Stainless Steel Pneumatic Control Butterfly Valve
| Price: |
US $ 500-60000/Piece |
| Min Order: |
1/Piece |
| Pay Type: |
L/C,T/T,D/P,Western Union |
| Prod Model: |
deca-b |
| Connection Form: |
Flange |
| Structure: |
Three-Eccentric Sealing |
| Seal Form: |
Auto Sealed |
| Work Pressure: |
High Pressure (',10.0mpa< Pn <80.0mpa) |
| Working Temperature: |
Low Temperature (',-100??C
|
| Material Of Seal Surface: |
Metal Hard Sealed |
| Application: |
Industrial Usage |
Product Description
The three-eccentric high-performance seal butterfly valve is a new generation seal butterfly valve independently designed and developed by our company after referring to advanced technologies at home and abroad. According to different seal assemblies at the body, the butterfly valve has three types: The first type is to adopt a multi-level compound seal structure.
The seal ring is made of soft and hard layered stainless steel sheet and elastic sealing gasket, making it have the advantages of metal hard seal and elastic seal. The seat sealing face is subject to integral overlaying welding of temperature and corrosion resistant alloy materials.
The contact face of the seal ring and seat of the valve adopts a "cone-in-cone" structure, and the two cones are both bevel cones.
The contact angle between the seal ring and metal seat produces light "wedge effect", making the seal ring produce flexible movement and radial compression. Thanks to the even contact between the seat and seal ring, the tightest shut-offcan be realized by using the lowesttorque, featured by high reliability and stability and long sealing face service life. The second type is to adopt a soft seal structure. Its seal structure is similar to that of the multi-level compound seal buttery valve, with the difference that the seal ring is made of integral PTFE materials, which are more suitable for applications with high on-off frequency and high requirements for sealing face corrosion resistance. The third type is to adopt a metal hard seal structure.
The sealing pair does not contain any nonmetals. The seat sealing face and the seal ring sealing face are subject to Stellite overlaying welding, ensuring anti-erosion during the use. The sealing pair adopts a "hard-contact-hard" structure. Once the valve is closed, there is no need to adjust through the closing position, and the sealing is very reliable. The valve is widely applied in such industries as petroleum, chemical industry, light industry, oil terminal, metallurgy, electric power, etc. Feature
1. Compact structure: low volume, light weight and easy maintenance
2. Smooth flow channel: low flow resistance, low pressure drop and high flow
3. Three-eccentric multi-level compound seal butterfly valve: It uses the unique cam effect, so that during the valve's 90 ˇtravel the seat is totally disengaged from the disc seal ring without any friction.
Three-eccentric soft seal butterfly valve: The sealing pair is made of integral PTFE materials, which are suitable for applications with high medium cleanliness, frequent valve on-off and high requirements for sealing pair corrosion resistance. Especially it can ensure that its service life is basically the same as that of the pipe in the thermal system.
Three-eccentric metal seal butterfly valve: The sealing pair adopts a full metal seal structure. The sealing pair adopts a "hard-contact-hard" structure as shown in figure 1 pneumatic three-eccentric butterfly valve. The seal has a long service life. It is suitable for service conditions where the medium working temperature is extreme, the erosion is severe and there is the occurrence of "crystallization".
4. Strong anti-wear performance: The disc adopts a three-eccentric structure and the sealing face is subject to hard alloy overlaying welding with good anti-wear performance.
5. Valve flow characteristics: Approximate equal percentage. Control and shut-off can be realized. body main technical parmaneters
| body type | two-piece,three-piece |
| Nominal diameter | DN15~500(NPS1/2~24) |
| Nominal pressure | PN 1.6~4.0Mpa(Clsaa150~600) |
| Type of connection | flanged |
| Material | A216-WCB, A351-CF8, A351-CF8M, A351-CF3,
A351-CF3M, A217-WC6, A217-WC9 |
| Bonnet: standard type | -20~250ºC |
| high temperature type | 250~525ºC |
| Packing | PTFE, flexible graphite, nickel-based wire reinforced flexible graphite |
Trim main technical parmaneters
| Plug type | O straight-through type |
| Plug material | A182-F304, A182-F316 |
| Seat material/soft seal: | PTFE, RPTFE, PPL |
| hard seal | :A182-F304, A182-F316 |
| Flow characteristic | quick opening |
| Rated Cv value: | See table 4 for details. |
| Rated travel | 0~90ºC |
| Seat Leakage class/soft seal | ANSI B16.104 class VI |
| Hard seal | ANSI B16.104 class V(hard seal class VI for special orders) |
| treatment for body | plug.ball.seat.stem etc |
Table 1: design and manufacturing standards
Standard |
Design and
manufacturing |
Face-to-face
dimensions |
Flange
dimensions | Pressure and
temperature ratings | Inspection
and testing |
Leakage class |
National standards and
industry standards | GB/T12224
GB/T12238
JB/T8527 | GB/T12221 | GB/T9112~9124
HG/T20592~20635
SH3406JB/T79 | GB/T9124
GB/T12224 | JB/T9092
GB/T13927 | GB/T4213 |
American Standard | API609 | API609 | ASME B16.5
ASME B16.47 | ASME B16.34 | API598
| ANSI/FCI70-2
ASME B16.104 |
Other national standards | | JIS B2002
ISO5752 | EN1092 | | | |
2: Table 2: Actuator
Model
Item |
Cylinder actuator |
Electric Actuator |
| AT/AW | ATK/AWS |
Determined according to
ordering requirements |
Double-acting |
Single action |
Usage | ,Shut off ,Adjust | ,Shut off ,Adjust |
Power supply | :0.4~0.7MPa(G)
Air supply: 0.4 ~ 0.7MPa (G) | :220VAC/50HZ,380VAC/50HZ
Power: 220VAC / 50HZ, 380VAC / 50HZ |
Connection | :NPT1/4-Φ8, NPT3/8-Φ12, NPT1/2-Φ16
(),.
All pneumatic valves of our company are provided with ferrule fittings connected to air supply pipelines of users. (See the specification of pneumatic valves for the sizes.) The ferrule fittings for air supply can also be supplied according to user requirements. | :
Electrical Connection: With electric actuator configuration or user requirements |
| | :24VDC,220VAC
:4~20mA,4~20mA+HART
:GB/T4213-2008,"C",:±2.0%,:≤2.0%,:≤0.8%,: ≤+2.5%
Shut off: 24VDC, 220VAC
Control with positioner: 4~20mA, 4~20mA+HART
Control with positioner: with positioner index class "C" in accordance with GB/T4213-2008, intrinsic error: ˇ2.0%, hysteresis error: ˇ2.0%, dead band: ˇ0.8%, full travel error: ˇ+2.5% | :4~20mA
Shut off: On / Off
Adjust: 4 ~ 20mA |
Action type | :
:
Shut off: When the solenoid valve is powered on, the valve is on or off.
Adjust: The valve is on or off with the increase of positioner input signal. | :
:
Shut off: The valve is on or off when powered on
Adjust: with the input signal increases valve opening or valve off |
Allowable ambient
temperature | -40ºC~+80ºC | -40ºC~+80ºC |
Accessories |
Hand operated mechanism, solenoid valve, electric/pneumatic valve positioner, transponder switch, air filtering pressure relief valve, speed increaser, position holding valve, air control valve, etc. |
Hand operated mechanism, transponder switch, input/output switch signal, surge protector, local switch, selector switch, etc. |
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.
