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Bell & Gossett Coupler #118708 (PD-35, PD-37, 60 "AA") - Oswald SupplyBell & Gossett Coupler #118708 (PD-35, PD-37, 60 "AA") - Oswald Supply
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Bell & Gossett Coupler #118709, (PD-35, PD-37, 60 "AA", 1522) - Oswald Supply
Hydrolevel Part #Wm-1 - Water Meter - Oswald Supply
Hydrolevel Part #Vxtc - Vxt Commercial Water Feeder - Oswald Supply
Hydrolevel Part #Vxt-24 - 24V Water Feeder/Steam Boiler - Oswald SupplyHydrolevel Part #Vxt-24 - 24V Water Feeder/Steam Boiler - Oswald Supply
Hydrolevel Part #Vxt-120 - 120V Water Feeder/Steam Boiler - Oswald SupplyHydrolevel Part #Vxt-120 - 120V Water Feeder/Steam Boiler - Oswald Supply
Hydrolevel Part #Os-200 - Wireless Outdoor Sensor Kit - Oswald Supply
Hydrolevel Part #V-120-2 - Water Feed/Steam - Oswald Supply
Hydrolevel Part #Foem-2 - 1'' X 1'' X 3/4'' C.I. Tee - Oswald SupplyHydrolevel Part #Foem-2 - 1'' X 1'' X 3/4'' C.I. Tee
Hydrolevel Part #El1214-Rsv - El1214-Rsv Probe - Oswald Supply
Hydrolevel Part #Cgt450-2060 - Cgt450-2060 Cut-Off - Oswald Supply
Hydrolevel Part #Cg550P - Cg550P Cut-Off - Oswald Supply
Hydrolevel Part #Cg400Ra-1090 - Cg400Ra-1090 Cut-Off - Oswald Supply
Hydrolevel Part #Cg450Ra-1090 - Cg450Ra-1090 Cut-Off - Oswald Supply
Hydrolevel Part #Cg450R-1090 - Cg450R-1090 Cut-Off - Oswald Supply
Hydrolevel Part #Cg450P-2060 - Cg450P-2060 Cut-Off - Oswald Supply
Hydrolevel Part #Cg450P-1090 - Cg450P-1090 Cut-Off - 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.