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70ESeries high-performance Butterfly Valve
Product Images
Product Property
| Material : | stainless steel |
| Product Status : | New |
| Sample Available : | yes |
| Shipment Terms : | fob,cfr,cif,Negotiable |
| Payment Mode : |
T/T,L/C,cash,cheque,Credit Card,D/P,D/A,PayPal,WesternUnion,MoneyGram,Negotiable |
Description
The 70E Series high performance butterfly valve adopts the design of double-eccentric structure. The shaft carries out double deviation from the structural center of the body and makes the disc leave the sealing seat instantly when it is opened in conjunction with the arc sealing face design of the disc. So as to reduce the friction of the sealing face. The disc has good sealing performance during closing. In addition to realizing effective compensation for the seat seal, the central self-positioning sealing seat structure design and the unique seat compensation sealing design reduce the friction during opening and closing, greatly reduce the operating force of the valve and effectively enhance the control precision of the butterfly valve. The 70E Series butterfly valve is Featured by stable and reliable sealing performance, long service life, etc. It is suitable for control and shut-off applications of common corrosive gases and liquid media.
Actuator and auxiliary control device
·Pneumatic
·Electric
·Pneumatic-hydraulic
·Worm gear
Application
·Air separation, chemical industry, petroleum
·Chemical fiber, electric power, metallurgy
·Pharmacy, environmental protection
Manufacturing range
·Size range: DN"2"~48"
·Pressure rating: 150~300LB
·Connection type: wafer type, flange type
Parameters of control valves
·Trim features: double-eccentric structure, Compensation type sealing seat, Valve disc arc surface
·Body type: straight-through type
·Bonnet type: standard integral type
·Flow characteristic: approximately equal percentage
·Shut-off class: ASME B16.104 VI (standard seat), ASME B16.104 IV (metal seat)
·Pipe connection type: wafer type, flange type
·Applicable temperature range: -45°C~250°C
·Actuator type: pneumatic piston actuator, electric actuator
Structural drawing of 70E Series
Materials of 70E Series
| Number | Name | Material |
| 1 | Stem | 17-4PH Stainless Steel ASTM A564 Gr630 Optional:316ss, inconel718/625, Monel |
| 3 | Packing | PTFE Optional:Graphite-high density/low density |
| 4 | Front bearing | 316SS Backed PTFE, hastelloy C Backed Ptfe |
| 5 | Cover plate | Optional:316ss, ALLOY20 |
| 8 | Body | Carbon Steel A216 Gr WCB Or A105 Optional:ASTMA351CF8MOr A182F316 |
| 9 | DISC | Carbon Steel A216 Gr WCB Or A105+Surfacing SS Optional:316ss, ASTMA351CF8MOr A182F316 Monel, Alloy20, AluminumBronze, HastelloyC |
| 11 | Limit part | 17-4PHStainlessSteel ASTMA564Gr630 Optional:A182F316/F304 |
| 14 | Side seal ring | NBR Or VITON Optional:316ss |
| 15 | Seat | R.TFE.F Optional: R.TFE.C |
Outline
The double-eccentric design of the70E Series butterfly valve reduces the abrasion of the seat and ensures the double-way tightness function within the whole pressure range. Taking the seat as the starting point, the eccentric disc produces a function similar to that of the cam and the disc can be pulled to leave the seat without the need of using too high operating force. The function of the disc similar to that of the cam at the starting position reduces the abrasion of the seat and reduces the deformation of the seat. When the valve is opened , the disc will instantly leave the seat, and when the valve is closed, the function similar to that of the cam turns the rotary movement of the valve into linear motion, so as to effectively push the disc to contact the seat. The built-in compensation spring can effectively compensate for the abrasion of the sealing seat and enable the sealing seat to be elastic during the opening and closing process, greatly reduce friction , enhance sensitivity and make the whole valve have excellent shut-off and control functions.
