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The McDonnell & Miller 157-1 Replacement Casting is a mission-critical component for maintaining the structural integrity of Series 157 low water cut-offs
Using it on normally open hardware may result in improper plunger seating or coil burnout
These OEM O-rings are designed to be compatible with the standard lubricants and refrigerants utilized in York commercial HVAC units
Reliable Gas Containment: High-grade brass construction prevents fatigue and stress cracking during high-cycle heating operations
Parker 101905 Regulator THPU32HP7Y The McDonnell & Miller 157-1The Parker 101905 is a high performance A81OE inlet pressure regulator designed for precise pressure control in commercial refrigeration and HVAC systems. Featuring a 1 1 8" ODF solder connection and a full 1 1 8" port, this regulator is engineered to maintain constant evaporator or suction pressure regardless of load fluctuations. As an externally equalized valve, it provides superior accuracy in tracking system changes, making it ideal for defrost
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