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Hydrolevel Part #45-322 - Casting, 1'' High Pressure Tee - Oswald Supply
Hydrolevel Part #45-343 - Valve, 24 Volt Solenoid - Oswald SupplyHydrolevel Part #45-343 - Valve, 24 Volt Solenoid - Oswald Supply
Hydrolevel Part #45-338 - Relay, Three Pole 120 Volt - Oswald Supply
Hydrolevel Part #45-337 - Relay, Two Pole 120 Volt - Oswald Supply
Hydrolevel Part #45-310 - 711C With Fittings - Oswald Supply
Hydrolevel Part #45-303 - Casting, 250 - Oswald Supply
Hydrolevel Part #45-210 - 1150 Probe - Oswald SupplyHydrolevel Part #45-210 - 1150 Probe - Oswald Supply
Hydrolevel Part #404A - 400A Cut-Off - Oswald Supply
Hydrolevel Part #45-127 - Vxt Commercial (Control Only) - Oswald Supply
Hydrolevel Part #400Svr - 400Svr Cut-Off - Oswald Supply
Hydrolevel Part #400Sva - 400Sva Cut-Off - Oswald Supply
Hydrolevel Part #400Ra - 400Ra Cut-Off - Oswald Supply
Hydrolevel Part #400Sv - 24V Lwco W/15Sec - Short Probe - Oswald Supply
Hydrolevel Part #400R - 24V Lwco 15Sec Delay W/Rem Mt - Oswald Supply
Hydrolevel Part #400P - 400P Cut-Off - Oswald Supply
Hydrolevel Part #3000 - Cold Start Operation Adjust - Oswald Supply
Hydrolevel Part #250Mwc - 250Mwc Cut-Off/Pump Control - Oswald Supply
Hydrolevel Part #250M - 250M Cut-Off/Pump Control - Oswald Supply
Hydrolevel Part #250-Co - 250-Co (Control Only) - Oswald Supply
Hydrolevel Part #1214C-1 - Casting, 1214C-1 - Oswald Supply

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Boiler Heating Supplies Controls FAQs

Boiler controls include thermostats, transformers, control boards, low water cut-offs, safety valves, and circulator pumps that regulate and protect the heating system.

A low water cut-off shuts down the boiler's burner if the water level drops too low, protecting the boiler from operating dry and overheating.

Yes. Replacement Argo parts such as control boards, transformers, and wire kits are available for electric boiler systems.

Manufacturers typically recommend testing safety and relief valves at least once a year to confirm they release pressure properly. Always check with manufacturer safety guidelines.