This is a high-pressure rising stem Chemical Industry globe valve. The valve body is made of A105N high-pressure carbon steel, with a black anti-corrosion coating on the surface. The connection method is welded (without external flanges), and it is operated manually via a handwheel. Its core function is to control the flow of high-pressure media. This is a small-diameter rising stem Chemical Industry globe valve used in industrial high-pressure pipelines.
Parameters
|
Valve body material |
A105N |
|
Applicable media |
Oil,Gas,Water |
|
Connection |
Welding |
|
Power |
Hand wheel |
|
Sealing Type |
Hard Seal |
|
Warranty period |
12 months |
|
Certificate |
CE ,IS09001 ,IS014001,IS045001 |
Advantages
Status Visualization
The exposed stem design allows on-site personnel to quickly confirm the valve's open/closed status, reducing the risk of misoperation;
Reliable Sealing
Hard sealing + welded structure significantly improves sealing stability under high-pressure conditions, reducing leakage risks;
Durable Material
A105N carbon steel offers both strength and temperature resistance, suitable for most media in the petroleum, chemical, and other industries;
Convenient Operation
The multi-spoke handwheel design provides an operating torque suitable for high-pressure conditions, ensuring high precision in manual control.
Features
Rising Stem Design
The valve stem moves synchronously with the valve core, allowing for direct observation of the stem's displacement and intuitive determination of the valve's open/closed state;
High-Pressure Adaptation
Class 600 pressure rating + A105N material, capable of withstanding temperatures from -29℃ to 425℃ and high-pressure conditions up to 10MPa;
Hard Seal Design
The valve core and seat utilize metal-to-metal sealing (such as hard alloy overlay welding), providing resistance to erosion and wear, suitable for harsh industrial media;
Welded Connection
No external flanges; the welded ports eliminate the risk of leakage under high pressure, meeting the sealing requirements of high-pressure pipelines.
Application Scenarios
Petrochemical industry
Wellhead instrumentation pipelines, high-pressure process sampling lines, hydraulic system pipelines;
Natural gas industry
Branch control of high-pressure gas transmission pipelines, small-diameter pipelines in pressure regulating stations;
Power industry
High-pressure cooling water systems and steam pipeline isolation control in power plants;
Mining and metallurgy
High-pressure slurry transportation pipelines, hydraulic equipment control lines.
Production Process
Material Melting
Carbon steel is melted according to the A105N standard formula to ensure that the chemical composition and mechanical properties meet the requirements;
Forging and Forming
Valve bodies, bonnets, and other blanks are processed through forging to ensure structural strength;
Precision Machining
Key parts such as sealing surfaces, welding ports, and threads are machined using CNC equipment to ensure dimensional accuracy;
Surface Treatment
The valve body is treated with sandblasting and anti-corrosion coating (black), and the sealing surface is hard-faced with alloy;
Assembly and Debugging
Valve core, stem, handwheel, and other components are assembled, and the opening/closing flexibility and sealing performance are tested;
Quality Inspection and Shipment
Hydrostatic/pneumatic pressure tests (at 1.5 times the nominal pressure) and sealing performance tests are conducted, and the product is shipped with a certificate of conformity.
Routine maintenance
Regular Inspection
Check the wear of the valve stem threads and handwheel drive components monthly, and test the valve's opening and closing flexibility quarterly;
01
Lubrication and Maintenance
Apply high-temperature grease to the valve stem threads and handwheel bearings every six months to prevent rust and seizing;
02
Seal Monitoring
Regularly (e.g., quarterly) check for leaks in the sealing surface through pressure testing. If leaks are found, grind or replace the sealing components promptly;
03
Cleaning and Protection
Keep the valve body surface clean, and install protective covers on welding ports when not in use to prevent impurities from entering;
04
Emergency Handling
If the valve stem seizes, try applying lubricant to free it before attempting forceful operation to avoid damaging the components.
05
Working Principle
When the handwheel is rotated, the valve stem (rising stem) moves up and down along the threads, causing the valve core to move closer to or further away from the valve seat:
Closed state: The valve core is tightly fitted against the valve seat, blocking the flow of the medium;
Open state: The valve core moves upward, allowing the medium to pass through the valve body channel;
The rising stem design allows for visual observation of the valve stem displacement, indicating the degree of valve opening or closing.
Certifications
ISO certification is not only a "qualification threshold" for our company, but also a comprehensive reflection of our company's quality, compliance and competitiveness, driving our company's transformation from "low-end manufacturing" to "high-end standardization".
Company Profile
SND is a leading valve manufacturer specializing in high-performance hydraulic control valves and innovative flow solutions. Leveraging international patents and technological collaborations, we strictly adhere to the ISO 9001 quality management system, ensuring zero defects in our products and earning recognition as an industry benchmark.
Our advanced automated manufacturing processes and integrated network management ensure product reliability and have been approved by China's construction authorities. With a nationwide sales and service network, we are committed to continuous innovation, developing next-generation valve technologies and providing globally leading, reliable, and efficient flow control solutions.
FAQ
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