Elga Labwater Pressure Reg Tap H2o Unit EA. The tap is also used to connect gas cylinders to the water service on a fire premamble preventing damage from backflow of cylinders on-site. A pressure release valve on the tap controls the flow of water to prevent backflow of cylinders. Approved for drinking water standards. The tap has a shut-off feature which prevents a backflow of contaminated water. The spout has a shut-off feature and a test mark window to check cylinders for compliance with regulations governing water quality. Specifications for Elga Labwater Pressure Reg Tap H2o LA512: Catalog number: 89204-218 Type: INST/EQUIP 0-499 Description: Feedwater Pressure Regulator Supplier No.: LA512 Package Contents: Elga Labwater Pressure Reg Tap H2o LA512 / 89204-218 The Elga Labwater Pressure Reg Tap H2o LA512 is a quality addition to the Elga Labwater lineup. For more great deals on Laboratory Apparatus by Elga Labwater please browse our Elga Labwater Laboratory Apparatus page. Elga Labwater Pressure Reg Tap H2o LA512 Unit EA