leak-free installation in tight boiler cabinets

The CW shaft end rotation and stud mounting pattern ensure a drop-in fit for gas-fired unit heater repairs

It features a factory-preset 4" WC natural gas pressure regulator and supports a high-flow capacity of 720

it eliminates the need for field programming

the S211GF02N5EG5 typically requires a minimum of 5 PSI to assist the diaphragm in opening properly

Marley Engineered Products 4520-2025-000 High Limit 318423-701 leak-free installation in tight boilerFor service technicians maintaining Marley high output heating systems, the Marley Engineered Products 4520 2025 000 High Limit is a critical safety component designed for open on rise circuit protection. This SPST (Single Pole Single Throw) limit switch is engineered to trip and interrupt the heating circuit when temperatures reach 180F, preventing heat exchanger damage and potential fire hazards. As an automatic reset control, it restores continuity