Spin down filter problems

[chaoticfaith]

So I have been battling with my spin down filter for about 2 weeks now. It had been in for about 7 years. I went down to wash some baby clothes because my son had just been born. As I walked into the laundry room I heard water leaking. I rushed over to see my spin down filter leaking water. I shut the water off and washed clothes else where knowing I didn't have time to fix it yet.

I went out and collected the correct parts to replace everything and went about fixing it.

Since then the spin down filter keeps breaking the glue by thread (1" by 3/4). I have went out and replaced the schedule 40 with schedule 80 and it has lasted about a week now, then cracked that one last night.

I have checked pressures on the pressure tank and they are set at 48 to turn on and 74 to turn off.

When tightening this I have been hand tightening the "in" side and holding the "outside" with a crescent wrench while tightening the nipple on the outside of the filter.

I have checked the glue we are using and its rated at 0-100 degrees. Figured I would throw that in since I live in Alaska.

Anything would help. Im stumped!

 

[frodo]

can you post a picture of the problem ?

what is the pipe that is attached to the filter ?

pvc, cpvc ? are you using pipe dope on threads ?

what glue are you using ?

 

[chaoticfaith]

I have switch the pipe from steel to copper. The spin down filter is CPVC while the glue by thread is PVC I believe. I am using blue monster tape and glue and rectorseal pipe dope.

I've done a bit more research and now know that 74 psi is a little high for the pressure pump but not high enough to be causing my problems. I will fix that this evening and go from there.

 

[frodo]

cpvc needs cpvc glue
pvc needs pvc glue
you can not glue cpvc to pvc
you must use primer with your glue
if you have a pump present, the vibration will shake the pvc and your threaded joits will eventually break

you need vibration isolation between pump and equipment


2nd picture close up...do i see the oring sticking out of the fitting ?

the nut is to tight

 

[Debo22]

Never thread metal into a pvc female adapter, always use pvc male adapter and female copper, brass, or galvanized.

 

[KULTULZ]

If that is a RUSCO COLD WATER SPIN DOWN, the body is PVC,

 

[SHEPLMBR]

i have switch the pipe from steel to copper. The spin down filter is cpvc while the glue by thread is pvc i believe. I am using blue monster tape and glue and rectorseal pipe dope.

I've done a bit more research and now know that 74 psi is a little high for the pressure pump but not high enough to be causing my problems. I will fix that this evening and go from there.

cpvc and pvc cannot be glued together