Okla. Admin. Code § 380:25-5-29

Current through Vol. 42, No. 6, December 2, 2024

Section 380:25-5-29 - Stop valves and check valves

(a) If a boiler may be closed off from the heating system by closing a steam stop valve, there shall be a check valve in the condensate return line between the boiler and the system.

(b) If any part of a heating system may be closed off from the remainder of the system by closing a steam stop valve, there shall be a check valve in the condensate return pipe from that part of the system.