The Portland water inlet filling cap fits in place of your locking water cap during filling.\nSimply connect your hose to the standard hose connector with its quick release connector and easily refill the fresh water tanks without the need of holding the hose in place. The cap has a handy built in over pressure valve so can also be used on tanks without over pressure valves and will reduce any leaks whilst refilling. The water inlet cap is a more hygienic way to refill fresh water tanks. Check that the shape of your cap against the images shown and the list of compatible models below.\n* Please note that the Portland Water Inlet Cap only fits the following brands:\nArca / Chausson / Caravelair / Challenger / Silver / Sterckeman / Benimar / Autostar / Vendome / Sublim / Fleurette / Dethleffs / LMC / TEC / Solifer / Pola\nFeatures:\n--Fits a wide selection of motorhomes / caravans\n\n--More hygienic way to refill fresh water tanks\n\n--No leaks whilst refilling water tanks; built in ov.