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C50-SP Sewage and Wastewater Combination Air valve c/w Surge Protection


Bermad C50-SP is a high quality combination air valve for a variety of sewage and wastewater networks and operating conditions. It evacuates air during pipeline filling, allows efficient release of air and gas pockets from pressurized pipes, and enables large volume air intake in the event of network draining. The discharge mechanism incorporates a surge protection mechanism to limit water hammer during rapid discharge of air on pump start.

With its advanced aerodynamic design and double orifice, this valve provides excellent protection against air and gas accumulation and vacuum formation with improved sealing under low pressure conditions.
Features include;

  • Low pressure sealing less than 0.5m
  • Surge protection mechanism limiting surge on high air discharge
  • Straight flow body with large diameter
  • automatic orifice
  • Aerodynamic full-body kinetic shield
  • Elongated body design with non-stick
  • coating
  • Valve is opened from the top
  • 2 service ports
  • Compact, simple, robust and reliable
  • structure
  • Fully corrosion-resistant parts
  • Optional  Inflow Prevention and Drainage Valve

Maximum test pressure: 16 bar (PN16)
Operating pressure range: 0.05 – 10 bar
Operating temperature: Water up to 60°C
Body Material:Standard – Glass-reinforced plastic
Inlet sizes: DN50 (2″), DN80 (3″)
Connections: Threaded Male (DN50)  BSPT or
Flanged AS 4087 (DN50, DN80 or DN100)
Outlets: Sideways
Additional features:
Inflow Prevention (C50-IP) , Drainage valve


Sewage and wastewater pumping stations – Air relief and vacuum prevention.

Sewage and wastewater pipelines – Protection against air and gas accumulation and vacuum formation at elevations, slope change points and at road / river crossings.

Municipal and industrial wastewater treatment plants – Protection against air and gas accumulation and vacuum formation.