Bermad - Model C10P - Combination Air Valve

BERMAD C10P 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 provides excellent protection against air accumulation and vacuum formation, with improved sealing in low-pressure conditions.

Specifically designed for irrigation applications.

Features & Benefits

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

Additional Features & Accessories

• Surge Protection (code SP) device: Smoother operation, preventing damage to the valve and the system. DN50-80 only.
• ֺ Inflow Prevention (code IP) device: Prevents intake of atmospheric air in cases where this could lead to damaged pumps, required re-priming, or disruption of siphons. DN50-80 only.
• Assisted Closing - the kinetic orifice is set to be partially closed (code AC) for controlled slow air relief, subsequently avoiding the possibility of a surge event during pipeline filling or column separation.
• Service Ports fitted: ¼” plug (code P) for pressure gauge connection, checkpoint, or test drain for air valve function.
• 90 degrees elbow: snapped to the outlet, only for inlet sizes DN20-25.
• Addition of Female Thread DN20 to the outlet, only for inlet sizes DN20-25.

Typical Applications

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

Inlet and Outlet Connections

Inlets:

• Male Threaded: DN20-50, Flanged DN80.

Outlets:

• DN20-25: Side Outlet, Not threaded (Optional DN20 threaded elbow - AR-DE)
• DN50-80: Side Outlet, Female threaded DN50.

Materials

• Body: Glass-reinforced Nylon
• Float Assembly: Polypropylene, Glass Reinforced Nylon.
• Elastomers: EPDM, Optional - Viton

Operational Data

• Minimum Operating Pressure: 1.5 psi; 0.1 bar.
• Maximum Operating Pressure: 175 psi; 12 bar.
• Media and Operating Temperature: Water 1-60°C.

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 the Bermad Air Flow test bench, according to EN-1074/4 standard, and refer to a Side outlet. Use Bermad Air software for optimized Sizing & Positioning of Air Valves.

Cutaway

Dimensions & Weights