roots vacuum pumps and vacuum blowers            Europe, Middle East and Africa     North and South America     Asia Pacific      China     India     Japan     Taiwan     Shandong Zhangqiu Blower Co., Ltd - Mingshui, 250200 Zhangqiu City, Shandong Province , China Wei LIU, E-Mail, Tel. Fax products: roots type blower, roots vacuum pump, multistage centrifugal blower, regenerative blowers and accessories for blowers. company profile: Founded in September of 1968. We passed ISO9001 quality system authentication in December, 1996. We are the largest Positive displacement blower manufacturer in China, the technology of our Roots type blower is from USA and Japan. Taizhou Xingguang Vacuum Pumps Manufacturing Co., Ltd. - Dongshan Industry Zone, Jiaojiang, Taizhou, 318 000 Zhejiang, China Tel. +86 576-865 3588, Fax +86 576-865 3589 products: Roots vacuum pumps from 30 to 2500 l/s, 0.75 - 18.5 KW, ultimate pressure 5×10-2 The series ZJY roots vacuum pump is with overflow valve: A gravity valve installed between the suction and exhaust part of the pump opens automatically when the pressure difference is over the weight of the valve, keeping the pressure difference always at a fixed controllable value. This value is the allowable highest pressure difference to ensure the pump work normally. The roots vacuum pump with overflow valve is a kind of overload self-protective pump. other products: rotary piston vacuum pumps, liquid ring vacuum pumps, vacuum systems. ZHANG GU - 141 Mingshui Street, 250 200 Zhangqiu City, Shandong province, China Tel +86-531-3250080, Fax: +86-531-3214543 products: roots blowers and centrifugal blowers Site Map  www.vacuum-guide.com