Solvent Weld Waste 40Mm 135Deg Knuckle - Grey

Solvent Weld Waste 40Mm 135Deg Knuckle - Grey

The 40mm Solvent Weld 135° Knuckle Bend (also referred to as a 45-degree elbow) is a high-quality drainage fitting used to create a shallow change of direction in a waste system. Specifically designed for 40mm waste pipe, this fitting is the standard choice for kitchen sinks, dishwashers, and washing machine discharge lines where a smooth, unobstructed flow is required.

Key Features and Installation Details
Compliance: Manufactured to meet BS EN 1451-1, ensuring full compliance with UK building regulations for soil and waste discharge.

Material: Produced from durable ABS (Acrylonitrile Butadiene Styrene) in a professional grey finish. ABS is preferred for its high impact strength and its ability to withstand domestic hot water temperatures.

Configuration: 135° Knuckle (45-Degree Bend):

Socket x Socket: Features two 40mm female sockets designed to receive standard 40mm solvent weld waste pipe.

Flow Efficiency: The 135° angle provides a gentler transition than a 90-degree bend, significantly reducing the risk of hair, grease, or debris buildup and maintaining a high flow rate.

Dimensions: Precision-engineered for 40mm (1 1/2") waste systems.

Installation Method: Solvent Welding – This process uses solvent cement to chemically fuse the pipe and fitting together, creating a permanent, unified joint that is completely leak-proof and more resistant to physical stress than push-fit alternatives.

The Installer's Advantage
The 135-degree knuckle is essential for creating professional "offsets" or navigating around structural obstacles. By using two 45-degree bends together, an installer can create a "dog-leg" to shift a pipe run while keeping the flow as smooth as possible. The solvent weld nature of the fitting makes it the preferred choice for pipework that will be concealed under floors or behind kitchen units, where a permanent, non-mechanical joint is required for long-term security.

Essential Companion Products (System Integration)
To ensure a high-quality installation, the following components are recommended:

Jointing Compound: Required to create the chemical bond: Solvent Cement (250ml)

Maintenance Access: To provide a cleaning point in the run, use the: Solvent Weld Waste 40mm Access Plug - Grey

Specialist Fixtures: Ideal for the drainage of high-spec kitchen appliances like the: Brewmaster 3-in-1 Square Tap system

Supply Pipework: For the associated water feeds: Copper Tube 15mm x 0.7mm x 3m

Specialist Support and Local Collection
Need 40mm waste fittings for a kitchen renovation or advice on drainage gradients? Our trade counter is fully stocked with a complete range of grey solvent weld solutions.

Visit our trade counter and Bathroom Showroom at 61 Fullers Road, E18 2QB for expert advice and quick access to parts.