Jiangsu Fluitech Control System Co.,LTD.
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WCB Double Eccentric Butterfly Valve Actuator DN1200 High Performance

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Jiangsu Fluitech Control System Co.,LTD.
[China]

Address
No.15,Xihong Road,Xinwu district,Wuxi city,Jiangsu Province,China Wuxi Jiangsu
Phone
86-0510-88231123
Contact name
Lucia

Quick Information

  • Brand Name: FLUITECH
  • Place of Origin: China
  • Model Number : DN50-1200

Description

DN1200 High Performance Butterfly Valves , WCB Double Eccentric Butterfly Valve

 

 

The high performance double-eccentric butterfly valve can be used in working conditions and media for which conventional valves are suitable, and adopts different structure materials and special treatment materials according to different media. It can also be used in special working conditions such as cryogenic condition, steam, chlorine, oxygen, high vacuum, anti-corrosive condition, etc.

 

 

DBA8150 2''~60'' (DN50~1500)
DBA5150 21/2''~60'' (DN65~1500)
DFA8150 3''~60'' (DN80~1500)
DBA8300 2''~60'' (DN80~1500)
DBA5300 3''~60'' (DN80~1500)
DFA8300 3''~60'' (DN80~1500)

 

 

The series of high performance wafer type butterfly valves uses various structure materials, including those that meet NACE requirements and anticorrosive materials. Special valves that can be used in chlorine, oxygen, high vacuum, corrosive media and cryogenic condition are also available.

 

 

 

 

Features-Butterfly valves

 

 

The unique dynamic load seal PTFE seat design is adopted with good elasticity and high reliability.

Sealing can be maintained without the need of adding O ring or metal part.

The lip type sealing structure can compensate for the changes of temperature and pressure.

Long service life and low maintenance.

In seal test, there is no bubble and leakage at both directions.

 

Seat type

 

PTFE, R-PTFE, PEEK, Fireproof seat, etc.

 

Reliable fixing of shaft

 

The anti-blow-out structure is provided at the top of the shaft to prevent the shaft from running out of the gland in case of accidental breaking of the shaft.

 

Convenient seat maintenance and servicing

 

The seat can be replaced just through removing the inserts without removing the inserts without the need of disassembling the butterfly valve and shaft.

 

Provided with shut-off and control functions

 

Having excellent control characteristics

 

Proportional change of flow characteristic curve

 

Wide adjusting range

 

Tight sealing can be realized even when it is used for control.

 

 

Unique seat sealing structure-Butterfly valves

 

 

The traditional central line butterfly valve is lined with fluorin or rubber, but the S type elastic seal seat structure independently researched and developed by our company through introducing technology from Germany MAYER adopts the imported RPTFE material with good elasticity and long service life. It can automatically compensate for the changes of temperature and pressure and can realize compensation for the worn seal due to long-time opening, closing and use. It can realize double-direction sealing without leakage. It adopts flexible insert structure, and the maintenance is fast and convenient without the need of removing the butterfly plate and stem. The seal seat can be replaced and the sealing face can be repaired just through taking off the inserts at one side.

 

 

Seat sealing-Butterfly valves

 

 

ANSIFCI 70-2 stipulated the control valve leakage level and test procedures. Among them VI level is the minimum leakage level. High performance wafer butterfly valve can achieve MSS-SP61 prescribed no bubble seal, higher than VI level.

 

When the valve is closed, the butterfly plate makes the seat slightly deform. The deformation excites the seat. The excitation of the seat sealing face enables permanent sealing to be maintained between it and edges of the butterfly plate.

 

When the inserts receive pressure, the pressure is exerted at the bottom of the lip edges, further enhancing the sealing force between the butterfly plate and seat.

 

When the pressure is exerted at the non-insert side, the butterfly plate is pushed towards the seat. As the butterfly plate is of the ball shape, the further the butterfly plate is pushed towards the seat, the tighter the closing is. The lip edges contact the trough at the bottom of insert, limiting excessive movement of the seat.

