CASCADE PLC - The new home of Cascade Clamps UK Ltd, Suppliers and Manufacturers of pipe fittings to the water & gas industry.
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​TWIN AIR THREE FUNCTIONS AIR VALVE


​The valve for automatic air release and air admission of pipelines - Thanks to its large cross-section and the very high ventilation speeds, the ERHARD TWIN-AIR air valve is ideal for use in larger pipe networks and guarantees safe pipe ventilation during the filling process, operational air release being in service and during the draining process. Not withstanding the high performance, the construction is compact and space-saving.

The ERHARD TWIN-AIR Air Valve has two nozzles. Air can first escape via both orifices in the pipe filling process which means high ventilation performance. Both orifices will be shut once the water level has reached the floating point of the balls. If air should however accumulate during ongoing operation, only the float ball of the small orifice will drop thus releasing the small valve until the air volume has escaped. The small orifice is being purged by a cleaning device with every switching action.
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Technical Specifications
  • Body and body cover made of ductile cast iron EN-JS 1050
  • Body inside enamelled and outside epoxy, or
  • Body inside and outside epoxy.
  • Body cover: inside and outside EKB fusion bonded epoxy• Float ball for DN50 to DN100 made of multi-chamber GRP (optional of austenitic CrNi steel 1.4571).
  • Float ball for DN150 and DN200 made of austenitic CrNi steel (1.4571).
  • Float guide and float assembly for evacuation under pressure (made of austenitic CrNi steel 1.4571).
  • Body seat made of EPDM, W270.
  • Connecting bolts made of stainless steel A4.

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  • Home
  • Bauer
  • Our products
    • Tapping and Tapping Saddles >
      • Q-Tee Tapping Saddle
      • Slimline Q-Tee
      • Hot Tapping Saddle (HTS)
      • Universal Bossed Tapping Saddle
      • Bossed Repair Clamps
      • Copper and Galv Tapping Clamps
      • Cascade PE/PVC Pipe Saddles
    • Certification and Downloads
    • Cascade Pipe Drilling & Linestopping >
      • Drilling System
      • ProDrill 45
      • ProDrill 20
      • ProDrill 26
    • Under Pressure Tee's >
      • Stainless Steel Under Pressure Tees
      • Mild Steel Tees/Hot Tap Tees
      • PE/PVC UPT's
    • Repair Clamps >
      • Stainless Steel Repair Clamps
      • Copper and Galv/Steel Repair Clamps
      • Lead Joint Repair Collar
      • PE Pipe Clamp/Coupling
      • Mini Repair Clamps
    • Couplings and Flange Adaptors >
      • Studded Flange Converters (DSC)
      • Universal Wide Couplings and Flange Adaptors
      • SupaFit Range
      • Cascade Valve Bypass/Washout Adaptor
    • End Restraint Fittings >
      • WAGA Flange Adaptors
      • WAGA Couplings
      • WAGA End Loading Fittings
      • SupaTite Range
      • P-Fix Range
      • Tied Restraint Flange Adaptors
    • Valves >
      • Telescopic Valve Spindles
      • QT-I Complete Isolation Valve
      • Ball Valves
      • Resilient Seat Gate Valve
      • Metal Seated Gate Valves
      • Standard Butterfly Valves
      • Large Butterfly Valves
      • Needle Valve
      • Flow Control Valve
      • EDRV Nozzle Check Valve
      • ERK Tilting Disk Check Valve
      • IPROCheck Axial Check Valve
      • EAK Butterfly Valve
      • Twin Air Three Functions Air Valve
      • Fire Hydrant (Fixed Stopper)
      • Hydrant type 2 (white cap) loose stopper
      • Sentry-GS-Excess-Flow-Valve
      • Sentry-GT-Thermal-Shutoff-Devices
    • Water Metering >
      • Talbot Meter Carrier
    • Meter Boxes
    • Chambers, Sections and Lids
    • Pipe and Fittings >
      • PE Fittings >
        • CasPlas PE Compression Fittings
        • Talbot Push Fit Fittings
        • Electrofusion Fittings
        • Amagrip Pushfit End Restraint
      • ProFuse Water Pipe
      • PE100 Black Potable Water Pipe
      • PE100 Water Pipe
      • PE80 Water Pipe
      • CleanPipe System
      • Barrier Pipe
      • ProFuse Gas Pipe
      • PE100 Gas Pipe
      • PE80 Gas Pipe
      • ServIFlex
      • 17.5mm gas pipe relining system
      • PE Stub Flanges
    • Dismantling Joint
    • Ductile Fittings
    • Gunmetal Ferrules
    • Plumbing and Ancillaries >
      • Isiflo
      • Nipples and Bushes
      • Cutters
      • Ratchet Spanners
      • Denso
      • Cascade Silicon Pipe Grease
      • AquaFix Wrap Repair Tape
      • Bolt & Gasket Sets
    • Heating
    • Specialist Fabrication >
      • Mild Steel Fabrication
      • Stainless Steel Fabrications
      • Ductile Fabrication
      • Fabricated-Adaptors-&-Couplings
  • About
    • Cascade Terms and Conditions
    • Privacy Statement
    • GDPR Policy
  • Services
    • Utility Products
    • Self Lay and Developer
  • Cascade Brochure
  • Contact Cascade
  • Cascade Online Shop