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Water heater power vent ABS pipe gluing cure time and temperature

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Mike says:
October 15, 2011 at 11:19 am
 
I have a water heater that is approx 15 years old, works fine. ABS use to direct vent to outside. pipe has cracked at the collar of the 90 degree connection. I was just going to replace it but found out that there was recently a building code change in my area requiring PVC and 656 glue.
If i choose to use ABS is there a time i should let the glue cure for before restarting the water heater?
 
Thanks,
Mike
asked in Gas Water Heater by darekrudy (21,730 points)
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1 Answer

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Hi Mike,
Make sure that you use a cement designed for the type of ABS pipe you’re using for this water heater power vent. Oatey is a popular brand and they recommend to wait 15 minutes for good handling strength and 2 hours cure time at temperatures above 60ºF before hydrostatic pressure testing up to 180 psi (which you’re most likely not going to perform).
 
Longer cure times may be required at temperatures below 60ºF or with pipe diameters over 3”. Applying extra heat / activating your water heater would only accelerate curing process, so that 15 minutes recommendation (unless otherwise specified on your particular cement brand container) should be sufficient.
answered by darekrudy (21,730 points)
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