TH VALVE • PROFESSIONAL VALVE MANUFACTURER
GET IN TOUCH WITH US
Cell: 0086-185 2639 6136
0086-133 7031 7626
E-mail: tanghai@tanghaivalve.com
info@tanghaivalve.com
Web: www.tanghaivalve.com
Add: East of Guanghui Road, Beizhakou town, Jinnan District, Tianjin, P.R.China.
© Copyright 2020 Tianjin Tanghaidongyang Valve Co., Ltd. All Rights Reserved.
Top Valve Manufacturer, Provide the best solutions for valve projects.
The difference and application of stainless steel 430, 304, 316
Stainless steel 430, 304,316 are the material of valve body, valve stem/shaft, or valve disc/plate. 430 ferritic stainless steel containing more than 12% chromium can prevent oxidation caused by natural factors. It is called stainless steel. It belongs to 430 ferritic stainless steel. It has low thermal expansion rate, excellent formability and oxidation resistance. The […]
Principles of valve selection in the petroleum and chemical industry
Faced with so many valve classifications and such complex various working conditions, to choose the most suitable valve product for piping system installation, you should first understand the characteristics of the valve; secondly, you should master the steps and basis for selecting the valve; and then you should follow the choice of oil , The […]
Chinese marine valve product standard encyclopedia
Marine valves are equipment used to control the pressure, flow and flow direction of fluids in marine pipelines to meet the environmental conditions of ships. A valve is a control device for a fluid pipeline. Its basic function is to connect or cut off the flow of the pipeline medium, change the flow of the […]
Description of valve pressure& installation direction requirements
As the name implies, the pressure of the valve refers to the pressure that the valve can withstand, that is, the pressure level of the valve is not lower than the design pressure level of the pipeline. The pressure-bearing direction refers to the closed state of the valve after the valve is applied to the […]
What are the main factors affecting valve sealing?
Valve leakage is very common in daily life and industrial production, and the impact is very large. It will cause waste or bring danger to life. For example, the leakage of tap water valve will lead to serious consequences, such as the chemical industry. Toxic, harmful, flammable, explosive and corrosive media leakage, etc., serious threats […]
Reasons and solutions for leakage of valve sealing surface
The valve is the most used control component in the fluid system. It can be used to switch or control the flow direction and adjust the function. From the simplest cut-off function, the valve is sealed in the machine. Its function is to prevent the medium from In the cavity where the part is located, […]
Description of electric valve connection
Electric valve wiring methods are classified according to different use requirements and different field conditions, and the wiring methods used by electric actuators with different functions are also different. The user should have an understanding of the relevant knowledge of the wiring, so as to avoid unnecessary failures. On the one hand, the entire circuit […]
The main classification and use conditions of valve sealing materials
The valve seal is the most important part of the entire valve. Its main purpose is to prevent leakage. The valve sealing seat is also called a sealing ring. It is an organization that directly contacts the medium in the pipeline and prevents the medium from flowing. When the valve is in use, there are […]
Valve material and valve standards-(9)- general valve & parts materials
General valve material The internal material combination specified by API600 for general valve material: Stem material types hardness sealing surface seal part no., material type hardness 13Cr 200-275 1 13Cr ≥HB250 4 13Cr ≥HB750 5 or 5A HF ≥HB350 6 13Cr/NiCu ≥HB750/≥HB175 7 13Cr/13Cr ≥HB250/≥HB750 8-8A 13Cr/HF ≥HB250/≥HB350 18Cr-8Ni no require 2 18Cr-8Ni no require […]
Valve material and valve standards-(8)- Monel alloy application
4. Application of Monel alloy: The A and E levels of M35-1, M35-2 and QQ-N2-88 are usually used to manufacture refined Monel alloy pumps, valves and accessories. The B-grade (3.5%Si) Monel alloy with the highest Si content is mainly used to manufacture shafts and wear-resistant rings that require good wear resistance due to its high […]