BWT W+M Flex straight connector 3/8" — plumbing fitting for water treatment

BWT W+M Flex straight connector 3/8" is a plumbing fitting engineered for reliable, low-profile connections in water treatment systems. The straight 3/8" design creates a compact link between pipes, filters and appliances, suitable for installations where a direct inline coupling is required. The connector is intended for use with potable water systems and filtration units, providing a straightforward mechanical join that minimizes space and maintains a secure flow path.

Advantages

The straight connector offers a compact footprint and a simple installation process that reduces the need for additional fittings. Its 3/8" straight configuration supports a stable, low-resistance flow and is compatible with common water treatment components. The design promotes a tight mechanical seal to reduce the risk of leaks when installed according to standard plumbing practice.

Suitable for (tasks / use cases)

• Connecting under-sink filtration units to supply lines
• Linking water softeners, filters or dosing units to distribution piping
• Creating short, inline connections in confined installation spaces
• Service lines for drinking-water treatment and maintenance access

Key specifications

• Straight coupling geometry for direct inline connections
• Compact, low-profile form suitable for tight installation areas
• Designed for potable water and filtration system use
• Mechanical connection type providing a secure seal under normal operating conditions

How to use

Prepare the tubing or fitting ends by cutting clean, square and deburred. Insert each tube or compatible fitting into the connector until the seating position is reached, following the connector's assembly guidance. Tighten any required compression nuts or securing elements evenly to ensure a uniform seal; do not overtighten. After installation, perform a pressure check and inspect all joints for leaks under normal supply pressure before returning the system to service.

Usage recommendations

Use with tubing and components rated for potable water systems and compatible with a 3/8" coupling. Follow local plumbing codes and manufacturer instructions for installation torque and pressure testing. Replace any connector that shows signs of wear, damage or persistent leakage.