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V Type Ball Valve
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| <a href="http://www.highmpavalve.com/ball-valve/v-type-ball-valve/">V Type Ball Valve</a> Ball valves are designed to be used in a variety of applications and markets, but a V-port ball valve offers the added ability to be used as a control valve where necessary. The main differentiator is a contoured V-port in the ball, most commonly available with a 15掳, 30掳, 45掳, 60掳, or 90掳 angle, which produces an equal percentage flow characteristic for better control. V-ball valves are known to offer a variety of advantages in flow control applications, especially when compared to larger and more expensive control valves. Low Pressure Drop The V-port design allows material to flow straight through the valve, minimizing pressure drop across the valve. V-ball valves also have higher flow coefficients (Cv) compared to other control valve types of a similar size; this means that a smaller V-ball valve can be used to achieve the same flow rates as a comparable control valve of a larger size Bubble Tight Shut-Off V-port ball valves use the 鈥渇loating ball principle, which will provide a bubble tight shut-off in addition to the modulating flow control. When the valve is closed, upstream pressure pushes the ball against the downstream seat, thus enhancing the seal. These can control or shut off bi-directional flow, which proves to be especially beneficial in gas applications. Comparable control valves often require additional shut-off valves; V-ball valves eliminate the need for these additional valves, saving the user cost and reducing the number of overall components in the system. Precise Flow Control Precision machined V-ball valves are available with 60掳 and 90掳 V openings and offer equal percentage flow characteristics. As the ball rotates, desired flow rates can be achieved by positioning the ball anywhere between 0掳 and 90掳. Response time is also increased due to the ability to use smaller actuators with these valves. High Shut-Off Pressure V-ball valves feature a quarter turn (90掳) ball rotation, allowing them to operate and shut off at much higher working pressures. Because of this, smaller lower torque actuators can be used, which results in cost savings and higher efficiency in the user鈥檚 application. The range of GZP Metal seat Ball valve design is as follows: 鈼?Size: 2鈥?to 8鈥?DN50 to DN200 鈼?Pressure: Class 150lb to 600lb PN10-PN100 鈼?Material: Carbon steel and stainless steel and other special materials. NACE MR 0175 anti-sulfur and anti-corrosion metal materials 鈼?Connection ends: ASME B 16.5 in raised face(RF), Flat face(FF) and Ring Type Joint (RTJ锛?/p> ASME B 16.25 in butt welding ends. 鈼?Face to face dimensions: conform to ASME B 16.10. 鈼?Temperature: -29鈩?to 425 鈩?/p> GZP valves can be equipped with gear operator, pneumatic actuators, Hydraulic actuators, Electric actuators, bypasses,locking devices,chainwheels,extended stems and many others are available to meet the customers鈥?requirements. Technical data DesignAPI 6D, ASME B16.34, ISO 14313, ISO 10423, ISO 17292 Pressures rangeANSI 150 ~ANSI 2500 ,PN10~PN420 Size rangeDN50(2") ~DN200 (8") Body MaterialCarbon Steel, Stainless Steel, Alloy Steel, Duplex Steel.etc. NACE MR-01-75/NACE MR-01-03 Special Requirements Face to faceAPI 6D, ASME B 16.10,EN 558,DIN3202 Fanged RF, FF, RTJ EndsASME B16.5 鈮?DN600 (24") BS 4504,DIN 2543-2545,EN1092 Butt-Weld BW EndsASME B16.25 ,DIN 3239,BS 2080, EN 12627 Temperature range-29掳~ 425掳C Design feature ConstructionOne,Two or Three piece body and Welded body PortFull bore and Reduced bore Ball TypeV- TYPE StemBlowout-proof stem Seat SealingFront-seat sealing, Back-seat sealing, bi-directional sealing Valve OperationGear,pneumatic,Hydraulic,Electric actuators. By passes,locking devices,extended stem,etc Fire SafeAPI 607, BS 6755, ISO 10497-5 Other designAnti-static design,automatic pressure relief design, emergency grease injection design, drain valve, anti-corrosion design, anti-sulfur design,etc Inspection and Test Visual InspectionMSS SP-55 Material InspectionPMI Test----Chemical Analysis HB Test---Hardness Test UT---Ultrasonic Test RT---Radio-graphic Test MT---Magnetic Test NDT Test Non-destructive Dimension inspectionAccording to drawings Valve Inspection and TestAPI 598,DIN 3230,EN 12266,BS 5146 What are V-Port Ball valves? A V-Port Ball Valve has either a 'v' shaped seat or a 'v' shaped ball. This allows the orifice to be opened and closed in a more controlled manner, with a closer to linear flow characteristic. This type of valve is also known as a control valve because the flow velocities need to be controlled depending on the application. How do V-Port Ball valves work? When v-port valves are in the closed position, and opening commences, the small end of the 'v' opens first. This allows stable flow control during this stage. The design generally calls for a more robust construction because the higher velocities of fluids might damage standard valves. Although a control valve, v-port valves are not considered as accurate as a globe valve, pressure regulating valve, balancing valve or needle valve. Applications using V Port Ball valves? Ball valves are used in many applications and markets. These can include transmission and storage, gas processing, and industrial, to name but a few. V-Port Ball valves are also commonly used in water treatment, food processing, acid transfer, agriculture, bleach chemicals, leaching acid, waste processing and pharmaceuticals.V Type Ball Valve website:http://www.highmpavalve.com/ball-valve/v-type-ball-valve/ |
