229 Neb. Admin. Code, ch. 21, § 020
Current through September 17, 2024
In all cases where returns are fed back to the boiler by gravity, there shall be a check valve and stop valve in each return line, the stop valve be placed between the power boiler and the check valve, and both shall be located as close to the power boiler as is practicable.
229 Neb. Admin. Code, ch. 21, § 020