Search results
Results from the WOW.Com Content Network
Typical maximum operating temperatures for common plastic pipe materials are indicated below. Note that working pressure varies with type of material and schedule (wall thickness).
This technical note is intended to provide general information about minimum and maximum installation and operating temperatures for the listed plastic pipe and fitting materials in non-pressure applications.
In general, the maximum operating temperature of PVC can range from 60°C (140°F) to 95°C (203°F) depending on the specific formulation and application requirements.
Simply put, the maximum operating reference temperature of a PVC pipe is 140°F (60°C). This temperature makes PVC an ideal material used to transport a variety of cold materials, such as water and sewage, both domestically and industrially.
Generally, PVC pipes have a maximum recommended operating temperature of around 140°F (60°C). Exceeding this temperature threshold can lead to detrimental effects on the pipe's performance and structural integrity.
A good rule of thumb in design of PVC pipe and conduit systems is to allow length variation for every 100 feet of pipe for each 10°F 3/8” change in temperature. (This rule is independent of pipe size.) Table 1 can also be used to determine the effects of temperature changes on the length of PVC pipe and conduit.
The design properties of PVC pipe are established at 73°F (PVC pipe’s reference temperature). As temperatures decrease, properties change as follows: Tensile strength and modulus of elasticity increase, so PVC pipe’s ability to withstand internal pressure and external loads improves.
Maximum Service Temperature. PVC-U and PVC-M pressure pipes are suitable for use at service temperatures up to 50°C. For PVC-O pipes, the maximum continuous operating temperature should be limited to 45°C. Note that for all pipes conveying drinking water, compliance with the cold water requirements of AS/NZS 4020 is only valid up to 40°C and ...
Even so, the most recommended upper limit is 80 ℃. Any more beyond this temperature means that the PVC pipe might be at risk of damage and losing its structure.
Example - Higher Temperature and Reduced Strength. If the operating pressure for a 6" Schedule 80 CPVC pipe is 167 psi, the maximum operating pressure at 150 oF (66 oC) is reduced to. (167 psi) 0.5. = 83.5 psi.