This Bristan Sirrus Gummers Traditional Shower Valve features fully adjustable pipe centres, allowing it to replace showers with various centre sizes including 110mm, 130mm, 138mm, and the industry standard 150mm, as well as anything in between. The adjustable elbows can accommodate exposed pipework running up or down the wall across a wide range of centres. Each Bristan Mini Valve includes two sets of elbows to replace almost any shower mixer valve with centres between 110mm and 155mm. Configuration options for inlet centres: 2 small elbows for 110-130 centres, 2 large elbows for 136-155 centres, or 1 small and 1 large elbow for 125-145 centres. Suitable for both domestic and commercial installations. Features include single sequential control for temperature and flow, adjustable inlet centres for compatibility with existing pipework (110mm-155mm), high performance even at 0.5 bar inlet pressure, automatic shutoff in case of water supply failure, and serviceable filters with check valves. Chrome plated to BS EN 248. Comes with a 1-year guarantee covering manufacturing faults. Riser kit not included.