Sewage Air Valve

sewage valve

Sewage grease, corrosive gases, solids, and scum in sewage combine to aggravate the maintenance problem and to reduce the reliability of pipeline’s components in wastewater force pipelines. Laminar air valve has been designed for efficient discharge and intake of air from pressurized sewage systems where confined air (gases) could threat the system’s operation. The valve’s elongated body design reduce the possibility of suspended solids or greases, debris, oils clogging the orifice or causing the mechanism to malfunction and stick. For ease of maintenance and safety of operators, the air valve is equipped with a drain plug to allow periodic flushing of sediments, grease and particles.

The Laminar Range of waste water air valves are all based on stainless-steel internal components with a float on an extended operating stem to ensure that the valve is closed before the medium reaches the sealing level. The valves offer tight sealing at pressures from 0.2 bar.

Laminar offers a comprehensive range of sewage and waste water air valves, available in stock as well as with quick lead times. Laminar range of air valves is based on the experience gained in South East Asia and the Middle East markets where pumped sewage and waste water systems are normal practice and have been for many years. The range of valves is wide and flexible to meet the needs of both site engineers and specifications.

PN10, 16

Sewage | Wastewater | Seawater


Wastewater treatment plants | Seawater desalination plants | Power plants | Industrial applications

  • Sealing system: resilient seated
  • Single-chamber & double-chamber air valves in compact design
  • Double orifice type with a large orifice for automatic ventilation of the pipeline and a smaller orifice for automatic release of air pockets during operation under pressure

  • Triple function Air Valve:

    • Large orifice to admit air during emptying the pipeline

    • Large orifice to release air during filling the pipeline

    • Small orifice to release air during normal working conditions

  • Corrosion-proof due to stainless steel inner parts and float can be of plastic or stainless steel
  • High discharge capacity up to sonic velocity due to stabilized floater
  • Safe and reliable operation even at high air-release velocities
  • All operating components are made of specially selected, corrosion-resistant materials
  • Can be mounted with isolating valve like lug-type butterfly valve with hand lever, gate valve or ball valve
  • Minimum operation pressure: 0.2 bar

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