Sink trap McAlpine HC7HC12-POL1-25 double 3.5" x 50 mm with washing machine/dishwasher connection and overflow

McAlpine HC7HC12-POL1-25 is a double tubular sink trap designed for 3.5" outlets and 50 mm pipe connections. It integrates a dedicated discharge connection for a washing machine or dishwasher and includes an overflow connection. The product is intended for installation beneath two-bowl kitchen sinks to manage wastewater from both bowls and connected appliances while preventing sewer gases from entering the room.

Advantages

The double tubular design provides reliable drainage for two sink bowls while keeping a compact profile under the sink. The integrated appliance connection simplifies plumbing for a washing machine or dishwasher, reducing the need for additional fittings. The overflow connection offers an additional safety path for excess water, and the trap's construction resists common blockages and is serviceable for cleaning.

Suitable for

• Two-bowl kitchen sinks with 3.5" outlets
• Connections where a washing machine or dishwasher discharge needs routing into the sink trap
• Installations requiring an overflow connection from sink bowls
• Domestic and light-commercial kitchens with 50 mm waste pipe systems

Key specifications

• Configuration: double tubular sink trap for two sink outlets
• Outlet size compatibility: 3.5" sink outlets
• Pipe connection diameter: 50 mm
• Integrated appliance discharge connection for washing machine or dishwasher
• Overflow connection included
• Material: corrosion-resistant plastic (suitable for typical domestic wastewater)

How to use

Install the trap beneath a two-bowl sink by connecting each sink outlet to the corresponding inlet on the trap and securing the 50 mm outlet to the waste pipe. Attach the washing machine or dishwasher discharge hose to the dedicated appliance connection and secure with an appropriate clamp. If present, connect the sink overflow to the overflow inlet. Ensure all compression fittings are tightened to prevent leaks and confirm correct slope of the waste pipe for efficient drainage. Periodically inspect and, if necessary, disassemble the trap for cleaning to remove accumulated debris.

Usage recommendations

Before installation, verify compatibility with existing 3.5" outlets and 50 mm waste piping. Use only approved clamps and fittings for appliance hoses and check local plumbing regulations for required installation practices. Regular visual checks and occasional cleaning will help maintain drainage performance and prevent odors.