Vertical circular steel circular check valve H42W circular valve manufacturers

A vertical check valve uses and features H42H / W vertical valve design and manufacturing standards in strict accordance with GB12235, the valve along a centrally located for the lifting movement, the bush using good wear resistance, low coefficient of friction of special materials , flexible and reliable. good sealing performance. Vertical pipeline valve products are widely used in petroleum, chemical, pharmaceutical, power industry, and other conditions. Since the pressure in the inlet end of the line media, and to overcome the resistance of the spring causes the valve to open. When the pressure is lower than the inlet end of the media outlet end of the spring to the seat leaving the spool valve closes to prevent backflow media, so starting and ending back role. Kanghao valve faith "-based, mutual benefit and win-win" principle of service to our customers. Full implementation of standardization, specialization, scientific management system, a sound and effective quality management system, and has adopted the "ISO9001 quality management system certification," the company always adhere to the "Eslite survival, technology and development" approach to business, in product quality to the "excellence, excellence" for quality. Company net http://www.cnkhv1.com/ H42H / W vertical valve design and manufacturing standards in strict accordance with GB12235, the valve along a centrally located for the lifting movement, the bush using good wear resistance, low friction coefficient special materials, flexible and reliable. good sealing performance. Vertical pipeline valve products are widely used in petroleum, chemical, pharmaceutical, power industry, and other conditions. Since the pressure in the inlet end of the line media, and to overcome the resistance of the spring causes the valve to open. When the pressure is lower than the inlet end of the media outlet end of the spring to the seat leaving the spool valve closes to prevent backflow media, so starting and ending back role. Second, the vertical valve main performance specifications Nominal test pressure (MPa) 1.6 2.5 4.0 2.4 3.8 6.0 Shell test Seal test 1.8 2.8 4.4 Body Material WCB (C) CF8 (P) CF 8M (R) WC6 WC9 work Temperature ≤ 425 ≤ 100 ≤ 100 ≤ 550 ≤ 550 For medium water, steam, oil class nitric acid type water, steam water, steam three, vertical check valve to perform design and manufacturing standards: GB12235 Structural length: GB12221 connection flange: JB / T79-1994 test and inspection: JB / T9092-1999 four main vertical valve connection size Nominal diameter PN1.6 / 2.5 / 4.0MPa H Series 1 Series 2 DN32 145 110 DN40 155 120 DN50 170 140 DN65 180 160 DN80 200 185 DN100 220 210 DN125 250 275 DN150 280 300 DN200 380 380 Performance Specification Vertical check valve action principle and structure of the valves in the course description, the medium flows in the direction of an arrow. 1, when the medium flows in a predetermined direction, the role of the media valve by force, is turned on; when the upstream medium, because the weight of the valve and the valve by the media backward force, the valve and valve seat sealing surface density closed together, to prevent the media countercurrent purposes. 2, the sealing surface of the valve body and stainless steel welding. 3, the structural length of the valve according to the provisions of GB12221-1989, flange dimensions according to the provisions of JB / T79-1994 in. Vertical Check Valve main parts of the material of construction, installation points 1), the installation position, altitude, direction of imports and exports must meet the design requirements, pay attention to the direction of flow of the medium should be consistent with the direction of the arrow on the valve body, the connection should be firmly tight. 2), must be visually inspected prior to installation of the valve, the valve plate should be consistent with the provisions of GB 12220 of the existing national standards, "Universal Valve logo." For working pressure greater than 1.0 MPa and the role played off valve in the main pipe, the installation should be the strength and rigorous performance tests, passing behind the prospective use. Strength test, the test pressure is 1.5 times the nominal duration of not less than 5min, the valve housing, packing should be no leakage in compliance. Tightness test, the test pressure of 1.1 times the nominal pressure; test duration in line with GB 50243 check valves to vertical installation and use 1, the valve passages to be blocked at both ends, there is a dry and ventilated room. If long-term storage should always check the anti-rust. 2, the valve should be cleaned before installation, and eliminate defects caused during transport. 3, must be carefully checked when installing signs and nameplates on the valve meets the requirements. 4, the valve is installed on the horizontal pipe, valve cover upward. Vertical Check Valve Vertical Check Valve has the following main features two excellent characteristics: 1, three-dimensional valve flange and wafer points, it has a simple structure, fewer parts, light weight and other characteristics. Vertical Check Valve is mainly used for the need to prevent the media back in various conditions occasions. 2, vertical check valve spring may not be provided for vertical installation, use the valve to its own weight and pressure fluid returning back to the beginning and end action. Supply factory direct ★ ★ H42W Kanghao steel circular valve ★★ ▂▃▄▅▆▇▉ welcome customers hotline 18057718023▉█▇▆▅▄▃▂ ★★ ★★ ▂▃▄▅▆▇▉ welcome customers QQ online consultation ▉█▇▆▅▄▃▂ ★★