Downstream pressure reducing and upstream pressure sustaining pilot operated automatic control valve (22 pages)
Summary of Contents for CSA SCF
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CSA products for waste water Combination air valve Mod. SCF...
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CSA air valve Mod. SCF Introduction This manual will provide you with the information to properly install and maintain CSA Mod. SCF waste water air valve. They are for use by personnel who are responsible for installation, operation and maintenance of CSA Air/Vacuum valves.
CSA air valve Mod. SCF 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.
Tighten the flange bolts or studs in a crisscross pattern and minimum of four stages. Due to the high capacity in terms of flow rate of SCF possible and unexpected rapid filling and transient events may cause the liquid to reach high levels inside the air valve, before stabilizing to the safety required value.
CSA air valve Mod. SCF Maintenance The combination wastewater air valve SCF is automatic in operation and requires very little maintenance. It should always be installed in a vertical position with a maximum tilt within 4°. A semi-annual visual inspection for leakage is recommended as well as a check of the O-rings on the seat (ref picture on page 7).
CSA air valve Mod. SCF Troubleshooting (ref. drawing 1 on page 7) Condition Possible Cause Corrective Action Loose flange bolting. Tighten flange bolting. Blown flange gasket. Replace flange gasket. Valve leaks at flange joint. Miss-alignment or damage to Adjust miss-alignment or repair field piping and supports.
You shall be solely responsible for determining suitability for use and in no event shall CSA Srl. be liable in this respect. CSA Srl does not guarantee resistance to corrosion, erosion, abrasion or other sources of failure, nor does CSA Srl guarantee a minimum length of service.
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