§ 3a.145. Steam stop valves.
(a) A boiler equipped with a steam stop valve must contain a check valve in the condensate return line between the boiler and the system.
(b) A heating system equipped with a steam stop valve must have a check valve in the condensate return pipe from the part of the system equipped with the steam stop valve.
Cross References This section cited in 34 Pa. Code § 3a.3 (relating to scope).
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