Valve Question

[Advanced]

I am swapping my classic valve with an Emag valveg bought second-hand). It already has the .750 on/off pin.

My again is regarding the on/off orings.

On the top on the on/off pin it has the tiny oring. Inside the hole on the valve(where the on/off assembly is inserted, there is another oring(like would be in a classic valve).

All the diagrams I've seen for retro valves only have the small oring. In Emag diagrams I do see this additional oring, sometimes called the "outer quad" and the small is called the inner quad.

The outer quad oring currently in mine is just a standard power tube spacer oring,

Are emag valves technically different than retro valves then? Should I just use this on/off assembly with both orings like this, or shove the "outer oring?

[superman]

couple different things going on in this post. not all rt style valves are machined for 2nd (outer) on/off oring.

For valves that use emag frames with emag pins (.712) you will want to use the quad oring for the inner oring.
For valves in pretty much any other situation you will want to use the standard inner oring.

The quad oring is black and has a double sealing surface where it comes in contact with the pin. It is only an inner oring, no outer quad oring exists.


The on/off you should use with a mech setup is a rt on/off with .740-.750 rt pin and 2 standard agd orings if it is machined for both, if not then just 1.

[Spider!]

While the quad o-ring has two sealing surfaces, the .712 pin really only uses the bottom sealing surface. Still, the smaller edge radius on that bottom seal is a lighter grip than the larger radius of a round o-ring.

[Jordan]

Some Emag valves are machined to accept both orings, some are not.

The only difference AFAIK is that Emag valves used a black quad oring with a short pin (.712). If you don't use a quad oring, and use a normal oring setup like any RT valve or Classic valve, you need a .750 pin.


Edit: what Superman said.

[latches109]

yes they are the same valve

[superman]

I understand that, i was referring to the cross section which is different from what should be shown in an emag.

[latches109]

The animation is correct. Read what the OP said, he has a .750 on/off pin - he should use urethane orings

[superman]

The animation is correct for the valve, but relating to itself it is incorrect. The animation is an emag and should have a .712 pin and show the cross section of a quad oring, because it is an emag.

[Advanced]

Ok so in that picture that's basically what I have, a small urethane oring and another urethane oring around the smaller oring(on top of the assembly).

Just wanted to make sure there supposed to be 2.

Thanks guys!

[tunaman5]

Ok so in that picture that's basically what I have, a small urethane oring and another urethane oring around the smaller oring(on top of the assembly).

Just wanted to make sure there supposed to be 2.

Thanks guys!

In valves that take only one oring in the on/off hole, you wont be able to insert the on/off assy if the extra oring is used. You will know right away for sure.