ventomat air valves
ventomat air valves
(OP)
Hi,
does anyone have any experience of using the ventomat air valves as a surge protection system, instead of using the standard surge vessel and compressor etc? All of the information I have been able to find so far is supplied by ventomat themselves and I was hoping to get some independent verification that the units work as claimed.
does anyone have any experience of using the ventomat air valves as a surge protection system, instead of using the standard surge vessel and compressor etc? All of the information I have been able to find so far is supplied by ventomat themselves and I was hoping to get some independent verification that the units work as claimed.





RE: ventomat air valves
RE: ventomat air valves
You need to do the transient analysis. Obviously the Ventomat valve will not do anything if the pipeline pressure does not fall below atmospheric.
The non slam slow closure characteristics also prevent transients during pipeline filling. This can be a problem on filling long pipelines.
As Ccor notes allowing air into a potable water pipeline is a potential source of pollution and may not be permitted as a solution. In such cases I have installed the valves on riser pipes above ground in a valve house with screened ventilators.
There are other slow closure non slam air valves on the market. Ventomat is generally recognised as a good product. .
RE: ventomat air valves
Also, for clarification, obviously as noted above the use of non slam air valves is only an option if the transient analysis shows the pressure to fall below atmospheric. In this case you should also examine other options for transient suppression to maintain positive pressures. I generally consider allowing air into the pipeline as a last resort solution.