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Hydrolevel Part #550R - 550R Cut-Off - Oswald Supply
Hydrolevel Part #48-130-10 - Wire Well Brush - Oswald Supply
Hydrolevel Part #48-121 - Hydrostat Pipe Mount Kit (48'') - Oswald Supply
Hydrolevel Part #48-104 - Hydrostat Remote Well Kit(20') - Oswald Supply
Hydrolevel Part #48-103 - Hydrostat Remote Well Kit(10') - Oswald SupplyHydrolevel Part #48-103 - Hydrostat Remote Well Kit(10') - Oswald Supply
Hydrolevel Part #45-715 - 120 Volt Feed Valve In J-Box - Oswald Supply
Hydrolevel Part #48-102 - Remote Mount Kit,48'',For 3150 - Oswald SupplyHydrolevel Part #48-102 - Remote Mount Kit,48'',For 3150 - Oswald Supply
Hydrolevel Part #48-101 - Remote Mount Kit,24'',For 3150 - Oswald SupplyHydrolevel Part #48-101 - Remote Mount Kit,24'',For 3150 - Oswald Supply
Hydrolevel Part #450Ra - 450Ra Cut-Off - Oswald Supply
Hydrolevel Part #450R - 450R Cut-Off - Oswald Supply
Hydrolevel Part #450P - 450P Cut-Off - Oswald Supply
Hydrolevel Part #450A - 450A Cut-Off - Oswald Supply
Hydrolevel Part #45-725 - 24 Volt Feed Valve In J-Box - 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.