Reverse Osmosis Flow Restrictor Valve Fits 1/4" / 6.4mm Pipe This is a spare part for our Reverse Osmosis units. Accepts 1/4 inch OD tubing ie the standard size - which our Reverse Omsosis units have. Inbuilt 1/4 inch easy-fit connectors It connects to the waste water pipe that leads off to the drain This flow restrictor valve is an essential component for any reverse osmosis water filter. This might look like a simple part but if it fails the whole RO system will shut down. ORDER ANYTIME Day or Night 24/7 for NEXT DAY DELIVERY With FREE Delivery Immediate Dispatch Purchase with Total Confidence Money Back Guarantee Click here for delivery information No hidden extras If you don't like what you get, send it back for a full no quibble refund. If for any reason you decide to return your purchase we promise you a no questions asked THREE MONTH Money Back Guarantee. Click here to read the "large print" about our Money Back Guarantee. PLUS We'll even pay your return postage ! Please order now to secure today's sale price. ADD TO BASKET Product Code: RO-FLOW300