Enterprise Information
Material, Inspection and Transmission Device of High Pressure Casting Globe Valve
Release time:
2017/07/31 21:52
1. high pressure casting cut-off valve material body and valve cover material is divided into several kinds. Valve materials in strict accordance with the requirements of steel valves and the requirements of the relevant valve material standards for material selection, and to ensure the service life of the valve. The valve materials produced by Wuhan Xiete Valve Technology Co., Ltd. are manufactured in accordance with the specified standards. The steel castings shall be heat treated according to the standard requirements. Non-destructive testing of pressure-bearing steel castings. All pressure forgings meet the specified requirements. The report and inspection documents shall be filed to facilitate the inspection and acceptance by the buyer during the valve production process. Stem material is divided into 13Cr, 304 or 316. Stem material according
Heat treated carbon steel gate valve sealing surface
Release time:
2017/07/28 21:52
The so-called heat treatment of carbon steel gate valve sealing surface refers to the heat treatment process of carbon steel valve body and gate surfacing cobalt chromium tungsten carbide sealing surface. Carbon steel valve surfacing cobalt chromium tungsten carbide sealing surface, to stress annealing, the main purpose is to remove the residual stress generated by the welding, improve the mechanical processing performance. For the gate valve with carbon steel matrix, CoCrW hard alloy, SF-4(137) alloy and WF330 or Fe30 parts are welded by spray welding, the heating temperature of stress relief annealing is selected according to the carbon steel matrix material, generally 600~650 ℃. The holding time depends on the effective thickness of the part, generally
Five tips to quickly solve the valve sealing performance is poor
Release time:
2017/07/26 21:52
Many valves generally have poor sealing performance, and many users do not know how to solve them. Wuhan Xiete Valve Technology Co., Ltd. organized senior technicians to study carefully and quickly find out five effective ways to solve the poor sealing performance of the valve. Five effective ways to solve the poor sealing performance of the valve: 1. grinding method after grinding, eliminate traces, reduce or eliminate the sealing gap, improve the smoothness of the sealing surface, in order to improve the high sealing performance of the valve. 2. improve the sealing force of the actuator to improve the sealing force of the actuator to the valve core, it is also a common method to ensure that the valve is closed, increase the sealing ratio and improve the sealing performance. Commonly used
Necessary protective measures shall be taken for valve installation
Release time:
2017/07/24 22:23
When installing the valve, the operator must understand its installation method, because the valve in the installation of protective measures is very important. If you do not pay attention to the installation is very easy to cause damage or leakage of the valve, it will cause a lot of trouble. So, what protective measures do we need to take when installing the valve? By Wuhan Xiete Valve Technology Co., Ltd. describes in detail the protective measures for the installation of the valve. Check valve protective measures in order to prevent leakage or failure of the check valve after the media backflow, resulting in product quality decline or cause accidents and other adverse consequences, the check valve will be set before and after one or two
When installing the valve should pay attention to the following points
Release time:
2017/07/16 22:24
1. to the flow direction and installation position, many valves are directional, such as throttle valves, globe valves, check valves, proportional pressure reducing valves, etc. If the installation is reversed, it will affect the use effect and life of the product. It may not work at all and cause danger, etc. Some valves will indicate the direction on the valve body; if some valves do not indicate the direction, the correct direction should be identified according to the working principle of the valve. The valves produced by Wuhan Xiete Valve Technology Co., Ltd. have their own characteristics. The position of the valve at the time of installation should consider the convenient operation of the staff: Wuhan Xiete Valve Technology Co., Ltd. even if it encounters some difficulties in installation
Inspection and transmission device of high pressure casting stop valve
Release time:
2017/07/14 21:52
Inspection and testing of high-pressure casting globe valves 1. Test standards The inspection and testing of valves produced by Wuhan Xiete Valve Technology Co., Ltd. shall be carried out in accordance with the prescribed standard operations. The test of the shell pressure shall be carried out before the valve surface treatment and painting. 2.100% pressure test shall be carried out before the valve leaves the factory. The valve pressure test shall at least include the following contents: upper seal test, shell test, high pressure water seal test, low pressure gas seal test and other tests specified in the specification. 3. After the test, drain the test medium in the valve body. 4.100% of all butt welds shall be subject to X-ray inspection. For PN160 and above pressure rating valve pressure parts
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