Page 1 of 1

air chamber to sprinkler valve

Unread postPosted: Fri May 01, 2009 5:40 pm
Author: brettdotcom14
im going to have a typical over under pneumatic with the sprinkler valve on top. 3" diameter air chamber and a 1" sprinkler valve. should i go from the 3" air chamber to a 2" then to the 1" sprinkler valve or just go from the 3" chamber to 1" all around?

Unread postPosted: Fri May 01, 2009 5:47 pm
Author: jmccalip
Well, I'm no expert, but I'd assume you would want the least amount of restriction until you reach the valve. This way the maximum amount of air reaches the valve at one time.

Unread postPosted: Fri May 01, 2009 5:49 pm
Author: Gaderelguitarist
In a 1" sprinkler valve, you're getting about 3/4" of flow. Reducing from 3" to 2" can hardly be called a restriction in this case.

Restriction is bad. Flow is good.

Unread postPosted: Fri May 01, 2009 5:50 pm
Author: brettdotcom14
i was thinking 2" too but then i thought once it went through the 1" sprinkler valve it wouldnt matter?

Unread postPosted: Fri May 01, 2009 5:54 pm
Author: Gaderelguitarist
Just think of it this way...

It take a lot longer to fit a watermelon through a straw than through a basketball hoop.

Air is matter after all. The particles need space to flow.

Unread postPosted: Fri May 01, 2009 6:49 pm
Author: brettdotcom14
would there be a huge difference using the 1" instead of the 2"?

Unread postPosted: Fri May 01, 2009 7:15 pm
Author: jmccalip
brettdotcom14 wrote:would there be a huge difference using the 1" instead of the 2"?


Nobody can tell you exactly. Why don't you just spend the extra $2-3 and make it 2"???

Unread postPosted: Fri May 01, 2009 7:29 pm
Author: brettdotcom14
where can i get a 1" m npt to a 2" slip? find me that and i will do it

Unread postPosted: Fri May 01, 2009 7:38 pm
Author: Gaderelguitarist
You'll need a 2" coupling, a 2" to 1" bushing and a 1" male adapter. Additionally a short piece of 1" pipe will be needed.

Unread postPosted: Fri May 01, 2009 8:08 pm
Author: jook13
In the question you are asking in the original post, I dont see it making a difference either way.

Do what ever makes more sense as far as money and availability of parts.