John Guest, the manufacturer of Super Speedfit* technology for plastic Push-in Fittings and Shut-Off Valves, produces a comprehensive line of over 3,000 products addressing virtually every tubing connection requirement. Push-in Fittings and Shut Off Valves are manufactured in acetal and polypropylene in a variety of sizes and configurations. Our line of LLPE Tubing is available in inch and metric sizes in a variety of colors. All John Guest products are produced from FDA- approved materials in our ISO 9001 facility and are listed with NSF International Standards 51 and 61. No tools or sealant are needed to make reliable connections with John Guest products.