ASME A112.14.3 pdf download GREASE INTERCEPTORS Tapered threads shall comply with ASME B1.20.1. Hubless connections shall comply with the dimensional requirements of ASTM A 888. 2.4 Flow Controls and/or Vents 2.4.1 The use and placement of flow controls and/ or vents or air intakes for grease interceptors shall be the option of the manufacturer. 2.4.2 When a flow control and/or...