AREA OF APPLICATIONS
The ‘IT’ non-slam check valve prevents back flow while minimising the water hammer effect during the valve’s closure.
PRINCIPLE OF OPERATION
The ‘IT’ non-slam check valve: –
– gradually opens when the pump starts running.
– gradually closes at a speed controlled by the valve’s speed control orifice.
– while closing, gradually reduces the flow through the valve
– utilises a spring to ensure a valve closed position.
– can be installed in a horizontal or vertical position.
LONG LIFE, LOW MAINTENANCE
The ‘IT’ non-slam check valve is made from SS for all moving surfaces to minimize corrosion and prevent scale buildup. The valve’s shuttle is suspended on Vesconite bushes.
This material composition provides excellent support and prevents scale buildup which prevents the valve from jamming.
It is estimated that the ‘IT’ non-slam check valve will need attention every 2-3 years, depending of the water quality.
SPRING LOADED SHUTTLE
The ‘IT’ non-slam check valve’s spring maintains a closed valve position when the valve’s upstream is empty. The spring also assists the closing function on reverse flow conditions.
The ‘IT’ non-slam check valve speed is determined by the speed control orifice. Decreasing the orifice size slows down the closing speed and vice versa.
The ‘IT’ non-slam check valve face to face dimension could be increased if requested by the client.
MATERIALS & SPECIFICATIONS
Contact the manufacturer or distributors for details.
DIMENSIONS & RATING
25NB (1”) – 600NB (24”)
10 bar (147 psi) – 250 bar (3675 psi)
Flanges – SABS 1123, BS4504, BS10, ASME B16.34
Couplings – Tapered shoulders and other pipe couplings