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Bermad Model C10 - Combination Air Valve

BERMAD C10 is a high quality combination air valve for a variety of irrigation networks and operating conditions. It evacuates air during pipeline filling, allows efficient release of air pockets from pressurized pipes, and enables large volume air intake in the event of network draining. With its advanced aerodynamic design, double orifice and Surge Protection device (optional), this valve, this valve provides excellent protection against air accumulation and vacuum formation, with improved sealing in low pressure conditions. Specifically designed for irrigation applications.


Features and Benefits

  • Sֺֺtraight flow body with large diameter automatic orifice: Higher than usual flow rates.
  • Aֺֺerodynamic full-body kinetic shield: Prevents premature closing without disturbing air intake or discharge.
  • Dֺֺynamic sealing: Prevents leakage under low pressure conditions (1.5 psi; 0.1 bar).
  • Cֺֺompact, simple and reliable structure whose parts are fully corrosion, chemical and fertilizer resistant: Lower maintenance and increased life span.
  • Dֺֺesign in compliance with functional standards.
  • Fֺֺactory approval and Quality Control: Performance and specification tested and measured with specialized test bench, including vacuum pressure conditions.
  • Fֺֺield proven designed for use in irrigation applications with water quality such as river water, channel water, dam water or treated effluent with high reliability.

Typical Applications

  • Mֺֺain Irrigation Networks: Protection against air accumulation and vacuum formation downstream of pumps, along supply lines and at elevations in main irrigation networks.
  • Iֺֺrrigation Control Heads: Protection against air accumulation and vacuum formation at filtration and fertilization stations and downstream of main control valves.
  • Iֺֺnfield Systems: Protection against air accumulation and vacuum formation in proximity to water meters and automatic regulators.
  • Lֺֺandscape Irrigation: Protection against air accumulation and vacuum formation.
  • Pֺֺumping stations: Maximising pumping efficiency, priming capabilities and reducing the possibility of pressure surges during power failure modes.

Additional Features & Accessories

  • Sֺֺurge Protection (code SP) device: Smoother operation, preventing damage to the valve and the system.
  • Iֺֺnflow Prevention (code IP): Prevents intake of atmospheric air in cases where this could lead to damaged pumps, required re-priming, or disruption of siphons.
  • Sֺֺervice Ports fitted: 1/8”; DN3 or ¼”; DN6 plug for pressure gauge connection, check point or test drain for air valve function.
  • Tֺֺest point (code T)
  • Eֺֺxtension with downwards outlet, only for inlet sizes 2-3”; DN50-80.

Inlet and Outlet Connections

  • Iֺֺnlets: male threaded ¾-2”; DN20-50, Flanged 2-3”; DN50-80
  • Oֺֺutlets: Sideways, 2”; DN50 female threaded only for inlet sizes 2-3”; DN50-80

Operational Data

  • Pֺֺressure Rating: 175 psi; ISO PN10 or ISO PN12
  • Mֺֺinimum operating pressure: 1.5 psi; 0.1 bar
  • Mֺֺaximum operating pressure: 150 psi; 10 bar, 175 psi; 12 bar
  • Mֺֺedia and operating temperature: Water, 33-140°F; 1-60°C


  • Bֺֺody: Glass-reinforced Nylon
  • Fֺֺloat Assembly: Polypropylene, Glass Reinforced Nylon.
  • Eֺֺlastomers: EPDM, Optional - Viton

Orifice Specifications

Air Flow Performance Charts

Air Relief and Intake

(Pipeline Filling, Draining and Vacuum Conditions)

Air Release

(Pressurized Operation)

Air relief and intake charts are based on actual measurements, measured in Bermad Air Flow test bench, according to EN-1074/4 standard and refer to Side outlet. Use Bermad Air software for optimized Sizing & Positioning of Air Valves.


Dimensions & Weights

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Engineering Data*
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Product code

Bermad Model C10 - Combination Air Valve

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