Wuhan Grat Control Valve Co., Ltd.
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High Performance Triple Eccentric Pneumatic Butterfly Valve
Product Description:
Triple Eccentric Pneumatic Butterfly Valve/High Temperature/High Pressure
Description:
Triple eccentric pneumatic butterfly valve adopts a "U" type stainless steel seal ring. This precision elastic seal ring and the 3D eccentric polishing disc contact each other to solve the problem that the seal surface is in the sliding contact friction when the traditional eccentric butterfly valve opened and closed from 0 ° to 10 ° which makes the seal surface separating when the disc opened in a twinkle and seal recovery when the disc closed. It also achieves the purpose of the best seal performance and prolonged service life. Hence this valve is widely suited to the pipeline of medium temperature ≤ 550 ºC as the best device to regulate and cut off fluid which is applied in the fields of metallurgy electric power petroleum chemical air gas combustible gas water supply drainage and other corrosive medium.
Features:
(1)The sealing ring by the stainless steel plate and graphite composite plate superimposed.It has the double advantages of metal hard seal and elastic seal no matter in the case of low temperature and high temperature it has excellent sealing performance abrasion resistance corrosion resistance and long service life.
(2) Unique lengthen valve stem structure effectively increase the distance between the actuator and high temperature media better heat dissipation performance.
(3)Single action pneumatic piston actuator prevent midway air source broken spring reset function automatically reset close valve.
(4) Valve opening resistance is small butterfly plate sealing surface for an upward raised cone open the butterfly plate circle at the same time to complete the point from the sealing ring solid objects are not easy to pile up on the sealing surface.
(5) The use of three eccentric sealing structure valve seat and butterfly valve almost no friction the more closed the more tight sealing function.
Specification:
| Nominal diameter | DN50~DN1200 |
| Medium temp. | -30ºC-550ºC |
| Nominal pressure | PN1.0-2.5MPa |
| Suited medium | metallurgy electric power petroleum chemical air gas combustible gas water supply drainage and other corrosive medium |
| Pressure of gas supply | 0.4~0.7MPa |
| Seal material | Metal alloy |
| Flow characteristic | Approximate linear / Eq% |
| Connection type | Wafer / Flange |
| Control mode | Regulation / Switch to on-off |
| Body material | WCB SUS304 SUS316L CF8 CF8L stainless steel |
| Disc material | WCB SUS304 SUS316L CF8 CF8L stainless steel |
| Flange standard | GB/T9113.1-2000;GB/T9113.2-2000 GB/T9115.1-2000;GB/T9115.2-2000 |
| Length standard | GB/T12221-1989 |
| Design and product standard | GB/T12238-1989 |
| Inspection and test standard | GB/T13927-1992;JB/T9092-1999 |
Optional Accessories
| On-off type | Solenoid valve Limit switch |
| Regulation type | Electrical positioner Pneumatic positioner Electrical/Pneumatic convertor |
| Air treatment unit | Fliter Lubricator Air relief valve |
| Hand wheel | HVSD hand wheel |
Gas consumption
| Air cylinder size | Open(L) | Close(L) |
| 50 | 0.11 | 0.15 |
| 65 | 0.22 | 0.24 |
| 75 | 0.3 | 0.35 |
| 85 | 0.45 | 0.48 |
| 95 | 0.5 | 0.55 |
| 110 | 0.7 | 0.7 |
| 125 | 1.6 | 1.6 |
| 140 | 2.3 | 2.1 |
| 160 | 3.5 | 3 |
| 190 | 5.9 | 5.9 |
| 210 | 7.6 | 7.5 |
| 240 | 11 | 9 |
| 270 | 17 | 14 |
| 300 | 23.5 | 28 |
| 350 | 34 | 40 |
| 400 | 58 | 58 |
Figure and connection size
| Valve size DN/mm | Air cylinder diameter Φ | D1 | D2 | L | L1 | L2 | H1 | H2 |
| 50 | 75 | 92 | Φ18 | 43 | 206 | 103 | 590 | 112 |
| 65 | 83 | 106 | Φ18 | 46 | 262 | 109 | 600 | 115 |
| 80 | 92 | 122 | Φ18 | 49 | 270 | 122 | 620 | 120 |
| 100 | 105 | 150 | Φ18 | 56 | 301 | 143 | 670 | 138 |
| 125 | 125 | 177 | Φ18 | 64 | 392 | 152 | 740 | 164 |
| 150 | 140 | 204 | Φ23 | 76 | 460 | 174 | 780 | 175 |
| 200 | 160 | 260 | M20 | 89 | 515 | 205 | 830 | 208 |
| 250 | 190 | 314 | M24 | 114 | 560 | 226 | 890 | 243 |
| 300 | 210 | 370 | M24 | 114 | 654 | 260 | 990 | 283 |
| 350 | 240 | * | M24 | 127 | 725 | 294 | 1040 | 310 |
| 400 | 270 | * | M27 | 140 | 742 | 380 | 1080 | 340 |
| 450 | 300 | * | M27 | 152 | 865 | 430 | 1120 | 380 |
| 500 | 350 | * | M30 | 152 | 925 | 516 | 1160 | 410 |
| 600 | 350 | * | M33 | 154 | 925 | 516 | 1220 | 470 |
Packing & Shipping:
1.Packing: inner with bubble wrap,outer with cardboard box and wooden case.
2.Transportation:by sea, by air,by train.
If you have other requirements, please feel free to tell us.