Purchase Specification
            Model No. 36WW
            WASTE WATER SERVICE COMBINATION AIR VALVE
            1", 2", 3", 4" NPT
            
            Installation
            
            The Model 36WW Combination Air Valve should be installed at high points and grade changes within the pipeline.
            Mount the unit in the vertical position on top of the pipeline with an isolation valve installed below each valve in the event servicing is required.  A vault with adequate venting and drainage should also be provided.
            For regular cleaning to keep sewage equipment in good working condition use the optional customer installed BWKT Backwash Kit with back flushing hose and quick disconnect couplings.
            
            
            
            Description
            
            The combination air valve shall combine the operating features of both an air and vacuum valve and an air release valve in one housing.  The air and vacuum valve portion shall automatically exhaust large quantities of air during the filling of the pipeline and automatically allow air to reenter the pipeline when the internal pressure of the pipeline approaches a negative value due to column separation, draining of the pipeline, or other emergency.  The air release valve portion shall automatically release small amounts of air from the pipeline while it is under pressure.
            The inlet and outlet of the valve shall have the same cross-section area.  The float shall be guided by a stainless steel guide shaft and seat drip-tight against a synthetic rubber seal.
            The float shall be of all stainless steel construction and capable of withstanding maximum system surge        pressure without failure. The body and cover shall be concentrically located and of cast iron and the valve i
            nternal parts shall be of stainless steel or Buna-N_ rubber.
            
            
            Material Specification
            
            
            Valve Size:				
            Main Valve Body and Cover:
            Main Valve Trim:
            End Detail:
            Pressure Rating:
            Temperature Range:
            Rubber Material:
            Desired Options:
            
            The Combination Air Release and Vacuum Valve shall be Model 36WW from Cla-Val Co., Newport Beach, CA, U.S.A.