Hunter I20

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Matthew

Active Member

Posts: 6

Saturday, April 9th 2005, 6:22pm

I have a 1/2 acre filled with I-20 Stainless Steel heads,no problems. Also, great nozzle selection...

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RidgeRun05

Supreme Member

Posts: 314

Location: USA

Sunday, April 10th 2005, 11:00am

I would go with the I-20 heads if you have the pressure, unless you are really concerned with budget. In my opinion they are more durable than the PGP heads. Good Luck

Tony Posey
Ridge Run Landscapes

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Robbies

Senior Member

Posts: 32

Location: USA

Sunday, April 10th 2005, 3:35pm

I would have to dissagree with ....., I use them in my system at 50psi and no leak and no problems

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TMC2004

Senior Member

Posts: 38

Thursday, April 14th 2005, 5:28pm

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by RidgeRun05
 I would go with the I-20 heads if you have the pressure, unless you are really concerned with budget. In my opinion they are more durable than the PGP heads. Good Luck
<hr height="1" noshade id="quote"></blockquote id="quote">

why would the I -20's use anymore pressure than anyother rotor. rainbirds and other manufacters show that the rotors are rated for 30psi +. I guess I dont understand what you mean. So far ive calculated my pressure loss through my water meter, Back flow preventer, house and irrigation maninlines,control valves, sprinkler heads, and laterals. Ive come up with 44 psi of pressure loss. My static pressure from my hose bib runs 48 -52 psi. Will i have a problem running I-20's?

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Wet_Boots

Supreme Member

Posts: 4,102

Location: Metro NYC

Thursday, April 14th 2005, 6:26pm

Go back and recalculate. If you have a flow loss of 44 psi, and a static supply pressure of 50 psi, that works out to 6 psi (six, count 'em, six) at the sprinkler heads. You might consider getting another hobby and leaving this job for a pro.

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TMC2004

Senior Member

Posts: 38

Thursday, April 14th 2005, 6:41pm

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Wet_Boots
 Go back and recalculate. If you have a flow loss of 44 psi, and a static supply pressure of 50 psi, that works out to 6 psi (six, count 'em, six) at the sprinkler heads. You might consider getting another hobby and leaving this job for a pro.
<hr height="1" noshade id="quote"></blockquote id="quote">

No, thats 44psi of total pressure loss, with the sprinkler heads included. The 6 psi you mentioned, means I have 6 more psi to give in total pressure loss, as long as i dont go over the 50 psi the system will work. The pressure loss without the sprinkler heads included in my calculations would only be 14 psi. Please no need to be rude, I come to learn just like everyone else.

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Wet_Boots

Supreme Member

Posts: 4,102

Location: Metro NYC

Thursday, April 14th 2005, 7:42pm

No harm, no foul, but if you want useful advice, think before you post. There are no mind readers here. Sprinkler heads don't figure into pressure loss calculations. The pressure at the base of the sprinkler head is your calculation's end result. You will obtain no functional advantage with I20 heads at 30 psi, so stick with PGP's. When you get to the 30 psi mark, head performance suffers, with an uneven spread of water. This is a point where you could consider Rainbird heads, with their Rain Curtain nozzles. Less distance, possibly, but a better spread of water.

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