 

 

Valve size table-Butterfly valves

 

 

Size

(DN)

Approximate size (mm) Weight(kg) National standard flange GB PN16
A B C E G H K P S X Y* D N-Φ
50 43.3 23.3 96 38 124.3 279 80 186.3 7 24 50 3.2 Φ125 4-Φ18
65 49 27 119 59 194 279 111 275 11.2 14.8 48 5 Φ145 4-Φ18
80 49 27 132 73 203 279 121 316 11.2 14.8 74 6 Φ160 8-Φ18
100 54 30 157 95 216 279 133 341 11.2 14.8 97 8 Φ180 8-Φ18
125 64 30 186 111 217 279 135 362 11.2 14.8 111 12 Φ210 8-Φ18
150 57 33 216 142 235 279 152 378 14 18 146 13 Φ240 8-Φ23
200 64 39 270 188 270 559 187 441 15.9 21.9 194 2 Φ395 12-Φ23
250 71 41 324 236 329 559 232 530.6 20.6 28 243 35 Φ355 12-Φ25
300 81 48 381 282 357 559 260 595.5 23.8 33.3 289 51 Φ410 12-Φ25

 

Size

(DN)

Approximate size (mm)

Weight

(kg)

National standard flange GB PN16
A B C D E F G K L1 L2 M P S X Y D N-Φ L-M
350 92 52 413 476 314 413 425 315 1-1/8* Φ29 0 710 28.5 37 318 82 Φ470 16-Φ26 4-M24
400 102 56 470 540 363 470 444 333 1-1/16* Φ30 4 767 33.5 42 365 115 Φ525 16-Φ30 4-M27
450 114 67 533 578 414 533 466 355 1-3/16* Φ33 4 812 41.5 47 416 156 Φ585 20-Φ30 4-M27
500 127 67 584 635 456 584 492 378 1-1/8~8+ M30 4 879 41.4 50 454 199 Φ650 20-Φ33 4-M30
600 154 76 692 749 549 692 610 480 1-1/4~8+ M33 4 1094 51 64 542 333 Φ770 20-Φ36 4-M33
650 164.6 86.5 749 806.5 549 749 620 480 1-1/4~8+ M33 4 1103 51 64 542 371      
750 167 87 857 914 702 857 697 570 1-1/4~8+ M33 4 1307 51 66.8 711 594      
800 190 87 905 977.9 702 905 697 570 1-1/4~8+ M39 4 1307 51 66.8 711 638 Φ950 34-Φ39 4-M36

 

 

Special working conditions-Butterfly valves

 

 

Steam working condition

 

The wafer type butterfly valves, including valves of PTFE seat with lower rated values and valves Peek seat, are suitable for steam working condition. The rated values of valves used as switch in the steam working condition are shown in the following table. The rated values may be decreased according to different shaft materials selected.

 

Oxygen working condition

 

After special treatment, the valve can be used for shut-off and control in oxygen working condition. A series of strict procedures for spare parts preparation, assembly, teat and packing is followed to ensure cleanliness and avoid inherent danger caused due to reaction of oxygen with grease and other impurities.

 

Vacuum working condition

 

Standard wafer type butterfly valves are rated for tight shut-off of vacuum 2X10-2torr. Special high vacuum wafer valves can also be provided for vacuum of 2X10-5 torr. In addition, high vacuum valves are confirmed to have a leakage rate of helium not exceeding 2X10-5 CC/sec at vacuum of 2X10-5 torr.

 

Selection for high service life

 

The service life of valves assembly by spare parts such as reinforced PTFE shaft seal, PEEK-reinforced PTFE thrust bearing, etc. is much higher than that of ordinary valves. Certainly, the actual performances depend on the media, pressure and temperature and other conditions. It is the most ideal situation that the combination of oxygen, nitrogen, hydrogen, water and clean media is used.

Note: The working condition that contains acid, chlorine, bromine, sulfur dioxide, steam media with temperature exceeding 325°F(163) shall be avoided.

 

Body rated value

 

The maximum working pressure of body and testing pressure of body of various materials are listed in the body pressure ratings table. The actual working pressure in the working conditions shall be decided according to the seat rated values.

 

Rated value of 150lb body (bar)
Temperature Carbon steel Ductile iron Stainless steel 20# alloy Monel
-20 to 38 19.7 17.2 19.0 15.8 15.8
93 17.9 16.2 16.5 13.8 13.8
149 15.8 14.8 14.8 12.4 13.1
204 13.8 13.8 13.4 11.0 12.8
260 11.7 11.7 11.7 10.3 11.7
Test Pressure 31 27.6 29.3 24.1 24.1

 

 

Rated value of 300lb body (bar)
Temperature Carbon steel Stainless steel 20# alloy Monel
-20 to 38 51 49.6 41.4 41.1
93 46.5 42.7 35.9 36.5
149 45.2 38.6 32.1 34.1
204 43.8 35.5 29.0 33.1
260 41.4 33.1 26.9 32.8
Test Pressure 77.6 75.8 62 62


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