Air-Vacuum Relief Valve Kit includes a 1/2in. or 3/4in. Air Relief Valve, made of quality rust-proof materials, with a 6.0in. drip valve box (SEB 7XB emitter box). Use with Rain Bird XF-Series or Landscape Dripline inline emitter tubing when installation is below soil. The valve will allow air to escape the pipeline, thus preventing water hammer or blockage.
Model ID: 1172More info