The setting speed depends on the grade of cement you have After a joint is assembled using solvent cement, the cement must be allowed to properly “cure” before the piping system is pressurized You need that when you are joining big pipe, hence heavy duty.
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For pipe sizes 2 inches (50 mm) and larger, a 10 to 15° chamfer of 3/32 inch (2.38 mm) is recommended
Wipe loose debris and moisture from the fitting socket and pipe end with a clean, dry rag
Moisture can slow the curing process, and debris can interrupt the pipe and fitting connection. The ideal temperature for applying pvc glue is usually between 60°f and 90°f (15°c to 32°c) Below this range, the glue may not cure properly, leading to weak joints. Emperatures below 40°f for pipe 2 in size and larger, however the temperature of the system must be raised to 40°f or higher and allowed to cure per the rantees or warranties, express or implied, including any implied warranties of merchantabilit
Below is our recommended initial set schedule and joint cure schedule for piping when using spears® pvc and cpvc low voc cements The initial set schedule table uses ambient temperature ranges and pipe diameter sizes to approximate the waiting time needed after applying pipe glue before handling new joints, fittings and valves. The pipe size, socket fit, ambient temperature, relative humidity, solvent cement used and the system operating pressure should all be considered when determining set up/cure times.