Single check valve protects against the risk of back flow and back syphonage contaminations Compact lightweight construction for easy installation Minimum pressure drop giving good flow rates Ideal for all Class 2 contamination risks as per Water Supply (water fittings) Regulations 1999 Available with a comprehensive selection of FBSP and compression connections Body: DZR Brass Seals: NBR Elastomor Check Cartridges: Acetyl Copolymer Spring: Stainless Steel