If your Rangemaster Belfast Monobloc TBM1BF Tap is dripping from the Spout, then usually replacing the Valve will fix this. There are two valves in this tap. If your Rangemaster Rangemaster Belfast Monobloc TBM1BF Tap is plumbed correctly, then the lever on the left operates your Hot Water Feed and the Valve opens Clockwise. The Lever on the Right operates the Cold Water Feed and this Valve opens Anti-clockwise. The Hot and Cold Valves are identical other than the fact that they open either Clockwise or AntiClockwise. They are not therefore interchangeable. We have DIY guides on our website to assist you in removing your own Valve and replacing it with a new Valve. Our 7 easy steps to replace Kitchen Tap Valve is straightforward Please take care to ensure that you remove any debris inside your Rangemaster Belfast Monobloc TBM1BF Tap that might have built up over the years in use as otherwise the new Valve will also be affected.