Dual Slurry Air Release Valve
From Dual Valves
Dual Valve's Vacuum Valve's function is to automatically exhaust large volumes of air from the system when it is being filled and also to allow air to re-enter the pipe line when being emptied. The orifice size is generally the same size as the valve inlet and outlet. In Operation, when the system is filled, the fluid lifts the ball until it closes the orifice. The orifice will remain closed until the system is emptied. Air may enter the valve and displace the fluid while the system is in operation, however, internal pressure will continue to hold the valve closed. The valve will not re-open until the system pressure drops to near atmospheric pressure and the ball is no longer buoyant.
Features
- No blocking or leakage.
- No sticking due to rotating ball.
- Linatex secondary seal for positive seal.
- Fabricated and can be repaired in line.
- Self cleaning ball action.
Product Specification
- Valve housing is fabricated from carbon steel or stainless steel (304 or 316).
- Valve housing can be epoxy or copon coated.
- Valve housing can be natural rubber lined. A Range of elastomer grades are available for corrosive duties.
- Guided urethane floating ball, solid urethane or hollow stainless steel for high pressure.
- The seat is made of 304 stainless steel with a linatex rubber secondary seat for low pressure sealing and for sealing in slurry.
- Flanges are typically made of carbon steel or stainless steel and drilled to customer requirements.
- Working pressure standards are 10 up to 100 bar.
- Operating temperatures to 80°C. Higher conditions are possible if the valve is constructed from suitable materials.
