Pound-Class Power Station Stop Valve

There are two standard forms of stop valves for high temperature and high pressure power stations. One is the imported type that complies with ANSI B16.34 and JISL 1E101 standards, and the other is the national standard type that complies with JB3595 standards. The temperature and pressure levels they follow are consistent, and there is a certain interchange relationship in some pipelines. There are two structural forms, the straight-through type and the Y-direct current type adopt a bonnetless pressure self-tightening type in the middle, which has good sealing performance under high temperature and high pressure conditions. There are two materials for the self-sealing ring, one is low carbon steel, and the other is flexible graphite sandwiched with 316 wire (net). The sealing surface is welded with cobalt-based hard alloy, and the pure metal layer after processing is ≥3mm, which is wear-resistant, high temperature-resistant, corrosion-resistant, abrasion-resistant, and has a long service life. The two ends of the branch pipe are welded structures, and the weld groove can be made according to standards or user requirements. It is used as a start-stop device for cutting off, passing or regulating the medium on high temperature and high pressure water, steam, oil port, and superheated steam pipelines in thermal power plants, petrochemicals, metallurgy, etc.

※ Structural Features

1. Self-tightening connection without valve cover in the middle
2. Piston type/parabolic hard surface (HF) valve disc
3. High temperature creep resistance design
4. Nitriding precipitation hardened stainless steel is used for valve stem
5. Manual, gear transmission, electric

※ Main Parts Materials and Applicable Temperature

※ Product Application
Oil and gas industry
In oil and gas pipelines, storage tanks and processing equipment, stop valves are used to control the flow of fluids to ensure sealing and safety under high pressure and high temperature environments.
Chemical industry
Used in chemical pipelines and reactors, stop valves can effectively cut off fluids in high pressure and corrosive environments to ensure the safety and precise control of the production process.
Water treatment industry
In urban water supply, sewage treatment and fire protection systems, stop valves are used to switch fluids to prevent pipeline leakage and ensure smooth water flow.
Power industry
Used in steam pipes and cooling systems of power plants to control the flow of fluids and ensure stable operation of equipment.
Food and pharmaceutical industry
During the production and processing process, stop valves are used to control the delivery of raw materials, drugs or water flow to ensure hygiene and safety in the production process.
Construction industry
In HVAC systems and heating pipe networks, stop valves are used to adjust the flow of media such as water and steam to ensure comfortable environmental conditions.

※ Product Advantage
Good sealing performance
The close contact between the valve disc and the valve seat can effectively prevent fluid leakage and provide high sealing performance, which is particularly suitable for occasions where the fluid needs to be completely isolated.
High pressure resistance
The stop valve is sturdy in design and can withstand high working pressure. It is suitable for high-pressure pipeline systems and is widely used in oil, natural gas, chemical and other industries.
Low fluid resistance
Compared with other valves, the stop valve has less resistance to fluid passage when fully open, which makes it suitable for large flow fluid control.
Simple structure and easy maintenance
The structure of the stop valve is relatively simple and easy to install and maintain. The valve body and the valve cover are usually connected by bolts, and the valve seat and valve disc can be easily disassembled and replaced during maintenance.
High operational reliability
Since the valve disc of the stop valve moves perpendicular to the fluid direction, the flow can be accurately controlled during the opening and closing process, and the operation is relatively stable and reliable.
Wide range of application
The stop valve is not only suitable for general media such as clean water, steam, and gas, but can also handle some high temperature, high pressure, and corrosive media. It has a very wide range of applications.

※ FAQ

What are the installation requirements for control valves?
The valve should be installed at the appropriate position of the pipeline to ensure that the flow direction is consistent with the direction indicated by the valve body; secondly, check whether the valve and its accessories are intact before installation to ensure that there is no damage; during installation, ensure that the pipeline connection is stable to avoid stress concentration and prevent damage to the valve; in addition, sufficient space should be provided for the valve to facilitate adjustment, inspection and maintenance; finally, the valve should be protected from excessive vibration or temperature, especially under high pressure and high temperature environments.

What are the common applications of temperature and pressure reducers?
Temperature and pressure reducers are widely used in many fields. They are mainly used in steam systems to reduce high-pressure steam to appropriate pressure to ensure safe operation of equipment. They are commonly used in power, fertilizer, food processing and other industries. They are also used in oil and gas pipelines, chemical production, pharmaceutical plants, etc. to ensure stable pipeline pressure and avoid system overpressure or excessive temperature. In addition, reducers are also used in HVAC, metallurgy and other industries to adjust the temperature and pressure of the fluid in the system to ensure the smooth progress of the process.

How to maintain medium and high pressure valves?
When maintaining medium and high pressure valves, first check the wear of key components such as valve body, valve seat, sealing ring and valve stem regularly. Clean the valve to prevent impurities from blocking and affecting operation. Check the operating performance of the valve to ensure flexible opening and closing without sticking. Check the sealing to prevent leakage and replace the seals if necessary. For valves that operate at high pressure for a long time, it is recommended to perform functional tests regularly to ensure their reliability under high pressure environment. In addition, check the connection parts of the valve to avoid looseness or leakage caused by vibration or corrosion.

※ Industry Applications

※ Company Introduction

Jiangsu Gaote Valve Industry Co., Ltd. was established in 2003. The company is a medium-sized enterprise specializing in the production of various petrochemical and power station valve series. The main products include high-temperature and high-pressure power station valves, gate valves, stop valves, ball valves, check valves, butterfly valves, instrument valves, needle valves, regulating valves and non-standard special valves for power stations, etc. Hundreds of varieties and specifications of valves, products are widely used in power, petrochemical, metallurgy, pharmaceutical, mining, steel, mining, water supply and drainage and other industries. The company's R&D team actively explores the field of valves and explores a path of industrial upgrading from ordinary valves to valves.

Jiangsu Gaote Valve Industry Co., Ltd. is an innovative demonstration enterprise of small and medium-sized enterprises in Jiangsu Province. It is located in the Economic Development Zone of Funing County, Jiangsu Province, and National Highway 204 passes through the territory. The company has passed the ISO9001 quality system certification and the special equipment manufacturing license of the People's Republic of China. It is a member unit of the power station accessories supply of the State Power Corporation, a member unit of the Sinopec Equipment Resources Market, and a member unit of the first-level supply network of China National Petroleum Corporation. It has gradually established a good reputation in power station valves. The company has an advanced management mechanism, with fixed assets of more than 30 million yuan, more than 100 sets of sophisticated mechanical processing equipment and inspection and testing equipment, and more than 10 technical R&D personnel, forming an integrated production, sales and service.