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Senior Member


Tuesday, February 15th 2005, 8:10am

Designing manifold

1. Any standard guidelines for spacing between PVC T's (1") for a valve manifold using irritrol 1 " valves?
2. Reccomendations for number of valves (1") in standard box, jumbo box?
3. Preferences between threaded vs. slip on valves?


Supreme Member

Posts: 314

Location: USA


Thursday, March 3rd 2005, 5:02pm

Generally you can fit one standard valve in the 6" circular valve boxes. The jumbo boxes I believe you are talking about are the 12" rectangular boxes, and I wouldn't put more than 4 valves inside that. The spacing is really your discretion, but I would leave enough room so that maintenance on the valves isn't a pain in the rear. I would also suggest the threaded valves over the slip on, strictly because if a valve goes bad and you need to service or replace it, you're not having to cut out the slip on valve in an already cramped valve box. With the threaded you can just unscrew it.
Tony Posey
Ridge Run Landscapes


Advanced Member

Posts: 106

Location: USA


Thursday, April 7th 2005, 9:06am

Put one in a 6" box , two in a 12" box this will give you room if you need to repair later on .
Vincent Nestor
Nestor's Sprinklers & Lighting

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