The V type ball valve is a special kind of ball valve. Its closure member is the V opening on the spherical segment. With sharp edges, the V opening forms shearing action with the seat during the rotation process of the spherical segment. It has powerful cutting force to the media. The V opening on the spherical segment forms a sector area with the seat flow channel. During the rotation process, it can change the flow channel sectional area and carry out precise control of media. It is a control valve with rotary motion. Its has the same sealing performance as ordinary ball valves, so that it has both control and on-off functions. When equipped with a pneumatic or electric actuator, it can be widely applied in industrial process automatic control systems.
Body integral structure: The body adopts an integral side entry structure with good structural rigidity, which does not easily cause external leakage.
Upward and downward self-lubricating bearing: The body is installed with upward and downward lubricating bearing, which has high contact area with the stem, high carrying capacity, low friction coefficient, so that the valve torque is reduced.
According to the requirements for media and service conditions, the seat can use metal hard seal or PTFE soft seal: The sealing face of the metal hard seal seat is subject to hard alloy overlaying welding, the ball face is subject to hard chrome plating or spray welding, ion nitriding and other hardening treatment, so as to prolong service life of the sealing face and improve heat resistance. The soft seal PTFE seat or reinforced PTFE seat has good sealing performance, corrosion resistance and wide application range.
Good economic utility: The body is light and the stem torque is low. The pneumatic or electric actuator with which it is equipped is small. Compared with other types of control valves, its performance-price ratio is high.
Wide adaptability to media: The media will not be easily deposited in the cavity due to the shearing force between the V opening and seat, and the smooth and valve cavity flow channel. Therefore, in addition to being suitable for liquid media, it is more suitable for system control of media containing fibers and solid particles.
Small flow precise control: Small Cv value precise control can be realized through the machining of special V opening in the small-size plug.
Body Type: integral type
Nominal diameter: DN15~500(NPS1/2~16)
Nominal pressure: PN 1.6~4.0Mpa(Clsaa150~300)
Type of connection: flanged
Material: A216-WCB, A351-CF8, A351-CF8M, A351-CF3,
A351-CF3M, A217-WC6, A217-WC9
Bonnet: standard type: -29~250
ºChigh temperature type: 250~425
ºCPacking: PTFE, flexible graphite, nickel-based wire reinforced flexible graphite
Trim Plug type: cast ball with V notch
Plug material: A182-F304, A182-F316
Seat material: soft seal: PTFE, RPTFE, PPL
hard seal: A182-F304, A182-F316
Flow characteristic: approximate equal percentage
Adjustable ratio: 300:1
Rated Cv value: See table 5 for details.
Rated travel: 0~90Ў
Seat Leakage class: soft seal: ANSI B16.104 class VI
Hard seal: ANSI B16.104 class IV, V
Outline dimensions: See table 12 for details.
DN(mm)
Nominal diameter DN | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 |
(mm)
Seat diameter | 20 | 26 | 33 | 40 | 53 | 66 | 86 | 104 | 128 | 170 | 212 | 255 | 320 | 368 | 414 | 460 |
Cv
Flow capacity Cv value | 29 | 41 | 82 | 117 | 210 | 327 | 513 | 794 | 1155 | 2054 | 3209 | 4668 | 7177 | 11437 | 14479 | 17876 |
Zhejiang DECA Control Valve Meter Co., Ltd., a High-tech Enterprise in Zhejiang Province, specializes in designing, developing, producing and selling control valves, including control valves, gate valves, ball valves, butterfly valves and other special valves. Our company is a first-tier supplier of SINOPEC, an approved material supplier of CNPC, an approved supplier of CNOOC, an approved material and equipment supplier of CNAF, an approved supplier of CHEMCHINA, and a network member of National Chemical Automation Design Center.
Located in Juyu Town Industrial Park, Wencheng County, Wenzhou City, our company now has a plant area of 19, 000 m2 and a construction area of 20, 000 m2. With perfect control valve production, machining, inspection and testing equipment, we have established the CAD design center and physical & chemical inspection center to effectively ensure product quality and improve production efficiency. In addition, we have a powerful technical team, as well as a skilled and efficient management team. Over the years, on the basis of introducing advanced technologies from abroad, we have kept enterprising, pioneering and innovating to successively develop a series of new control valves that represent international advanced level.
Our company has successively obtained the ISO9001 international quality system certification, API 6D and API609 certification, API607 and API6FA valve fire-safe test certification, HSE health safety environmental management system certification, safe production standardization certification and class A manufacturing license of special equipment (pressure pipe parts) of the People's Republic of China. Our products have been awarded 15 national patents and 2 scientific and technological progress prizes in Ruian City. 1 new product has been included into the technology planning in Ruian City and 7 products have passed the new product appraisal in Zhejiang Province. In addition, our company is one of China's Top 500 Quality Enterprises and a Class AAA Bank Creditable Enterprise.
Our control valves are sold well in various industries such as petroleum, natural gas, chemical industry, power station, metallurgy, light industry, pulp & paper, medicine, food, urban construction, environmental protection, etc., winning high comment from users with good achievements. In addition, our products are also exported to MID East, Iran, Kazakhstan and other countries and areas.
For years, by sticking to the road of "human oriented, booming the business by science and technology", our company has established extensive and close cooperation with relevant petrochemical design institutes and industrial automation instrument research institutes in China to provide old and new users with high quality control valves and excellent after-sales service. By following the consistent principle of "user foremost, quality first and sincere service", we warmly provide users with technical consultation, technical lectures, product model selection guidance, etc. We also undertake the obligation of three-guarantee and maintenance. We will constantly improve technology and increase equipment, and continue to cooperate with customers sincerely to seek mutual benefit and jointly create a brilliant future.
