ASME A112.14.3 pdf download Hydromechanical Grease Interceptors
2.2 Inlet and Outlet Connections
2.2.1 The inlet and outlet connections of the grease interceptor shall be either pipe thread or of a plain end diameter to allow hubless coupling connections. The manufacturer’s installation requirements shall iden- tify installation parameters sufficiently to enable connec- tion consistent with the test parameters ofthis Standard.
2.2.2 Grease interceptor connections shall complywith ASME A112.3.1, ASME B1.20.1, ASTM A53/A53M, ASTM A888, or ASTM D2665.
2.2.3 Grease interceptors shall be connected as prescribed by the manufacturer, consistent with this Standard.
2.3 Flow Controls and/or Vents
2.3.1 The use and placement of flow controls and/or vents or air intakes for grease interceptors shall be in accordance with the manufacturer’s installation require- ments. When a flow control is not required by the manu- facturer, testing shall be conducted at the manufacturer’s prescribed rate offlow withoutany restriction ofthe flow from the test apparatus to the grease interceptor.
2.3.2 When a flowcontrol (vented or unvented) and/or ventis used during testing for rating a grease interceptor, the rating of the unit shall not exceed the tested flow through the flow control. The manufacturer’s literature shall reflect that the rating was achieved with the flow control and/or vent attached, and that the flow control and/or vent shall be installed with the unit.
3.1 Construction of Test Equipment
3.1.1 Test Sink
(a) The sinks shall be constructed of corrosion resis- tant material, structurally reinforced and supported on legs. The legs shall be of such length that the rim of the sinks are 3 ft (0.91 m) above the floor. The sink legs shall be structurally braced.
(b) For flow rates up to and including 50 gpm (189 L/ min) the test sinks shall be 50 gal (189 L) and have the following inside dimensions: 8 ft (2.44 m) in length, 2 ft (0.61 m) inwidth, and12 1 ∕ 2 in. (0.32 m) indepth. Thesinks shall have two compartments of equal length.
(c) For flowrates above 50 gpm (189 L/min) up to and including 100 gpm (378 L/min), the test sinks shall be as follows: (1) multiples of two of the sinks specified in (b).
(2) a 100 gal sink having the following dimensions: 128 in. (3.2 m) in length, 36 in. (0.91 m) in width, and 12.5 in. (0.32 m) in depth; it shall be divided into two equal compartments.
(d) Forflowratesofgreaterthan100 gpm(378 L/min), two or more sinks as specified in (b) or (c) shall be used.
188.8.131.52 Sink Waste Connections. For sinks constructed per para. 3.1.1(b), each sink compartment shall be fitted with a 1 1 ∕ 2 in. (38 mm) standard sink waste connection with flange, threaded or slip joint tail- piece, and locknut. The waste connections shall be located on opposite sides of the center partition in the corner formed by the front side of the sink and the center partition. For sinks constructed per para. 3.1.1(c), each sink compartment shall be fitted with a 2 in. (51 mm) sink waste connection with flange, threaded or slip joint tail- piece, and locknut. The waste connections shall be located on opposite sides of the center partition in the corner formed by the front side of the sink and the center partition.
184.108.40.206 WaterLevelGauges. Each compartmentshall be equipped with a gauge connection and a water level gauge with gauge glass. Each gauge connection shall be fitted into the bottom of a sink compartment and in close proximity to the waste outlet. Each gauge shall be mounted on the outside of the sink, adjacent to its respective gauge connection, and shall extend diagonally upwardfromthebottomcentertothetop outsidecorners. These gauges shall be calibrated to read the number of inches of water in the sink compartments above the sink waste flange.
220.127.116.11 Movable Sink Partitions. Each compartment ofthe sinkshall be fitted with a movable partition, making it possible to regulate the size ofthe compartment to any desired capacity.