BA66 & BA77 Plastic Pipe Fittings

Buying Guide for BA66 & BA77 Plastic Pipe Fittings

Selecting the right connection system for pressurized plastic piping is crucial for preventing future leaks—especially in underground installations, where any necessary repairs or remedial work can be very costly. The BA66 and BA77 series of plastic pipe fittings offer top-tier mechanical jointing and are specifically designed for PE and PEM pipes used in potable water supply and distribution systems.

Advantages of mechanical brass fittings

Brass fittings offer several practical and technical benefits compared to simpler plastic alternatives:

• High mechanical strength: The solid brass construction withstands ground pressure, tensile forces, and vibrations without deforming.
• Tight, pull-resistant connection: The internal compression ring and sealing design grip the pipe firmly, creating a secure, leak-proof joint capable of withstanding operating pressure.
• Reusable design: The fittings can be disassembled and reassembled as needed, facilitating service, maintenance, or future system modifications.
• Versatile thread range: The product line includes standardized R-threads (both internal and external), ensuring seamless transitions between PEM pipes and valves, pumps, or brass fittings.

Important considerations for installation

To ensure a completely leak-proof and compliant installation, follow these key assembly steps:

• Use of a pipe insert (support sleeve): When installing mechanical fittings on soft or thin-walled PE and PEM pipes, a correctly sized support sleeve must always be inserted into the pipe end to prevent deformation under pressure.
• Square cutting and chamfering: Always cut the pipe squarely and remove any burrs or sharp edges before insertion to prevent damage to the seal during assembly.
• Correct sizing: Match the pipe’s outer diameter with the appropriate fitting size (e.g., 16 mm, 20 mm, 25 mm, 32 mm, 40 mm, 50 mm, or 63 mm).
• Cleaning the pipe end: Ensure the pipe is free from sand, soil, and dirt before inserting it into the fitting to guarantee a completely tight seal.

Typical applications

The BA66 and BA77 series are suitable for both new installations and renovations in systems for:

• Incoming municipal water supply and connection to water meter brackets
• Private water supply from drilled or dug wells to pressure tanks and pump systems
• Agricultural installations, garden irrigation, and livestock watering
• Seasonal water lines and outdoor piping runs where high durability is required