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Old 03-30-2013, 01:10 PM
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RhettMan RhettMan is offline
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Slowest Closing Valves

Rainbird says their valves close slow, but of course they say that.
(I do like rainbird)

Anyway...

Toro 260
DV-100
Hunter PGV

Assuming equal and properly designed inlet pressure, laterals, heads, etc. :

which valve really closes the slowest? (during normal electrical operation (not manually bled))
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Old 03-30-2013, 01:20 PM
bcg bcg is offline
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The PGA. In fact, it closes so slow it often doesn't.
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Old 03-30-2013, 02:41 PM
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Wet_Boots Wet_Boots is offline
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I haven't seen the PGA. The old Toro two-screw-solenoid valves (series 260,250,230) could be counted to take minutes to close when you used the manual bleed to operate them.
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Old 03-30-2013, 03:18 PM
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RhettMan RhettMan is offline
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Quote:
Originally Posted by bcg View Post
The PGA. In fact, it closes so slow it often doesn't.
I've used a pga before for the reason of the advertised slow closing.
Seriously often doesnt close? I hope not.

Quote:
Originally Posted by Wet_Boots View Post
I haven't seen the PGA. The old Toro two-screw-solenoid valves (series 260,250,230) could be counted to take minutes to close when you used the manual bleed to operate them.
I've noticed this as well. ( I wouldnt be surprised I mean. I have seen 15-20 seconds though)

What about normal electrical cut-off closing ?
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Old 03-30-2013, 03:41 PM
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Wet_Boots Wet_Boots is offline
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Quote:
Originally Posted by RhettMan View Post
..........What about normal electrical cut-off closing ?
always a non-banging shut-off, but nothing like the eternity of manual bleed operation - I think they slightly altered the manual-bleed behavior in favor of speedier closing, which is good, because the originals were one valve you would never want to try to winterize by way of the bleed (valve sticks open)
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Old 03-30-2013, 05:18 PM
bcg bcg is offline
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Quote:
Originally Posted by RhettMan View Post
I've used a pga before for the reason of the advertised slow closing.
Seriously often doesnt close? I hope not.
If the pressure is not where the PGA wants it (and I'm not sure exactly where that is) for the flow it's making, it won't close. I had several 1.5" PGA's running fairly large rotor zones (35GPM or so) that I had this problem with. Rebuilt them (even though they were new), replaced a couple of them and finally put PEB's in instead. No problems with the PEB, so I only use it on larger than 1" valves now even though it's a little more expensive.
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Old 03-30-2013, 06:33 PM
Mikegyver Mikegyver is offline
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Quote:
Originally Posted by Wet_Boots View Post
I haven't seen the PGA. The old Toro two-screw-solenoid valves (series 260,250,230) could be counted to take minutes to close when you used the manual bleed to operate them.
No kidding. I replaced the guts of a 264 this week. Takes FOREVER for it to close. It usually closes right after the rotor nearest to the manifold soaks you....
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