ABSTRACT
Hepworth waste valves used in lieu of traps avoid the risk of suction emptying the traps on long pipe runs.
Sources: Building Regulations-Approved Document H Hepworth Building Products
Covers are manufactured in steel plate, galvanized steel and cast iron – overall sizes for cast iron will be larger. Covers may have single or double seals, plain or recessed tops, and be multiple leaf or continuous for ducting. Alternative features include chambered keyholes, handlift recesses and locking screws.
