Description
McAlpine C10A 40mm 1½” Adjustable Inlet Bottle Trap
McAlpine C10A is a 40mm / 1½” adjustable inlet bottle trap for sink, urinal and general waste pipe installations. It is designed for domestic plumbing repairs, replacement work, maintenance jobs and trade installations where a 40mm bottle trap with extra fitting adjustment is required.
McAlpine C10A Trade Overview
The McAlpine C10A bottle trap is a practical choice for plumbers, kitchen fitters, bathroom fitters and maintenance teams. The adjustable inlet helps line the trap up with the waste outlet and existing pipework, making it especially useful on repair and replacement jobs where the original pipe positions may not be perfect.
This trap has a 75mm water seal to help stop drain odours from coming back through the waste system. It is manufactured from white polypropylene and TPE, giving a durable, lightweight fitting for everyday plumbing use.
The C10A uses a 1½” Multifit compression outlet. This connection is designed to suit common waste pipe materials including plastic, copper and lead pipe, which gives installers more flexibility when connecting into existing waste runs.
Key Features
- McAlpine C10A adjustable inlet bottle trap
- 40mm / 1½” size for sink, urinal and waste pipe installations
- Adjustable inlet helps line up with existing pipework
- 75mm water seal to help prevent drain odours
- White polypropylene and TPE construction
- 1½” Multifit compression outlet for flexible pipe connection
- Suitable for plastic, copper and lead waste pipe
- Compression connection for simple fitting and removal
- Useful for repair, maintenance and replacement work
- Conforms to BS EN 274-1:2002
Common Uses
- 40mm sink waste connections
- Kitchen sink trap installations
- Utility sink waste pipework
- Urinal waste pipework
- Replacement of old 40mm adjustable bottle traps
- Domestic plumbing repairs
- Rental property maintenance work
- Trade plumbing installations
Why Choose an Adjustable Inlet Bottle Trap?
An adjustable inlet bottle trap is useful when the waste outlet and existing waste pipe do not line up exactly. The telescopic inlet gives the installer extra height adjustment, which can save time when fitting below sinks, cabinets, utility areas and other waste outlets.
The McAlpine C10A is a strong stock item for trade counters because it covers a range of common 40mm waste trap jobs. It gives a reliable 75mm water seal, a removable bottle section for cleaning, and a Multifit outlet that suits a range of waste pipe materials.
Installation Notes
Before fitting, check that the waste outlet and pipe size are suitable for a 40mm / 1½” trap. Cut the waste pipe cleanly and make sure it is fully seated inside the Multifit compression outlet. Adjust the inlet height to suit the waste outlet, then tighten the compression nuts securely by hand.
After fitting, run water through the waste and check all joints for leaks. The McAlpine C10A is a 40mm adjustable bottle trap. For 32mm basin waste installations, use a suitable 32mm trap instead.
Browse more products in our Waste Traps, Valves & Connectors category.
For manufacturer information, see the McAlpine product information.







