Air relief valve WW C80

gaslow-pressurefor pipelines

Description
BERMAD C80 is a combination air valve engineered for sewage and wastewater networks. It evacuates air during pipeline filling, vents trapped air and gas pockets from pressurized pipes, and admits large volumes of air when the network is drained. The elongated body and lower float reduce contact between the fluid and the upper mechanism. With an aerodynamic double-orifice design and optional Surge Protection (SP), the C80 improves protection against air/gas accumulation and vacuum formation while providing effective sealing at very low pressures.

Features & Benefits

• Straight-flow body for higher-than-usual flow rates.
• Dynamic sealing effective under low-pressure conditions (0.8 psi; 0.05 bar).
• Elongated body and lower float to prevent solids contacting operating parts.
• Two service ports (upper and lower) 1" (DN20) BSPT or NPT for back-flushing and drainage.
• Threaded side outlet (3"; DN80) for connection of Surge Protection (SP) or Inflow Prevention (IP) devices.
• Compact, simple structure with corrosion-resistant internal parts for reduced maintenance and extended service life.
• Double orifice and optional SP/IP for improved vacuum and surge performance.
• Factory approval and quality control: performance and specifications tested on a specialized test bench, including vacuum conditions.

Typical Applications

• Pumping stations: air release and vacuum prevention.
• Non‑clean water pipelines: protection against air/gas accumulation and vacuum at high points, slope changes and crossings.
• Wastewater treatment plants: air relief and protection from air/gas accumulation and vacuum formation.

Available Documentation (selected)

• C80 - Product Page (Metric)
• C80 - Product Page (Imperial)
• C80 - IOM (Installation, Operation & Maintenance)
• C80 - Spare Parts
• WW – Air Valves - Ordering Guide
• Air Valves – a guide for system designer - Engineering

Technical specifications

• Model: C80
• Series: Air Valves Series
• Body material: Ductile Iron
• Design: elongated body and elongated lower float to limit solids contact with internal mechanism
• Orifice: aerodynamic double-orifice design
• Service ports: two (upper and lower) 1" (DN20) BSPT or NPT for back-flushing and drainage
• Side outlet: threaded side outlet 3" (DN80) for Surge Protection (SP) or Inflow Prevention (IP)
• Sealing: dynamic sealing effective under low pressure (0.8 psi; 0.05 bar)
• Internal parts: fully corrosion resistant
• Optional: Surge Protection device (SP) or Inflow Prevention (IP)
• Certifications / Standards: SAI AS4883 (Australia)
• Testing: factory performance and specification testing including vacuum pressure conditions