§ 47-26. Control valves.

Latest version.

Control valves shall be of an approved type and shall be provided with a stuffing box of liberal size containing a removable capped gland designed to compress the packing against the valve stem and arranged so as to facilitate removal. Such valves shall be designed to close against the supply and to prevent withdrawl by stem by continued operation of the hand wheel. The use of parking affected by the oil heat is prohibited.

                    
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