riva dry pipe question

[cattledog]

trying to help a friend out with superjet, does anybody know the size of riva dry pipe coupler and does it use o rings like the the speedwerx dry pipe, the coupler is smaller than b pipe coupler which is 4 inch

 

[QuickMick]

Yes the Riva dry pipe uses a coupler thats 3 1/2" ID. and it uses a O ring.

put a good layer of high heat silicone on where the O ring goes. then more silicone.
Put the coupler on the end of the pipe. with your finger apply a bead of silicone to the coupler where it meets the pipe in the ID.. then slide the coupler on..
The high heat keeps the heat away fromthe coupler and makes it last longer.

 

[AdamOntario]

http://www.x-h2o.com/threads/36902