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What are the temperature and pressure ratings of HDPE thread fittings?

Publish Time: 07 Dec
The temperature and pressure ratings of HDPE thread fittings can vary based on factors such as the specific grade of HDPE, the design of the fittings, and the intended application. 
Temperature Ratings:
HDPE is known for its good resistance to a wide range of temperatures. Typically, HDPE thread fittings are designed to operate within a temperature range of approximately -40°C to 60°C (-40°F to 140°F).
It's important to note that variations in temperature resistance can occur based on the specific grade of HDPE and the intended application. High-temperature applications might require special formulations or modifications.
Pressure Ratings:
The pressure rating of HDPE thread fittings depends on factors such as the wall thickness, size, and design of the fitting.
HDPE thread fittings are commonly rated for pressure ranges from 100 psi to 300 psi, but this can vary. Smaller fittings may have higher pressure ratings compared to larger fittings of the same material.
It's essential to consider the specific application and intended use when determining the appropriate pressure rating for HDPE thread fittings.
SDR (Standard Dimension Ratio):
HDPE fittings are often classified using the Standard Dimension Ratio (SDR), which is the ratio of the outside diameter to the wall thickness. The SDR is an important factor in determining the pressure rating of HDPE pipes and fittings.
Higher SDR values indicate a thicker wall and are associated with higher pressure ratings.
Industry Standards and Certifications:
HDPE thread fittings are designed and manufactured to meet industry standards and regulations. 
Some common standards for HDPE fittings include ASTM D3035, ASTM F714, and AWWA C906.
Application-Specific Considerations:
The temperature and pressure ratings can be influenced by the specific application and the type of fluid or gas being conveyed through the system.
Specialized applications, such as those involving corrosive chemicals or high-temperature environments, may require fittings with specific temperature and pressure ratings.

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