ASME A112.18.8-2009 pdf – In-Line Sanitary Waste Valves for Plumbing Drainage Systems.
1.4 Definitions
blaslJt’r/clwckisaç rneinfrr: the component of the sanitary waste valve that provides the sealing function.
sautari, usiste valve: a product used as an alternate to a water-filled tubular waste trap which provides protection for the property from foul air in the sewer.
2.1 Material
The valve shall meet the material requirements of ASTM F 409. The valve shall be installed in accessible locatK,ns
2.2 Seal Material
Seal materials shall comply with or exceed classification M3BAU7 A14 1113 C12 F17 or M211C714 1114 £014 E034 of ASTM D 2000.
2.3 Bladder/Checking Member Material
Bladder/checking member material comply with or exceed classification M3FC607 EAI4 E016 Gil of ASTM D 2000.
2.4 Valve Inlet
2.4.1 The valve inlets shall be l in (31.8 mm) or l!. in. (38.1 mm), nominal straight or with an 871.j-drg elbow or be standard pipe size straight inlet (see Fig. 1).
2.4.2 The base of the thread may be sealed by a sealing washer (inlet set) at the base of the thread. The useful thread length shall be between in. (9.5 mm) and in. (12.7 mm). All threaded fixture outlets shall have a minimum three-thread engagement for fittings and plastic nuts to correctly engage/energize the inlet seal in accordance with ASTM F 409.
2.4.3 If required for horizontal installations, an
87.dcg knuckle adapter shall be available to allow the valve to be connected in a horizontal position. The device and connected piping, when installed in a horizontal position, shall have a minimum slope of 1:414
38.4 Performance Requirements. At the completion of the above test, the valve shall be tested in accordance with para. 3.2 and meet the Liirements of para. 3.23.
3.9 Resistance to ChemicaLs and So’vents
3.9.1 Test Requirement. The valve shall be attached to a sink fitted with a standard cms.spiece outlet.
3.9.2 Substances to Be Tested. Each test shall be carried out separately using a qoantity of 4 pt (12 II oz or 035 L) of one of the following solvents:
ta) solvent 1: liquid drain cleaner containing sulfuric acid
(1’) solvent 2: mineral spirits
(c) solvent 3: kerosene
3.9.3 Test Method. The material shall be poured into the sink outlet. After one minute, pour 4 p4 (M Ii oz or 1.9 1) of cold water into the sink outlet to flush the solvent from the sink The sstem will then be left for 24 hr.
3.9.4 Performance Requirements. At the completion of the above lest, the valve shall be tested in accordance with para. 3.2 arid meet the requirements of para. 3.2.3.
3.10 Drop
3.10.1 Test Method. The test shall be conducted over a clean concrete surface. Hold the valve with th lowest point upside down. 3 It (0.91 m) above the surface and release the valve. Pick up the valve and change orientation (top uppermost) and release onto concrete again. I’ick up the valve one linal time and change orientation (sideways) and release onto concrete. Observe the valve for any changes.
3.10.2 Performance Requirements. The valve shall show no signs of deformation or breakage that may affect its function.
3.11 We Cycle
3.11.1 Test RequIrement. Resistanceofthevalveto cyclic fatigue under ambient conditions shall be tested using the apparatus shown in Fig. 4.
3.11.2 Test Method. The valve under test shall undergo 20,000 cycles. A cycle comprises 10 sec exposure to the solution, followed by 10 sec of draining.
3.11.3 Performance Requirements. At the completion of the above test, the valve shall be tested in accordance with para. 3.2.