70eseries High-performance Butterfly Valve
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| Name | 70eseries High-performance Butterfly Valve |
|---|---|
| City | China |
| Type | Industrial Machinery & Equipments |
| [email protected] | |
| Phone # | 86-21-52805955 |
| Fax # | 86-21-62808550 |
| Address | 609ROOM,2#Yinghua International Plaza, Guangfu Road,Putuo District ,Shanghai China |
| Description | Outline 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℃~250℃ •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 -- -- -- |
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