air chamber to sprinkler valve

[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?

[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.

[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.

[brettdotcom14]

i was thinking 2" too but then i thought once it went through the 1" sprinkler valve it wouldnt matter?

[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.

[brettdotcom14]

would there be a huge difference using the 1" instead of the 2"?

[jmccalip]

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"???

[brettdotcom14]

where can i get a 1" m npt to a 2" slip? find me that and i will do it

[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.

[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.