Pressure reducers and winterization

[Anon125]

The house came with an underground sprinkler system.
we had it expanded underground.
But he also installed above ground drip hoses.
do these need a pressure reducing valve?
Is it usually in the distribution box?

what does a pressure reducing valve look like

Can winterizing, blowing the water out of the system with compressed air damage the reducers or the drip feed hoses.
Thanks all

 

[WorthFlorida]

As long as there isn't too much pressure no damage will occur. A typical homeowner compressor is fine, just don't get it over 100 PSI. Depending on the type of drip irrigation and size, and the pressures your are working with determine if a reducing valve is needed. If you are using micro drip tubing they may be needed. Too much pressure will blow off the drip nozzles and press fit connections. If its the large brown color drip pipe with predrilled holes, usually not. Too many variables to consider for a simple yes or no answer.

https://store.rainbird.com/drip-low-volume/filters-valves-pressure-regulators.html

 

[Sponsor]

 

[Sylvan]

As long as there isn't too much pressure no damage will occur. A typical homeowner compressor is fine, just don't get it over 100 PSI. Depending on the type of drip irrigation and size, and the pressures your are working with determine if a reducing valve is needed. If you are using micro drip tubing they may be needed. Too much pressure will blow off the drip nozzles and press fit connections. If its the large brown color drip pipe with predrilled holes, usually not. Too many variables to consider for a simple yes or no answer.

https://store.rainbird.com/drip-low-volume/filters-valves-pressure-regulators.html

Air pressures of plastic systems should not be over 6 PSI MAX

This is why boiler /pressure vessels drainage /vent piping are tested hydrostatically not with air in the majority of cases

"Air testing" of natural gas lines is normally 3 PSI with a 5 PSI gauge

 

[WorthFlorida]

It's an irrigation system and most can handle up to 150 PSI water pressure. It the glued joints that may fail with too much pressure. Some PVC thin wall stuff for irrigation is only rated at 160 PSI. "A rainbird irrigation valve must be rated @ no less than 150 PSI".

 

[Anon125]

The toro drip feed system has little blocks inside the hose and that is where the holes are.
thanks all

 

[Anon125]

there are no glued connections. it is above ground soft plastic dripp hose
thanks every one

 

[Anon125]

As i wrote it is not an underground system.
I wrote to the hose manufacturer who says maximum 40psi
thanks everybody