Apex Filtamate 350 kpa plastic pressure limiting valve with daul check non return, with built in John Guest push in 3/8″ tubing inlet and 3/8″ tubing outlet. Protects water filter units by limiting water pressure. Ideal for R/O units, Fridges, Ice Makers and Coffee Makers. Resists water hammer. Perfect for use with our range of Milk Jug Rinsers as it limits water pressure to 350Kpa and stops back flow.