N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 14-9.28

Current through Register Vol. 46, No. 45, November 2, 2024

Section 14-9.28 - Blowoff cock

(a) A bottom blowoff cock shall have the plug held in place by a guard or gland. The end of the plug shall be distinctly marked in line with the passage.

(b)

(1) The blowoff valve or valves and the pipe between them and the boiler shall be of the same size except where a larger pipe for the return of condensation is used.

(2) All fittings between the boiler and valves shall be of steel for pressures over 100 psi and the thickness of pipe and fittings shall not be less than that of schedule 80 pipe.

(3) In all cases the valves and fittings from the boiler to and including the required stop valves shall be equal at least to the requirements of the applicable standards given in ASME for a pressure 1.25 times the maximum allowable working pressure of the boiler or 225 psi more than the maximum allowable working pressure of the boiler, whichever is less, but shall not be less than 100 psi.

(4) When the pressure does not exceed 200 psi, the valves or cocks shall be bronze, cast iron, ductile iron, or steel. The valves or cocks if of cast iron, shall meet the requirements of the applicable American National Standard for class 250 as given by ASME and if of bronze, steel, or ductile iron, construction shall meet the requirements of the applicable standards given by ASME.

(5) For pressures over 200 psi, the valves or cocks shall be of steel construction equal at least to the requirements of the American National Standard for 300 psi as given in the ASME Code.

N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 14-9.28