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Bulkhead for HW Holding Tank?

Car_Wash_Guy

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I have the usual 1" black PVC ones. They usually start leaking after a while. Does anyone have a better solution? I've seen some stainless ones on Zoro and Grainer just wasn't sure if that's the way I should go?
 

cantbreak80

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Maybe the problem is with the gasket material?

EPDM vs FPM

 

MEP001

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Where do they leak? It's pretty easy to split plastic fittings by overtightening or hanging too much weight off them.
 

Car_Wash_Guy

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Yeah this one cracked from me over tightening it. Do you guys use Teflon tape, dope, both or just one?
 

cantbreak80

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Spears Manufacturing offers this for their threaded connections:
"Use a quality grade of thread sealant approved for plastics, such as Spears Blue 75.
CAUTION: Some sealant compound chemicals may cause stress cracking. 1 to 2 turns beyond finger tight is generally sufficient for plastic threaded connections. Do not over tighten."

In the past I've used 2 to 3 wraps of Teflon tape and a light coat of silicone...with cure time being the downside.
Now I follow Spears suggestions I've had no real issues.
 
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