4″ Pressure Straight Connectors

Join 4″ pressure pipe securely in high-flow pond systems. 4″ Pressure Straight Connectors (PVC-U) are solvent weld couplers designed to connect two lengths of 4″ rigid pressure pipe in pump-fed installations.

When you’re working with 4″ pipe, you’re typically handling serious water movement – bottom drains, drum filters or large return lines. These connectors keep the line strong and watertight.

Why they’re a dependable choice

• Made for 4″ pressure PVC-U pipe
• Solvent weld sockets for a permanent, secure joint
• Suitable for pump-fed systems under pressure
• Ideal for large-diameter, high-flow pipework

Where they fit in your system

Typical uses include:

• Extending a 4″ bottom drain line
• Joining pipe sections between a drum filter and pump
• Repairing a cut or damaged section of 4″ pressure pipe

Always use pressure-rated fittings on pumped systems. Standard waste fittings are not designed to cope with operating pressure.

Installation notes

• Clean both pipe ends and the socket thoroughly with PVC pipe cleaner
• Apply suitable solvent cement for pressure PVC-U
• Insert fully with a slight twist and hold briefly
• Allow full curing time before restarting the pump

Work in a well-ventilated area and follow adhesive safety instructions carefully.

Large pipework needs strong, permanent joins. Glue them correctly once and your 4″ pressure line stays secure and leak-free.