National Standard Stop Valve

 

National Standard Stop Valve is a straight-through fluid control device designed and manufactured in strict accordance with national standards, mainly used for opening and closing the regulation of liquid and gas media.

 

 

Reliable sealing
National Standard Stop Valve adopts a conical seal design, combined with high-precision seal pair processing technology, and can still maintain leakage-free performance when the pressure level is as high as PN100.

 

Compact structure
Through fluid dynamics optimization design, the overall structure of the National Standard Stop Valve is more compact, and the equipment space is reduced by about 15%, which helps to improve the flexibility of the system layout and reduce installation and maintenance costs.

 

Easy operation
National Standard Stop Valve adopts an independent design of handwheel and valve stem. The handwheel does not rotate with the valve stem during the opening and closing operation, which significantly reduces the operating torque, which is about 20% less than the traditional stop valve, improving the convenience of use and reducing the burden of manual operation.

 

High corrosion resistance
National Standard Stop Valve adopts highly corrosion-resistant materials (such as 316 stainless steel and PTFE-lined steel) to ensure that the valve can be used stably for a long time in corrosive media such as strong acid, strong alkali, and seawater.

 

 

Model	Size (DN)	Pressure Rating (PN)	Material	Connection Type	Temperature Range	Standard Compliance
J41H-16C	DN15–DN200	PN16	Carbon Steel (WCB)	Flange	-29°C to 425°C	GB/T 12235, EN 13709
J41W-25P	DN10–DN100	PN25	Stainless Steel (304)	Threaded/Socket Weld	-196°C to 150°C	ASME B16.34, API 602
J41Y-40	DN20–DN250	PN40	Alloy Steel	Butt Weld/Flanged	-29°C to 540°C	GB/T 12235, EN 13709

 

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Model	Size (DN)	Pressure Rating (PN)	Material	Connection Type	Temperature Range	Standard Compliance
J41F-16P	DN15–DN150	PN16	Stainless Steel (316)	Flanged/Threaded	-29°C to 425°C	GB/T 12235, ASME B16.34
J41F-25R	DN20–DN80	PN25	PTFE-Lined Steel	Flanged	-196°C to 120°C	EN 13709

 

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Model	Size (DN)	Pressure Rating (PN)	Material	Connection Type	Temperature Range	Standard Compliance
J41H-64	DN25–DN200	PN64	Forged Steel	Flanged/Butt Weld	-29°C to 425°C	GB/T 12235, API 602
J41Y-100	DN50–DN150	PN100	Alloy Steel	Socket Weld/Flanged	-29°C to 540°C	ASME B16.34, EN 13709

 

 

 

Petroleum and Chemical Industry
National Standard Stop Valve is widely used in petroleum, natural gas, chemical, and other industries, especially in pipeline systems with high temperature, high pressure, and corrosive media. It can effectively control the flow of fluids and ensure the safety and efficiency of the production process.

 

Power and Energy Industry
In energy industries such as thermal power and nuclear power, the high-pressure adaptability and precise flow regulation capability of the National Standard Stop Valve make it a key equipment. Especially in steam pipelines, the valve can effectively control the flow and ensure the stable operation of the system.

 

Shipbuilding and Marine Engineering
Models such as J41F-25R are made of PTFE-lined steel, which is specially designed for marine environments and can effectively prevent seawater and salt spray from corroding equipment. It is widely used in offshore platforms, ships, and other environments to ensure the safety and stability of marine engineering.

 

Municipal and Industrial Facilities
National Standard Stop Valve is also widely used in municipal water supply, HVAC, and other fields. Its precise flow regulation capability makes it play an important role in industrial pipe networks and infrastructure to ensure the efficient operation of pipeline systems.

 

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