TonyTurboII

Ok, I got this pic off a post I found when searching, and the person said it was on backwards. What I need to know is does the check valve go on the side with the vaccum nipple, as shown in the pic, or the other side? Also where does this go/how is it installed in relation to the TID?

snoopster76

that pic is backwards

drewstrbo2

the check valve goes on the other side

TonyTurboII

DUH! I needed to know what part was backwards. So it goes on the side opposite of the vaccum nipple? And doesent go into the TID at all?

rx7_turbo2

Yup it goes on the other side. Nope it will vent the air to atmosphere no need to plumb it back into the TID. Just test the check valve by blowing through it manualy and you will know what way it needs to be put on. It needs to vent the air but not allow air back in onder vacuum so....

snoopster76

the valve goes on the other side and it doesn't go back into the TID. it vents out to the astmophere.

TonyTurboII

Thanks dudes. Im going to try and construct it this weekend. Any opinion on rubber vs. silicone for the TID?

snoopster76

I used rubber for the connecting pieces and pvc for the 45 bend. The white pvc had the perfect ends, no cutting required and you could paint it what ever collor you desire.

rx7_turbo2

I used rubber for one reason. It was like $2 a silicone one will set you back a fortune. The rubber one will eventually wear out but you can always replace it for a couble bucks.

TonyTurboII

All I can find is a PVC check valve, would it work? Ive got to go to one more place, and if they dont have it I might be w/o a TID for awhile....

RX-7 GT

yea i went to home depot as well, and they didnt have one like the pic at all. only huge *** ones.

TonyTurboII

Up. I wanna get this thing tomorrow, someone wanna tell me if the PVC one is worth a ****?

Chris Ng

The brass checkvalve can be found in the area of the hardware store that stocks accessories for sump pumps..

If you can't find it, the PVC valves will work (The ones with either a flapper door or a plastic ball), however you do have to mount them in a manner that the valves aren't being opened by gravity.. which means you prolly need a 90 degree peice of hose..

The problem with the plastic checkvalves with the flapper doors etc is that they tend to flutter and not seal as wel as the brass valves.. this can lead to idlig problems.. you might also get some fluttering during transition between neg-pos boost (0 psi) since there will be no vacume to help keep the valve shut at that point..
that's the nice thing with the brass valves.. they have a spring to shut the valve.. you can mount them upside down if you wanted and they still won't leak..

TonyTurboII

Ok, the only brass valve I could fine has a slapper in it to, subject to gravity. Im gonna go back, and look around the sump pumps instead of plumbing.

TonyTurboII

I found a plastic one, with a spring in it. It looks pretty sturdy. The only brass ones they had were rated at 75 psi.