Weil McLain 510-312-150 Operating Limit THPU32HP7Y allowing the piston actuator to

allowing the piston actuator to maintain its full rated stroke without adding significant resistance

meeting noise emission standards to eliminate electrical interference with furnace controllers

provided there is enough clearance for the terminal connections

allowing for seamless horizontal or vertical mounting depending on your existing field configuration

and M1MB models

Weil McLain 510-312-150 Operating Limit THPU32HP7Y allowing the piston actuator toThe Weil McLain 510 312 150 Operating Limit is a professional grade combination operating limit and fixed high limit temperature control engineered for hydronic heating systems. This dual function component is a primary safety and control interface for Weil McLain EG, EGH, and PFG boilers, specifically optimized for sizes 85 and 95. It features a versatile operating temperature range of 140F to 240F and a factory set fixed high limit at 240F to