or M copper water tube and ACR tubing

also recognized in the field as the QC-6

Avoid mounting on the bottom where mineral deposits settle

Technical professionals recognize the

Modine 5H0730570004 Vent Switch or M copper water tubeThe Modine 5H0730570004 Vent Switch is a critical safety component engineered for precise thermal monitoring in high performance heating systems. This 220F manual reset blocked vent switch is designed to detect excessive flue gas temperatures caused by obstructions, ensuring the unit shuts down before hazardous conditions occur. Acting as a direct replacement for 5H73057 4, this OEM part maintains the operational integrity and safety standards