All earthenware traps must have heavy brass floor-plates, soldered to the lead bends and bolted to the trap flange, and the joint made permanently secure and gas-tight.
53 P.S. § 14832
All earthenware traps must have heavy brass floor-plates, soldered to the lead bends and bolted to the trap flange, and the joint made permanently secure and gas-tight.
53 P.S. § 14832