The Bristan basin mixer tap isolating connectors with integral flow limiters 3ltr 4ltr 5ltr and 6 ltr included. This useful kit allows any basin mixer tap to be flow limited to a choice of 3, 4, 5 or 6 litres per minute depending on requirements. The isolating connectors will fit copper or flex tails with 15mm compression fittings. The connectors also include non-return valves for compliance with WRAS.