35 Air and Vacuum Valve

(35 Series)

The Cla-Val Pacific Series 35 Air and Vacuum Valve is designed to perform two separate functions. First, it will allow large quantities of air to be exhausted from the pipeline as it is being filled with water.  When this air has been vented completely, water will enter the valve   causing the float to seal tightly against the seat to prevent water flow.  Secondly, if the line is being drained, either intentionally or as a result of pipeline breakage, the valve responds to the loss in  pressure and opens.  This allows air to re-enter the pipeline and prevents potentially damaging vacuum from developing.

Series 35 Air and Vacuum Valves should be installed at high points or at grade changes within the pipeline.  Mount the unit in the vertical on top of the pipeline with isolation valve below each valve in the event servicing is required.  A vault with adequate venting and drainage should also be provided.
Advantages include:
  • Provides High Capacity Air Venting and Air Intake
  • Stainless Steel T316 Trim Standard
  • Stainless Steel Floats Guaranteed
  • Fully Ported Valves - No Restrictions
  • Designed For Drip Tight Seal At Low Pressures