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TRV
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Mike T., Swampeast MO
Member Posts: 6,928
Hot water and two-pipe steam use the same TRV bodies.
One-pipe steam TRV bodies actually replace the air vent as the internal passageways in the hot water/2PS bodies are far too small to let steam and condensate simultaneously travel in opposite directions.
The one-pipe steam TRV bodies <I>with an integral vacuum breaker</I> are HIGHLY recommended. Without the vacuum breaker when the steam "collapses" into condensate at the end of the cycle, air won't replace it in the rad, it will have sub-atmospheric pressure inside and condensate can back up.
One-pipe steam TRV bodies actually replace the air vent as the internal passageways in the hot water/2PS bodies are far too small to let steam and condensate simultaneously travel in opposite directions.
The one-pipe steam TRV bodies <I>with an integral vacuum breaker</I> are HIGHLY recommended. Without the vacuum breaker when the steam "collapses" into condensate at the end of the cycle, air won't replace it in the rad, it will have sub-atmospheric pressure inside and condensate can back up.
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TRV's
Is there a difference ,hot water and steam0
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