PB series diaphragm pressure tank using butyl rubber diaphragm and natural polypropylene lining, use 304 stainless steel in interface parts, through many process and all aspects testing, to make sure each pressure tank structure and quality in accordance, fully ensure the water health and safety. Long life design, to ensure the water supply system is more effective and reliable operation. Full compliance with the high manufacturing standards and requirements for product safety and environmental protection in EU, America and other countries, completely free maintenance, make you more comfortable when using the product.