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Throttling Valve

Alan (California Radiant) Forbes
Member Posts: 3,261
Comments
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Looks like a blowtorch or a camp stove.0
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really old0
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Oh lovely! Does it still work? I would guess that that balance arrangement was in some way dependent on water temperature? In a steamer, that would have been activated by steam pressure.Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0 -
That is correct. It was developed from beam-balance regulators used on coal boilers. I've seen one or two still in service.Jamie Hall said:Oh lovely! Does it still work? I would guess that that balance arrangement was in some way dependent on water temperature? In a steamer, that would have been activated by steam pressure.
All Steamed Up, Inc.
Towson, MD, USA
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Consulting0 -
I used to buy Detroit Lubricator modulating gas valves back in the 1960's and early 1970"s. from Sid Harvey. I was glad to see them go away. That pilot was one of those liquid filled pilot safeties that worked until they didn't. They took way too long to respond to a pilot flame outage.0
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This is on an Ideal Gas Boiler hot water boiler. The owners were having a delayed ignition explosion because the main pilot - closest to the burners - was too low. I increased the flame so that it lit off properly, but then saw flame rollout with CO > 2,000 ppm, so I shut it down and gave them a price for a replacement. I probably could have taken it apart to clean the HX, but dang, some of the really old stuff falls apart when you try to work on it and never goes back together again to work properly.
I think that second flame is pilot safety because there's nothing else to protect against flame outage.
Often wrong, never in doubt.0
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