I built something similar to this for my dad, but it's built into a toolbox to make it weather resistant and portable. To the guys who asked about backflow prevention, why would you need it if it connects to a hose bib, uses garden hose and is totally temporary and portable?
The second some dirt or mulch gets kicked over a hose, the 'above ground' argument goes bye-bye. Even a spring-loaded check valve would be better than nothing.
I built something similar to this for my dad, but it's built into a toolbox to make it weather resistant and portable. To the guys who asked about backflow prevention, why would you need it if it connects to a hose bib, uses garden hose and is totally temporary and portable?
Very nice design, I like it! You may want to run the hoses with a special connector so the sprinklers aren't stretched out in series, more like a T design so they get even pressure and flow.
The CP-075 or CP-100 valves wouldn’t be my first choice, but they may hold up okay for you. The bleed screws seem to be a bit cheap on them, so be careful.
You could probably get by fine without a backflow device, but there is always that chance of a problem. And, you shouldn’t use an atmospheric breaker upstream of your valves, but you could hook up a PVB (pressure vacuum breaker) to the manifold input. It just needs to be elevated a bit – six to twelve inches above the highest sprinkler head.
The CP-075 or CP-100 valves wouldnt be my first choice, but they may hold up okay for you. The bleed screws seem to be a bit cheap on them, so be careful.
You could probably get by fine without a backflow device, but there is always that chance of a problem. And, you shouldnt use an atmospheric breaker upstream of your valves, but you could hook up a PVB (pressure vacuum breaker) to the manifold input. It just needs to be elevated a bit six to twelve inches above the highest sprinkler head.
I think youre right about the double check route. A short length of hose connected between the double check and the manifold... Of course some double checks are larger and heavier than others, but if he went with something like the Wilkins 350 then that would great.
That was my point. A hose bibb should already have a vacuum breaker if it's properly installed.
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