CSA air valve Mod. SCF
4
Description
The CSA SCF combination wastewater air valve is designed to allow the entrance of large volumes
of air in case of negative pressure conditions, caused for example by pump failure, burst, draining,
and the discharge of large volumes during filling. During working conditions, the air release system
will purge our air pockets accumulating inside the valve.
This type of air valve should not be considered as relief for shock conditions and water hammer
events, which develop elsewhere in the system, for which other and different CSA models and
solutions are available.
The maximum and minimum pressure are stated in the order and according to technical literature.
In general, we recommend to ensure at least 0,3 bar acting on the air valve drain port to ensure the
perfect sealing during working conditions.
Handling and Storage
Lifting the valve improperly may damage it. Lift the valve with slings, chains or cables fastened
around the valve body, or fastened to eyebolts if present or bolts or rods through bolt holes in the
flanges. If installation will be delayed, place valve indoors in secure, weather tight storage. If
temporary outside storage is unavoidable, make sure a vermin proof rain cover is secured
around/over the valve to keep off rain and mud. Skid and set the assembly on a flat, solid, and well
drained surface for protection from ground moisture, runoff and pooled rain water. Do not leave the
valve exposed to high humidity and excessive temperature conditions.
Fusion/Powder Coated Valves
Personnel involved in the installation or maintenance of valves should be constantly alert to
possible damages caused by an improper handling of the valve.
Valves with fusion/powder coated exterior paint require flat washers to be installed under the
flange nuts when installing the valve to the pipeline flange to prevent the paint from cracking or
chipping.