Seat design
The 70E Series provides various types of seat structures:
1. The seat adopts the internally opened U groove structure .Self sealing is realized through medium pressure . The built-in compensation spring makes the sealing structure realize real dynamic sealing through the medium pressure in the system .Seat leakage: under CV*10%.
2. These at adopts externally opened O ring groove structure . When the disc is not completely closed, the seat has certain radial flexibility so that the seat abrasion is reduced and the torque is lowered. When the disc is closed, the pre-tightening force of the sealing face of the disc is offered to ensure sealing. Seat leakage: under CV*10-6%.
Body size
| Valve size (DN) | Class150LB | H1 | H2 | H3 | H4 | A | B | M | ΦD | C x C | E | |
| L1 | L2 | |||||||||||
| 3" DN80 | 48 | 114 | 122 | 270 | 70 | 20 | 90 | 40 | M10 | 20 | 17x17 | -- |
| 4" DN100 | 54 | 127 | 132 | 292 | 70 | 20 | 90 | 40 | M10 | 20 | 17x17 | -- |
| 5" DN125 | 57 | 140 | 144 | 314 | 70 | 20 | 90 | 40 | M10 | 20 | 17x17 | -- |
| 6" DN150 | 57 | 152 | 164 | 350 | 70 | 20 | 90 | 40 | M10 | 20 | 17x17 | -- |
| 8" DN200 | 64 | 152 | 202 | 422 | 80 | 25 | 110 | 40 | M12 | 28 | 22x22 | -- |
| 10" DN250 | 71 | 165 | 245 | 525 | 85 | 30 | 130 | 50 | M14 | 32 | 26x26 | -- |
| 12" DN300 | 81 | 178 | 272 | 562 | 85 | 30 | 130 | 50 | M14 | 36 | 28x28 | -- |
| 14" DN350 | 92 | 190 | 313 | 643 | 95 | 35 | 142 | 55 | M20 | 42 | 34x34 | -- |
| 16" DN400 | 102 | 216 | 343 | 703 | 95 | 35 | 142 | 55 | M20 | 48 | 40x40 | -- |
| 18" DN450 | 114 | 222 | 364 | 744 | 100 | 40 | 170 | 80 | M24 | 50 | 38x38 | -- |
| 20" DN500 | 127 | 229 | 394 | 814 | 100 | 40 | 170 | 80 | M24 | 50 | 38x38 | -- |
| 24" DN600 | 154 | 267 | 449 | 934 | 120 | 50 | 184 | 98 | M27 | 65 | 54x54 | -- |
| 28" DN700 | 165 | 292 | 490 | 1000 | 120 | 50 | 184 | 98 | M27 | 75 | 54x54 | -- |
| 32" DN800 | 190 | 318 | 545 | 1125 | 160 | 60 | 268 | 105 | M27 | 85 | -- | 22 |
| 36" DN900 | 203 | 330 | 603 | 1255 | 160 | 60 | 268 | 140 | M30 | 90 | -- | 25 |
| 40" DN1000 | 216 | 410 | 675 | 1395 | 160 | 60 | 268 | 140 | M30 | 100 | -- | 28 |
| 48" DN1200 | 254 | 470 | 870 | 1450 | 160 | 70 | 268 | 140 | M30 | 100 | -- | 28 |
Rated CV valve and travel
| Valve Size | Rated CV valve | Valve Size | Rated CV valve | ||
| inch | mm | 90°Opening | inch | mm | 90°Opening |
| 3 | 80 | 178 | 18 | 450 | 11314 |
| 4 | 100 | 430 | 20 | 500 | 14870 |
| 5 | 125 | 458 | 24 | 600 | 21450 |
| 6 | 150 | 1010 | 28 | 700 | 30515 |
| 8 | 200 | 2710 | 32 | 800 | 41603 |
| 10 | 250 | 3440 | 36 | 900 | 54193 |
| 12 | 300 | 4950 | 40 | 1000 | 56920 |
| 14 | 350 | 6485 | 48 | 1200 | 77390 |
| 16 | 400 | 8525 | -- | -- | -- |
