FAQs
1. What is UPVC Material ?
Unplasticized polyvinyl chloride (uPVC) is a rigid thermoplastic used for pipes and fittings. It contains no plasticizers, giving it high stiffness, chemical resistance, and dimensional stability for cold-water.
2. How do I cut and prepare uPVC pipe for joining?
Use a fine-toothed saw or pipe cutter, deburr the cut edge, chamfer the spigot slightly, and clean both surfaces. For solvent joints, apply primer if required, then cement, and assemble within the pot life.
3. What is uPVC Plumbing pipe?
uPVC (Unplasticized Polyvinyl Chloride) pipe is a rigid thermoplastic pipe used for cold water distribution, plumbing systems, irrigation, and industrial fluid handling due to its corrosion resistance and long service life.
4. Which standards govern uPVC pressure pipes?
uPVC plumbing pipes are manufactured according to ASTM D1785, which specifies dimensions, pressure ratings, and material requirements for Schedule 40, 80, and 120 pipes.
5. Which standards apply to uPVC fittings?
uPVC pressure fittings are manufactured according to:
ASTM D2466 – Schedule 40 fittings
ASTM D2467 – Schedule 80 fittings
These standards define dimensions, tolerances, pressure ratings, and performance requirements.
6. What sizes are available in ASTM D1785 pipes?
Typical sizes range from:
½ inch (15 mm) to 24 inch (600 mm) depending on the manufacturer and application.
7. What joining method is used for uPVC pipes and fittings?
The most common joining method is Solvent Cement Welding, which chemically fuses the pipe and fitting to create a permanent leak-proof joint.
8. What is the temperature limit for uPVC pipes?
uPVC pipes are generally recommended for cold water applications up to approximately 60°C.
9. What is the difference between Schedule 40 and Schedule 80 pipes?
Wall Thickness is Standard for Schedule 40 and Thicker for Schedule 80
Pressure Rating is Medium for Schedule 40 and Higher for Schedule 80
Weight is Lighter for Schedule 40 and Heavier for Schedule 80
Schedule 40 is for Domestic plumbing and Schedule 80 is for Industrial / high pressure application
_Schedule 80 pipes provide greater pressure handling capacity due to thicker walls._
10. What testing is required for ASTM uPVC pipes?
Typical quality tests include:
- Hydrostatic pressure test
- Impact resistance test
- Dimensional inspection
- Burst pressure test
- Material density test