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Electric three eccentric butterfly valve
- sell：021-32051999
- sell：021-32050777
- fax：021-66099555
Details
- Product Introduction
- Service Promise
- Ordering Process
Electric tri-eccentric butterfly valve is composed of rotary electric actuator and tri-eccentric butterfly valve body. The valve body adopts tri-eccentric metal hard sealing structure. The valve seat and sealing surface are made of stainless steel. It has good corrosion resistance and bidirectional sealing function. The friction between the butterfly plate and the valve seat of electric tri-eccentric butterfly valve is less and the life is longer. It has wide application scope and convenient maintenance. Electric tri-eccentric butterfly valve is widely used in petroleum, chemical, electric power, metallurgy, steel, paper, medicine, food, textile, light industry and other industries.
Main features of electric three eccentric butterfly valve
1. The valve adopts three eccentric sealing structure, and the valve seat and butterfly plate wear little.
2. The sealing ring is made of stainless steel. It has the double advantages of hard metal sealing and elastic sealing. It has excellent sealing performance, corrosion resistance and long service life, no matter at low and high temperature.
3. Butterfly plate sealing surface is made of cobalt base cemented carbide, the sealing surface is wear resistant and has long service life.
4, large diameter butterfly plate adopts quilting structure, high strength, large flow area and small flow resistance.
5. Electric tri-eccentric butterfly valve has two-way sealing function. It can be installed in any direction without the restriction of the flow direction of medium or the influence of space position.
6, the driving device can be installed at multiple stations (rotating 90 degrees or 180 degrees) for user convenience.
Main technical parameters of electric three eccentric butterfly valve
valve body
type of body | Straight through casting valve |
Nominal path | DN50～1000mm |
Nominal pressure | PN1.0、1.6、2.5MPa |
Flanges standard | JIS B220、JB/T79、ANSI B16.5-1981、GB/T9113、HG20594-97、HG20618-97等 |
Connection form | Flange type |
Valve cover form | One in one |
Capping type | Pressing plate type |
Sealed packing | V PTFE packing and flexible graphite packing |
Valve plate form | Sphenoid |
Flow characteristics | Approximate equal percentage |
Actuator type | DZW multi turn electrical assembly, DSR compact electrical assembly, HQ intelligent electric installation. |
Main technical parameters | DZW multi turn electrical assembly, DSR compact electrical assembly, HQ intelligent electric installation. |
Protection level: quite IP67, flameproof logo: Exd II BT4, manual operation function: handle. | |
Ambient temperature: -25 ~ +70 C, ambient humidity: less than 95% |
Note: for detailed actuator parameters, please go to the electric actuator page for inspection.
Main material of electric three eccentric butterfly valve
1 | base | HT200、WCB、CF3、CF3M、CF8、CF8M |  .jpg) 法蘭式 | .jpg)  對夾式 |
2 | Lower sleeve | 銅合金、304、316 | ||
3 | valve body | HT200、WCB、CF3、CF3M、CF8、CF8M | ||
4 | Seal ring | NBR丁晴橡膠、PTFE、PPL、304、316 | ||
5 | Seal ring | HT200、WCB、CF3、CF3M、CF8、CF8M | ||
6 | Fixed pin | 25、35、45 | ||
7、8 | Upper and lower valve shaft | 2Cr13、304、316、316L | ||
9 | Upper shaft sleeve | 銅合金、304、316 | ||
10 | filler | 聚四氟乙烯/柔性石墨 | ||
11、12 | Packing gland assembly | HT200、WCB、CF3、CF3M、CF8、CF8M |
Nominal pathDN (mm) | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 |
Rated discharge coefficient Cv | 110 | 180 | 232 | 368 | 656 | 1000 | 1760 | 3390 | 4730 | 6700 | 8900 | 10500 | 14800 | 20500 | 31000 | 43000 | 55600 | 70700 |
Allowable pressure difference (MPa) | Nominal pressure | |||||||||||||||||
Action range | 0～90° | |||||||||||||||||
Leakage | Press GB/T4213-92, which is 10-4 of Kv value. | |||||||||||||||||
Basic error | ±2.5% | |||||||||||||||||
Return difference | ±2.5% | |||||||||||||||||
dead zone | 1% | |||||||||||||||||
Adjustable range | 50:1 | |||||||||||||||||
Three eccentric sealing principle of electric three eccentric butterfly valve
Since the center line of the seat is then formed at a beta angle with the center line of the valve body on the basis of the double eccentric sealing butterfly valve, the offset result can be seen from the A-A section of Fig. 2. When the triple eccentric hard sealing butterfly valve is fully opened, the butterfly plate seal surface will completely detach from the seat seal surface, and the butterfly plate seal surface and the butterfly plate seal surface will be completely open. A clearance Y is formed between the sealing surfaces of the valve body and that of the double eccentric sealing butterfly valve. It can be seen from the diagram that the tangent of the turning trajectory of the sealing surface of the butterfly plate and the sealing surface of the valve seat form an angle of theta 1 and theta 2 due to the formation of the position of the beta angle. When the butterfly plate opens and closes, the sealing surface of the butterfly plate gradually disengages from the sealing surface of the valve seat and gradually presses in, thus completely eliminating the mechanical wear and abrasion between the two sealing pairs of the butterfly valve when the butterfly plate opens and closes. When the butterfly valve is opened from 0 degrees to 90 degrees, the sealing surface of the butterfly plate will immediately detach from the sealing surface of the valve seat at the moment of opening. When the butterfly valve is closed from 90 degrees to 0 degrees, the sealing surface of the butterfly plate will contact and press the sealing surface of the valve seat only at the moment of closing.
