C900 pipe fittings are a type of connection designed specifically for high-pressure water distribution systems and are typically used in C900-standard PVC or HDPE piping systems. These fittings offer excellent sealing, compressive strength, and corrosion resistance, making them widely used in municipal water supply projects, industrial pipe networks, irrigation systems, and fire protection water systems. They are currently the preferred choice for both reliability and cost-effectiveness in plastic pressure piping systems.
About the C900 Standard
C900, established by the American Water Works Association (AWWA), is a standard for PVC pressure pipe. AWWA C900 primarily applies to PVC or HDPE pressure pipe and fitting systems with diameters ranging from 6 inches to 12 inches (150mm–300mm). Design pressure ratings typically include DR18 and DR25, and are widely used in municipal drinking water distribution and underground pipe network construction. The C900 standard ensures compatibility and safety between pipes and fittings in terms of connection, sealing, and long-term service life.
C900 pipe fittings material classification
PVC (Polyvinyl Chloride) C900 pipe fittings are made from high-strength polyvinyl chloride (PVC) and offer excellent corrosion resistance and mechanical strength. Common types include elbows, tees, reducers, sockets, blind caps, and valve fittings.
Key Features:
Lightweight and high-strength: PVC weighs only one-fifth of metal fittings, making it easy to handle and quick to install.
Corrosion- and scale-resistant: PVC is not corroded by acids, alkalis, or salts, and its smooth interior prevents deposits.
Excellent sealing performance: A rubber ring socket connection prevents water leakage and external infiltration.
Long service life: A normal service life of over 50 years is achieved with low maintenance costs.
PVC C900 pipe fittings are particularly suitable for urban drinking water systems and underground water supply projects, maintaining stable performance even under high-pressure transmission conditions.
HDPE (High Density Polyethylene) C900 fittings are renowned for their impact resistance and flexibility, making them widely used in pressure water supply and fire protection systems. Common sizes range from DN100 to DN400 and can be used with HDPE C900 pipe via hot-melt, electric-melt, or flange connections.
Key Features:
Excellent impact and tensile strength: Resistant to geological subsidence and temperature fluctuations, they resist cracking.
Excellent chemical resistance: They withstand long-term use in acids, alkalis, salts, and a variety of other chemical media.
Leak-proof connection: Hot-melt or electric-melt creates an integrated seal, ensuring zero leakage.
Environmentally friendly and recyclable: The material is environmentally friendly and recyclable, meeting sustainable development requirements.
PVC and HDPE C900 fittings each offer their own advantages; choose the appropriate type based on the project environment, pressure requirements, and budget.
Specifications and Connection Methods
C900 fittings are typically used with C900 pipe of the same standard, with a nominal pressure range of 160 psi to 305 psi. Key connection methods include:
Socket-and-spigot joints (commonly used with PVC)
Butt-fusion joints (commonly used with HDPE)
Electrofusion joints
Flanges
Common fitting types include:
Elbows: 45° and 90° elbows used to change flow direction.
Tees: Used to connect main and branch pipes.
Reducers: Connect pipes of different diameters.
Couplings: Connect two lengths of pipe of the same diameter.
End Caps: Used to seal the end of a pipe.
Main Applications
Municipal Water Supply Systems: Serves as a safe pipe network fitting for drinking water and domestic water transportation.
Fire Protection Water Supply Systems: Maintains a stable seal under high pressure.
Agricultural Irrigation and Sprinkler Systems: Provides a high-strength, corrosion-resistant water supply channel.
Industrial and Industrial Pipelines: Transports chemicals, cooling water, and process fluids.
Underground Infrastructure: Suitable for buried pipe network projects, offering strong resistance to pressure and subsidence.
Advantages of C900 Pipe Fittings
High Safety: Complies with AWWA C900 standards, ensuring stable system operation.
Easy Installation: Lightweight, versatile installation methods, and short installation cycles.
Easy Maintenance: No preservative treatment required, ensuring a long service life.
Environmentally Friendly: Both PVC and HDPE materials are recyclable, meeting modern environmental standards.
C900 pipe fittings are an indispensable component of modern water supply and drainage systems. Whether made of PVC or HDPE, they offer high strength, corrosion resistance, reliable sealing, and easy installation, meeting the high standards of various projects. Choosing high-quality C900 pipe fittings can not only ensure the long-term stable operation of the pipe network system, but also effectively reduce maintenance and replacement costs, providing safe, efficient and economical water delivery solutions for municipal, industrial and agricultural projects.
