DutchLine – Cloakroom Tap Connection Kit (Stop Valve) 1/2×3/8 – Matt Black

A cloakroom tap connection kit with stop valve in 1/2×3/8 inch provides a neat, isolatable water connection behind your cloakroom tap. This DutchLine kit is designed for anyone fitting a cloakroom tap in a toilet room or small bathroom who wants a built-in isolation function without mounting a separate stop valve. The matt black finish suits modern and industrial interiors.

Specifications

Is this product right for your situation?

This connection kit is suitable when the water supply in the wall or floor terminates at 1/2 inch and your cloakroom tap has a 3/8 inch connection. This is the most common combination for compact cloakroom taps. The integrated stop valve allows you to isolate the water supply to that individual tap — ideal for maintenance or replacement without needing to turn off the main stopcock. The matt black finish pairs perfectly with cloakroom taps and bathroom & plumbing fittings in the same colour scheme.

If you require a different connection size, such as 1/2×1/2, this kit is not the correct choice. Always check the connection diameter of your tap before ordering.

Installation and use

Hand-tighten the stop valve, then turn no more than half a turn further with a spanner. A common mistake is over-tightening, which damages the sealing washer and causes the connection to leak. After installation, always check at low pressure that all connections remain dry before fully opening the stop valve.

Frequently asked questions

What is the difference between a connection kit with a stop valve and a standard coupling?

A standard coupling simply connects the water supply pipe to the tap, with no isolation function. A connection kit with a stop valve has a built-in isolator that lets you shut off the water supply to that specific tap. This is practical when you want to replace the tap or fix a leak without interrupting the entire water supply.

Is 1/2×3/8 the standard size for a cloakroom tap connection kit?

In most UK homes the cold water supply pipe is 1/2 inch and the cloakroom tap has a 3/8 inch threaded connection. The 1/2×3/8 size is therefore the most commonly used combination for cloakroom basin connections. Always check the specifications of your own tap and pipework before ordering.

Can I combine this matt black connection kit with an existing toilet or cloakroom unit?

Yes, provided the connection sizes match. The matt black finish is particularly popular alongside black bathroom & plumbing fittings or black taps, but the kit functions perfectly regardless of the colour of the unit or toilet. Do ensure the stop valve remains accessible after installation for future maintenance.

Looking for a matching cloakroom tap or other tapware? Browse the cloakroom taps collection or the full range of taps at Schwertz & Co.

Item number: HF815-MB
EAN: 8721189801494

Netherlands & Belgium: Order before 2pm, delivered within 2 working days

Germany: 1–3 working days

Rest of Europe: 3–8 working days

See our delivery page for more information here.

We offer a 30-day returns or exchange policy if you're not completely satisfied with your order for any reason. For more information, please see our Returns Policy here.