Internal and External Thread Stop Valve

The internal and external threaded stop valve is a common valve type, usually used to regulate the flow of fluid in a pipeline system. It can open or close the flow channel by rotating the valve disc, thereby controlling the flow of the fluid or completely cutting off the flow.

Design and manufacturing: ANSI B16.34-1996
Connection type: NPT (M.F) internal and external thread connection
Structural features: tapered thread seal
Valve inspection and testing: APISTD598-2004

※ Main Features
Valve body material
Usually made of corrosion-resistant and high-pressure resistant materials such as cast steel, stainless steel, and copper to ensure long-term stable operation of the valve under high pressure, high temperature and harsh environment.
Valve flap design
The valve flap is the core component of the internal and external threaded stop valve. Its design is precise and can effectively ensure the sealing. When the valve flap is closed, it is in close contact with the valve seat through the thread to ensure that the fluid does not leak.
Connection method
The internal and external threaded stop valve provides two connection methods: internal thread and external thread according to the needs of the use scenario. The internal thread design is suitable for the connection of threaded pipes, while the external thread is suitable for direct connection with pipes with internal threads.

※ Product Application
Water treatment industry
Internal and external threaded stop valves are widely used in water supply pipelines. They can effectively regulate water flow and prevent reverse flow of water flow, ensuring the normal operation of the pipeline system.
Petroleum and natural gas
In the transmission pipelines of oil and natural gas, internal and external threaded stop valves play a key role in flow control, especially in high-pressure pipelines, ensuring the safe and stable transmission of oil and natural gas.
Chemical industry
Chemical plants use internal and external threaded stop valves to control the flow of corrosive or volatile substances. The sealing and corrosion resistance of the valves are particularly important.
HVAC system
In HVAC systems, internal and external threaded stop valves are often used to regulate fluid flow to ensure the stable operation of the temperature control system.

※ 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.

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