SCF-U
The model is a complete assembly including the CSA high quality single chamber wastewater air valve SCF 2", also available with the anti-surge non slam feature, the main stand pipe and a sectioning device which make it suitable for buried underground installation without the need of any chambers, therefore reducing installation costs. The air valve evacuates air during pipeline filling, allows release of air pockets from pressurized pipelines, and admits large volume of air in the event of pipe draining/burst, to prevent vacuum and negative pressure conditions. Maintenance can be carried out from the top even when the system is under pressure, thanks to the built in sectioning device, and a drain on the bottom of the pipe will prevent accumulation of water during operation.
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Air valve body in ductile cast iron GJS 450-10.
Stand pipe in PVC.
Air release system in stainless steel.
Floats in stainless steel.
Seat in stainless steel.
Painting with fluidized bed technology RAL 5005.
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Flanges: different sizes.
Flanges standard: EN 1092/2 or ANSI.
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Pressure range: 10-16 bar.
Minimum working pressure: 0.2 bar.
Treated water maximum 60°C, higher temperature on request.
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Design and testing according to EN 1074.
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SCF SUB
The water tight CSA SUB system has been designed for the air flow conveyance through a threaded exhaust elbow, mainly used for locations exposed to the risk of flooding and whenever the spray effect during closures and possible leakage through the air valve can’t be tolerated. The regulation device SUB is also available as a separate component applicable to any existing CSA air valves except for the EO series. User is advised that, when using SUB model, the air capacity is likely be reduced, compared to the standard version is going to be assembled on, due to the increased head losses. The resulting air flow charts are listed in the technical data sheet.
SCF EO
The CSA EO system, designed to avoid under any circumstances the air entrance back to the pipeline, only allows the exhaust of large volumes of air during pipe filling and the discharge of air pockets in working conditions. The unit regulation device EO, whose opening differential pressure can be adjusted on request, is also available as a separate sub kit applicable to any existing CSA air valves except for the anti-water hammer AS series. User is advised that by choosing EO model, in case of pipe draining, burst and pump failure the system won’t be protected against negative pressure conditions.
SCF IO
The CSA IO system, designed to avoid under any circumstances the air outflow, only allows the entrance of large volumes of air during pipe draining and burst and possibly in case of pump failure. The unit regulation device IO, whose opening differential pressure can be adjusted on request, is also available as a separate sub kit applicable to any existing CSA air valves except for the anti-water hammer AS series . User is advised that, by choosing IO model, in case of pipe filling air won’t be exhausted with the risk of problems for the entire system.