GENERAL PLUMBING FITTINGS AND ASSEMBLIES AND DRAINAGE PRODUCTS-NAMELY, ROOF DRAINS, DECK DRAINS FOR DRAINING SHIP DECKS, FLOOR DRAINS, SHOWER DRAINS, CORNICE DRAINS, GUTTER DRAINS, OIL INTERCEPTING DRAINS, SWIMMING POOL DRAINS, PLUMBING TRAPS TO PREVENT ESCAPE OF SEWER GAS THROUGH A FIXTURE TO WHICH THE TRAP IS CONNECTED AND TRAP PRIMERS FOR INSTALLATION IN SUPPLY LINES TO BLEED OFF WATER INTO THE TRAPS OF FLOOR AND AREA DRAINS TO PREVENT LOSS OF THE TRAP SEAL BY EVAPORATION, GREASE AND SOLIDS INTERCEPTORS, CHECK VALVES, WALL CLOSET FITTINGS CONSISTING OF A COMBINED SUPPORT FOR AND A FITTING TO DRAIN THE WASTE WATER FROM WALL FIXTURES, SINK CARRIERS FOR SUPPORTING WASH SINKS, ACCESS BOXES FOR GAINING ACCESS TO VALVES AND FITTINGS BEHIND WALLS AND UNDER FLOORS, WATER SUPPLY HYDRANTS OF THE POST TYPE AND STREET WASHER TYPE, VALVES OF THE PRESSURE SEAL TYPE AND COMPRESSION CLOSURE TYPE, AND FOOT VALVES FOR INSTALLATION AT THE INLET OF SUCTION LINES TO PUMPS TO PREVENT LOSS OF PUMP PRIME, FLOW CONTROL DEVICES FOR CONTROLLING THE FLOW OF FLUID IN A PIPE LINE, PIPE ADAPTORS, CLEAN OUT FITTINGS FOR PERMITTING THE CLEANING OF PIPE LINES AND FITTINGS CONNECTED THERETO, STRAINERS TO SEPARATE SOLIDS FROM GASES OR LIQUIDS FLOWING THROUGH A PIPE LINE, PIPE COUPLINGS, CESSPOOLS, SCUPPER VALVES TO ACT AS A CHECK AGAINST RETURN FLOW IN WASTE LINES ABOARD SHIP, VENT TERMINALS TO PREVENT TWO WAY BREATHING OF A TANK WHILE AT THE SAME TIME PREVENTING ENTRANCE OF WATER INTO THE TANK OR FLASH BACK OF FIRE THROUGH FUMES IN A VENT LINE, AND PIPE SLEEVES