Nominal diameter DN (mm) | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 |
L | 108 | 112 | 114 | 127 | 140 | 140 | 152 | 165 | 178 | 190 | 216 | 222 | 229 | 267 | 292 | 318 | 330 | 410 |
L1 | 43 | 46 | 49 | 56 | 64 | 70 | 71 | 76 | 83 | 92 | 102 | 113 | 127 | 154 | 165 | 190 | 203 | 216 |
H | 112 | 115 | 120 | 140 | 170 | 180 | 210 | 240 | 290 | 320 | 350 | 380 | 410 | 470 | 550 | 640 | 710 | 770 |
n-φd | 4-18 | 4-18 | 8-18 | 8-18 | 8-18 | 8-22 | 12-22 | 12-26 | 12-26 | 16-26 | 16-30 | 20-30 | 20-33 | 20-36 | 24-36 | 24-39 | 28-39 | 28-42 |
H1 | Depending on the executing agency. | |||||||||||||||||
A | Depending on the torque required by the valve, the configuration models are different and the dimensions are different. | |||||||||||||||||
D | 165 | 185 | 200 | 220 | 250 | 285 | 340 | 405 | 460 | 520 | 580 | 640 | 715 | 840 | 910 | 1025 | 1125 | 1255 |
D1 | 125 | 145 | 160 | 180 | 210 | 240 | 295 | 355 | 410 | 470 | 525 | 585 | 650 | 770 | 840 | 950 | 1050 | 1170 |
The best quality, first-class service Qigao creates more value for you!
"Qigao Valve" expects to continuously improve service quality and strive for excellence. "Sincere service" is the eternal theme of "Qigao". "Qigao" strictly followsIS09001-2000 Quality system certification requirements, strict quality control, responsibility to people, to ensure the healthy operation of production, sales and service. Strengthen communication with users and provide quality products to our customers with perfection and perfect service. Hereby our factory makes the following commitments:
Product Standards：
Products in strict accordance with ChinaGB、HG Standard and USAPISuch as standard design, manufacturing, acceptance. The hardness of the sealing surface meets the requirements of the state and the width exceeds the national standard.
pre-sale service：
Product introduction, technical exchange, non-standard product design, troubleshooting。
Sale service：
A trustworthy contract guarantees timely delivery and keeps in touch with customers. For special or duplicate products, our factory arranges technicians to use and troubleshoot the products for users.
After sales service：
1、"Qigao" brand product quality period is from the factory12In the month, the implementation of the "three guarantees" service (return, replacement, warranty).
2、During the use of our products, our factory regularly organizes technical and quality inspection personnel to visit and consult users for feedback on product quality, usage status and improvement opinions, so as to further improve product quality.
3、Respond quickly to the quality of user complaints, after-sales service personnel rushed to the scene in 24-36 hours (48 hours outside the province).
4、For after-sales service, users are required to fill out the quality feedback information form after the service and make an appraisal opinion in order to improve the service quality of Qigao.
1、If the customer has special requirements for the product, the following instructions must be provided in the order contract.：
a、Structure length；
b、Connection Type；
c、Nominal diameter, full diameter, reduced diameter, pipe size;
d、Operating medium and temperature, pressure range；
e、Tests, inspection standards and other requirements
2、The factory can configure various types of driving devices according to customer's specific requirements.。
3、If the type and model of the valve are determined by the customer, the customer shall correctly state the meaning and requirements of the model and sign the contract under the condition that the supplier and the buyer understand each other.
4、For futures and order customers, please call us in advance to tell the required valve model, specification, quantity, delivery time and location, and timely transfer to the factory account according to the total 30% deposit or full payment. The rest of the payment is pending. Import before shipment to arrange delivery in time.
Order Process：
1、Customer purchase list fax to021-33872143，Or call us 021-33872141
2、Receive customer purchase list, provide valve model selection and quotation (price list)。
3、Specific agreement: delivery date, special requirements, etc.。
download Google：
1、If the customer has special requirements for the product, the following instructions must be provided in the order contract.：
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2、The factory can configure various types of driving devices according to customer's specific requirements.。
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3、If the type and model of the valve are determined by the customer, the customer shall correctly state the meaning and requirements of the model and sign the contract under the condition that the supplier and the buyer understand each other.
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4、For futures and order customers, please call us first to tell the required valve model, specifications, quantity, delivery time and location, and press the total30%The deposit or full payment will be remitted to our factory account in time.， The rest of the payment will be remitted before shipment to arrange delivery in time.。
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Sale service：
Trustworthy contract, guarantee timely delivery, keep in touch with customers at any time。
For special or duplicate products, our factory arranges technicians to use and troubleshoot the products for users.
After sales service：
1、"Qigao" product quality period is from the factory12Month, practice“Three packs”Service (return, replacement, warranty)。
2、During the use of our products, our factory regularly organizes technical and quality inspection personnel to visit and consult users for feedback on product quality, usage status and improvement opinions.，
In order to further improve product quality。
3、Respond quickly to the quality of user complaints, after-sales service personnel24-36Hours (outside the province48Hour) rushed to the scene。
4、For after-sales service, the user is required to fill out the quality feedback information form after the service and make an appraisal opinion in order to improve the service quality of “Qigao”.。
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