas or NH 3 Universal 4 bolt flange inlet type A