preventing seal degradation in steam or chemical applications

never leave a limit switch bypassed during operation as it is the primary safety against a cracked heat exchanger

While the spring itself is omnidirectional

it prevents internal heat exchanger temperatures from exceeding safe operational limits

Robertshaw 710-502 Gas Valve 30067439-890 preventing seal degradation in steamThe Robertshaw 710 502 Gas Valve is an industry standard millivolt gas valve specifically engineered for low capacity heating applications where space is at a premium. This unit features a 1 2 inch inlet and outlet and is factory calibrated for 3. 5 inch WC (Water Column) for natural gas operation, though it is compatible with liquid propane when utilizing the correct conversion components. As a "snap acting" control, it provides reliable millivolt