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Old 10-02-2013, 07:17 PM
jbell36 jbell36 is online now
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MP Rotators: Check Valves vs Flow Control

I know you are supposed to use the spray bodies with the check valves in them for the MP's, but I was talking to a guy who installs regular hunter spray bodies with the MP nozzles and just installs a valve with flow control on it to control pressure...does this actually work or is this completely wrong?

I have also tried to adjust the radius on MP nozzles that were in regular spray bodies, no check valve, and they didn't seem to decrease at all...does the non check valve body have something to do with that?
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Old 10-02-2013, 08:25 PM
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DanaMac DanaMac is online now
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Quote:
Originally Posted by jbell36 View Post
I know you are supposed to use the spray bodies with the check valves in them for the MP's, but I was talking to a guy who installs regular hunter spray bodies with the MP nozzles and just installs a valve with flow control on it to control pressure...does this actually work or is this completely wrong?

I have also tried to adjust the radius on MP nozzles that were in regular spray bodies, no check valve, and they didn't seem to decrease at all...does the non check valve body have something to do with that?
The check valve is not needed. Pressure regulating stem would be better. We still use regular heads without CV or PRS and all works fine.
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Old 10-02-2013, 11:02 PM
SoCalLandscapeMgmt SoCalLandscapeMgmt is offline
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You want the bodies with the in stem pressure regulator. Both Rain Bird and Hunter sell one. You can run them without the PRS and have no issues but I find that on the Rain Bird rotary nozzles you are better off with the PRS body.
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Old 10-03-2013, 07:48 AM
ArTurf ArTurf is offline
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Your pressure may determine if you need to use pressure regualted heads. With higher pressures it may be hard to reduce radius. If the pressure is higher I'll use regulated heads. I'm a fan of check valve heads to prevent low head drainage & wet spots.
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Old 10-28-2013, 02:00 AM
bob92553 bob92553 is offline
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If you want to control the pressure the right way. You can buy a pressure regulator for the valve. Rainbird has one that goes in between the solenoid and the valve.
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Old 10-28-2013, 09:07 AM
Kiril Kiril is offline
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I use checks on all heads, and PRS on most as well. The only time you wouldn't want to use a PRS would be if your nozzle pressure is already at or below your target nozzle pressure, or if you are trying to squeeze a little extra radius out of a bad design.
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