Automatic relief valve C50 series

airgasfor vacuum

Overview
BERMAD C50-SP-P is a combination air valve engineered for sewage and wastewater networks. It evacuates air during pipeline filling, vents air and gas pockets under pressure, and admits large volumes of air when the network drains. The product integrates a double orifice and a kinetic Surge Protection device and is designed to reduce contact between solids and moving parts while maintaining sealing at very low pressures.

Key features

• Straight-flow body for higher-than-usual flow rates.
• Elongated body design prevents solids from contacting the valve's operating parts.
• Surge Protection: kinetic orifice partially closes during the second stage of air relief to reduce damage from transient events and extend maintenance intervals.
• Dynamic sealing prevents leakage down to 0.8 psi (0.05 bar).
• Two service ports: upper 3/4" (DN20 BSPT) and lower 1" (DN25 BSPT) for backflushing and drainage.
• Compact, simple construction with fully corrosion-resistant internal parts for reduced maintenance.
• Material: glass-reinforced nylon options available.

Typical Applications

• Pumping stations: air relief, surge mitigation and vacuum prevention.
• Non-potable and sewage pipelines: protection at high points, slope changes and crossings to prevent air/gas accumulation and vacuum formation.
• Wastewater treatment plants: air removal and prevention of gas accumulation and vacuum conditions.

Certifications and quality control
Certified to NSF/ANSI/CAN 61 and NSF/ANSI 372 where applicable. Performance and specifications are factory tested on a dedicated test bench, including vacuum-pressure conditions.

Technical specifications

• Model: C50-SP-P
• Series: Air Valves Series
• Brand: BERMAD
• Material: Glass-reinforced nylon
• Pressure rating: PN10 / 150 PSI
• Orifice: Double orifice with Surge Protection kinetic orifice
• Sealing: Dynamic sealing effective down to 0.8 psi (0.05 bar)
• Service ports: Upper 3/4" (DN20 BSPT), Lower 1" (DN25 BSPT)
• Construction: Straight-flow body; elongated body to avoid solids contact
• Internal parts: Fully corrosion resistant
• Certifications: NSF/ANSI/CAN 61; NSF/ANSI 372
• Tests: Factory performance tests including vacuum conditions
• Intended segments: Waterworks, Irrigation, Sewage
• Page barcode / internal ID: 45318