Control Valve
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Designed for efficient on-off service and dependable pipeline isolation, the O Type Ball Valve uses a spherical closure element with a full circular bore to provide a direct flow path and reliable shut-off. The quarter-turn operating mechanism allows rapid opening and closing, while the floating or trunnion-supported ball configuration can be selected according to pressure, size, and service requirements. Its streamlined passage helps minimize turbulence and pressure loss during normal operation.
The O Type Ball Valve is suitable for oil & gas, natural gas, petrochemical, chemical processing, water treatment, power generation, and general industrial applications. With a range of body materials, seat configurations, pressure ratings, and actuation options, it provides a flexible solution for systems requiring quick isolation, efficient flow passage, and dependable sealing performance.
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Product description: |
O Type Ball valve |
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Model: |
Q641WO Type Ball valve |
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Nominal diameter: |
NPS 2"~16" |
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Operating temperature: |
-46℃~121℃ |
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Operating pressure: |
Class 150Lb~1500Lb |
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Material: |
WCB、LCB、LCC、15Cr1MoV、Cr5Mo、0Cr18Ni9Ti、00Cr18Ni10、0Cr18Ni12Mo2Ti |
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Design standard: |
GB/T 12237、JB/T7745 |
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Structural length: |
GB/T 12221、JB/T1686 |
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Connecting end: |
GB、JB、SH、HG |
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Test standard: |
JB/T 9092、GB/T 13927 |
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Operation method: |
Manual、Gear、Electric、Pneumatic、Manual-Air-Hydraulic |
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Application fields: |
Water, petroleum and natural gas |
Provides precise automatic control of flow, pressure, temperature, and liquid level for optimized process performance.
Full Circular Bore
The spherical ball provides a smooth flow passage when fully open, helping reduce pressure loss and turbulence.
Quarter-Turn Operation
A 90-degree rotation enables rapid isolation and efficient valve operation.
Reliable Shut-Off
Precision-matched ball and seat surfaces provide effective sealing across a range of process conditions.
Low Flow Resistance
The streamlined bore minimizes obstruction to the medium, supporting efficient pipeline operation.
Flexible Ball Support Options
Floating and trunnion-mounted configurations can be selected according to valve size, pressure class, and operating torque requirements.
Low Operating Torque
Optimized sealing geometry helps limit friction and operating loads, facilitating manual or automated operation.
Compact Installation
The quarter-turn configuration provides an efficient arrangement for piping systems where quick operation and limited space are important.
Multiple Seat Materials
Soft-seated, fire-safe, or metal-seated configurations can be selected for different media, temperatures, and service conditions.
Automation Ready
Compatible with pneumatic, electric, hydraulic, and other actuation systems for remote or automated operation.
Broad Industrial Application
Suitable for oil & gas pipelines, natural gas systems, petrochemical plants, refineries, chemical processing, water systems, and general industrial services.
Chemical Industry
Ball valves, butterfly valves, gate valves, globe valves, check valves, and control valves ensure safe fluid isolation, precise process control, and reliable operation in demanding chemical processing applications.
Oil Industry
Engineered for reliable isolation, flow regulation, and backflow prevention, our valve solutions support upstream, midstream, and downstream oil production and refining operations.
Natural Gas
Providing leak-tight sealing, dependable flow control, and safe pipeline operation for natural gas transmission, storage, LNG, and distribution systems.
Metallurgy
Built to withstand high temperatures, abrasive media, and harsh operating conditions in steelmaking, smelting, and metallurgical processing.
Power Generation
Ensuring reliable isolation, accurate flow control, and long-term performance in steam, boiler, turbine, and power plant systems.
Pharmaceutical
Delivering hygienic, precise, and contamination-free flow control for pharmaceutical manufacturing and clean process applications.
Steel Industry
Designed for high-temperature, high-pressure, and severe-service conditions in iron making, steelmaking, rolling mills, and auxiliary process systems.
New Energy
Supporting hydrogen, LNG, carbon capture, battery materials, and renewable energy projects with advanced valve solutions for safe and efficient process control.
-196°C Cryogenic Liquid Nitrogen Test System
Simulates ultra-low-temperature operating conditions to verify valve sealing performance and reliability for cryogenic applications.
Brinell, Rockwell & Vickers Hardness Tester
Ensures material hardness meets international standards for strength, durability, and long-term performance.
Large-Scale Coordinate Measuring Machine (CMM)
Provides high-precision dimensional inspection to ensure machining accuracy and product consistency.
Valve Life Cycle Testing System
Evaluates valve durability and operational reliability through repeated opening and closing cycle tests.
High & Low Temperature Test Chamber
Verifies valve performance and stability under extreme temperature conditions.
High Temperature Aging Test Chamber
Assesses long-term material stability and product reliability under continuous high-temperature exposure.
Desktop SPECTRO Optical Emission Spectrometer (Germany)
Performs rapid and accurate material composition analysis to ensure full material traceability and compliance.
Our engineering team evaluates these factors to ensure long-term reliability and regulatory compliance.
Control valves automatically regulate flow, pressure, temperature, and liquid level to maintain stable and efficient process operation.
A control valve receives signals from a controller and adjusts the valve opening through an actuator to achieve the required process conditions.
Control valves can be equipped with pneumatic, electric, or hydraulic actuators, depending on the application requirements.
Q How do I select the right control valve?
Valve selection depends on process media, flow rate, pressure, temperature, valve size, and the required control accuracy.
Q What is the difference between a control valve and an on/off valve?
An on/off valve is designed for isolation, while a control valve continuously modulates flow to maintain precise process parameters.
Q Which industries commonly use control valves?
Control valves are widely used in chemical processing, oil & gas, LNG, power generation, pharmaceutical manufacturing, food processing, and industrial automation systems.
Hangzhou Kaiwei Valve Group Co, Ltd, established in 2015, is a cutting-edgeindustrial enterprise that specializes in the R&D, design, casting, production,and sales of fluid control products and services
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