Because of its advanced technology, reliable performance, easy switching valve operation and maintenance of Shandong, has been petroleum, chemical, metallurgy, electric power, shipping and other departments as pipeline gas, liquid medium switchgear and widely used. The main performance parameters Nominal pressure: 1.6,2.5.4.0.6.4MPa Operating temperature: -29 ~ 425 ℃ (steel) -40 ~ + 550 ℃ (stainless steel) Nominal diameter: DN50 ~ 800mm Body material: 304.306.316L.WCB .HT200 Flange: JB / T79. GB913. HG20592 Medium: corrosive fluid action of the air, water, steam, oil and nitric acid, acetic acid, etc.: Z641 pneumatic cut-off valve manufacturers, Weifang modulating valve, manual control supply voltage: 220VAC, 24VAC input signal: 4 ~ 20mA / 1 ~ 5VDC at 0 ~ 20mA / 0 ~ 10VDC pneumatic valve procurement specifications only clear, category, industry pressure to meet the procurement requirements of the practice, in the current economic environment, the market is imperfect. Because under the pneumatic valve manufacturers of products in order to compete, each pneumatic valve were unified design concept, with different innovations, formed their own corporate standards and product personality. Therefore, when the pneumatic valve procurement more detailed technical requirements, coordinating with manufacturers to reach a consensus, as an annex to the pneumatic valve procurement contracts is essential. Weifang pneumatic valve Z641, Z641 pneumatic valve, valve type Everbright Everbright Limited provided by Shandong valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) strong, credible, Shandong Weifang ball industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Everbright valve into the brilliant and you work for a better future!