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Dunham trap lifespan?
guzzinerd
Member Posts: 244
There was an inch of dust on top of this cap. Radiator's cold. How likely is it that i need to replace the innards?
Bryant 245-8 2-pipe steam in a 1930s 6-unit 1-story apt building in the NM mountains. 26 radiators heating up 3800sqf.
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Comments
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Unless it has been abused, it's probably fine -- but it's easy to check. With the system running for some time -- long enough for the radiator in question to be fully hot -- three possibilities. The radiator doesn't heat. Trap failed closed. The radiator does heat, and the return pipe is also steam hot (not hot, but steam hot). Trap is failed open. Radiator does heat, return pipe not above 207 or so. Trap is fine.Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England1 -
Jamie Hall said:Unless it has been abused, it's probably fine -- but it's easy to check. With the system running for some time -- long enough for the radiator in question to be fully hot -- three possibilities. The radiator doesn't heat. Trap failed closed. The radiator does heat, and the return pipe is also steam hot (not hot, but steam hot). Trap is failed open. Radiator does heat, return pipe not above 207 or so. Trap is fine.
Pretty sure no one has touched the traps for decades, just gonna rebuild/replace them all.Bryant 245-8 2-pipe steam in a 1930s 6-unit 1-story apt building in the NM mountains. 26 radiators heating up 3800sqf.0 -
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