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The McAlpine R16-GR is a specialized plumbing component designed for professional installers and DIYers managing grey water discharge systems. Its primary benefit is the seamless integration of smaller 19/23mm piping into standard 1.25-inch waste systems, making it ideal for connecting appliances like washing machines or secondary sinks. While highly effective for its intended application, users should note it is designed specifically for mechanical pipe boss connections and may require additional adapters if moving outside standard waste water configurations.
| Model Part Number | R16-GR |
|---|---|
| Brand | McAlpine |
Yes, it is designed for 1.25-inch waste pipes which are standard for many sink and basin applications.
The R16-GR is specifically rated for grey water and waste water systems; it is not recommended for high-pressure water supply lines.
Yes, this component complies with Building Regulations Approved Document H and BS 6798:2014.
The product is manufactured from high-quality, durable plastic suitable for long-term plumbing use.
No, a hose clamp is typically required separately to ensure a secure attachment on the 19/23mm side.
Ensure the pipe is pushed fully into the reducer and verify that a secure jubilee clip is tightened over the 19/23mm connection.
Check that the pipe is cut square and use a small amount of silicone-based pipe lubricant to assist in sliding the pipe onto the fitting.
Installation requires a compatible mechanical pipe boss. Ensure that the 1.25-inch tail is inserted firmly into the waste pipe fitting. When connecting the 19/23mm side, use a compatible clip or jubilee clamp to ensure a watertight seal, especially when connecting flexible hoses. Maintenance involves periodically checking the connection point for debris buildup, particularly in sink or laundry applications where lint or soap scum may accumulate. Flush the system with hot water regularly to prevent blockages from restricting the flow through the reducer.
