#15mm x 1/2" BSP Straight Service Valve | Chrome Plated Brass Isolation Valve.

Used in hot or cold water systems to isolate part of the system; avoids the need to drain down the whole system to carry out work. Operated by a screw driver slot. Compression one end with a swivelling union nut at the other for connection to taps, etc. Supplied with washer. Made in brass, chrome-plated.