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| Media: | Water |
| Material: | Carbon Steel |
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Bi-directional metal sealing rotary ball valve is a combination of superior sealing performance of ball valve and advantage of butterfly valve in structure and properties. It not,only has the advantage of double directional sealing, long life time of ball valve,but also has the advantage of small size,adjustable, light weight of butterfly valve. Its essence,is a eccentric hemisphere valve with butterfly structure.Sealing principle, combined with the front-end sealing of fixed ball valve and forced sealing of eccentric butterfly valve,,there by achieving the bi-directional cutting fluid no matter pressure is high or low. On the two sealing surface of valve,plasma spraying and surfacing process can be used to,different hardness to form hard alloy .lt can automatically align the center(self-adaption),automatically compensate for wear,automatically put in high hermetical pressure,,and there is no friction between the seal when the valve instantly opening and closing .when opening the valve, the disc projection continuously retracts and goes backwards;,when closing the valve, the disc projection continuously swells and moves forward. Its advantages of short structure and small volume allow for the possibility that valve with,large size can be made. The valve has the features of double direction sealing, convenient installation,reliable operation, which has been a major technology revolution in the,valveindustry.
Benefits
3.Floating valve seat,bi-directional sealing function and sealing performance
4.Easyto operate, smalloperating torque, so actuator cost will be largely reduced
| DN | PN | Test pressure (MPa) | Temperature(ºC) | |
| Shell test | Sealing test | |||
| DN500-3000 | 6 | 0.9 | 0.66 | Basic type -29ºC~200ºC High temperature -29ºC~425ºC |
| 10 | 1.5 | 1.1 | ||
| 16 | 2.4 | 1.76 | ||
| 25 | 3.75 | 2.75 | ||
| 40 | 6 | 4.4 | ||
| Class 150 | 3 | 2.2 | ||
| Class 300 | 7.5 | 5.5 |
Henan Quanshun Flow Control Technology Co., Ltd. is a subsidiary of the Quanshun Group, a high-tech enterprise integrating the research and development, design, casting, manufacturing, sales, and service of intelligent industrial valves. Established in 2005 with a registered capital of 100.08 million yuan, the company operates three bases. It has been recognized as a provincial-level enterprise technology center, an advanced enterprise in fixed asset investment in Zhengzhou High-tech Zone, and an outstanding economic contributor. It is also a national high-tech enterprise with high growth potential. The company is the core drafting unit for eight national and industry standards, including the "Eccentric Semi-ball Valve," "Bidirectional Metal Hard Sealing Butterfly Valve for Urban Heating," "Insulation Jacket Valve," "Alumina Slurry Valve," "V-Ball Valve," "Hydraulic Control Valve," "Piston Flow Control Valve," and "Rotary Ball Valve." The company holds nearly 70 patents, including invention patents and national utility model patents. The "Quanshun" brand valves have earned various honors, such as provincial high-quality branded products, energy-saving products, key industrial products, Henan Province's first (set) major technical equipment products, "Specialized, Refined, Featured, and Innovative" enterprise recognition, and Henan Province's "Small Giant" in technology filed.
Q: What is the cause of the leakage at the stem extension?
A: There are two reasons, one is the sealing ring damage; Second, the sealing ring wear, aging.
Q: How to solve the leakage at the stem extension?
A: The solution is to replace the sealing ring.
Q: What causes leakage at the valve and pipe connection?
A: First, the sealing surface is damaged or contaminated by dirt; Second, gasket failure; Third, the pipe flange pressure is uneven or not pressed.
Q: How to deal with leakage at the connection of valve and pipeline?
A: The following measures can be taken: repair the sealing surface or clean up the dirt; Replace the gasket; Press the flange bolt evenly.
Q: What is the cause of leakage in the valve?
A: There is mainly debris on the sealing surface, or the sealing surface is damaged.
Q: How to deal with internal leakage of valve?
A: Remove the debris on the sealing surface and repair or replace the sealing pair.
Q: What is the problem caused by the inflexibility of valve opening and closing?
A: First, the executive mechanism failure; Second, there are foreign objects blocked valve plate.
Q: How to solve the valve opening and closing is not flexible?
A: When the actuator fails, repair or replace the actuator; If foreign objects block, remove foreign objects, and be careful not to damage the sealing surface.
Q: Can the valve actuator adjust itself?
A: The valve actuator has been debutted before leaving the factory, and non-professional personnel are forbidden to adjust.
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