A Stop End Connector or "plug" is most suitable for central heating systems. It is popularly used as leak proof seal that can be easily fitted in case the water supply needs to be interrupted for some reason. Consequently, it can also be removed to allow work to restart or to allow an extension to a system. This unique feature also facilitates their usage during pressure testing a system before appliances are connected.
These fittings are either made in metals like copper and stainless steel or plastic. Stop ends are widely used in :
- Direct and indirect cold water systems.
- Unvented and vented hot water systems.
- Sealed central heating systems.
They come in various sizes such as :
- 10 mm
- 15 mm
- 22 mm