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Air Valves
Pipeline Exhaust & Vacuum Protection
Overview & Design
Air valves exhaust accumulated air pockets in water lines and admit air into draining systems to prevent pipe collapse.
Pedagogical Rationale
Entrained air pockets reduce flow capacity and trigger pressure surges, while vacuum states can cause structural pipes to buckle inward.
Standard Industry Applications
1High points in water transmission pipelines
2Long pipeline incline peaks
3Municipal wastewater transmission loops
4Dumping manifolds protection
Category Valve Types
Automatic Air Release Valve
Float-operated small-orifice exhaust system.
Working Principle
Accumulated air forces the water level down inside the chamber. The floating ball drops, opening a small orifice to exhaust air.
Advantages
Works continuously under system pressure
Prevents air binding flow locks
Compact mechanical body
Limitations
Small discharge capacity limits bulk venting
Vulnerable to sticky slurry fluids clogging the float seat
Single function operation