Ronno6
Lawn Addict
- Joined
- Apr 8, 2016
- Threads
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Re: MTD Yardman Transaxle Rebuild
Prior to doing this job, I read this:
https://www.linkedin.com/pulse/what-thread-sealant-use-pvc-fittings-larry-workman
I used a non-hardening compound made by Oatey, who practically wrote the book on joining
all things PVC. It is non-hardening and contains teflon. It is certified for use on plastic pipes.
As for PVC threading into brass, I have read conflicting reports.
The main objection is that fluctuations in temperature will cause the dissimilar materials to
leak due to differences in expansion/contraction.
In any event, PVC into brass is far better than brass threading into PVC.
The connection is about 1ft under grade so temp variations should not be as big of an issue as if above ground.
I will inquire at the local hardware stores to see it this has been an issue locally.
I may have to change the valve back to PVC. At least I have installed w.threaded fittings and a union
in case I need to change now or in the future.
If plastic is involved only use Teflon tape. Never anything else. This would be the problem.
Prior to doing this job, I read this:
https://www.linkedin.com/pulse/what-thread-sealant-use-pvc-fittings-larry-workman
I used a non-hardening compound made by Oatey, who practically wrote the book on joining
all things PVC. It is non-hardening and contains teflon. It is certified for use on plastic pipes.
As for PVC threading into brass, I have read conflicting reports.
The main objection is that fluctuations in temperature will cause the dissimilar materials to
leak due to differences in expansion/contraction.
In any event, PVC into brass is far better than brass threading into PVC.
The connection is about 1ft under grade so temp variations should not be as big of an issue as if above ground.
I will inquire at the local hardware stores to see it this has been an issue locally.
I may have to change the valve back to PVC. At least I have installed w.threaded fittings and a union
in case I need to change now or in the future.