Overview
This kind of product is assembled by three eccentric multi-layer metal hard-seal butterfly valve body parts and a small single-acting, double-acting pneumatic piston mechanism. The valve body parts adopt three eccentric sealing structure, which makes the valve tighter and tighter when opening and closing. Therefore, the sealing performance is effectively ensured. When opening, the valve plate is instantaneously separated from the sealing surface of the valve seat, and the friction torque is effectively reduced, so that the valve is opened and convenient and labor-saving. The actuator adopts high-quality aluminum alloy profiles, and the structure is novel, simple, stable, and reliable. It can be adjusted or cut off with electric valve positioner or solenoid valve. At the same time, this kind of product can also be used with electronic actuators. This kind of products are widely used in metallurgy, electric power, petrochemical and other industrial sectors to control various types. Gas, liquid medium.
The main technical parameters
Valve body
Type: straight through casting butterfly valve
Nominal diameter: DN80 ~ 900;
Nominal pressure: PN0.25, 0.6, 1.0, 1.6MPa
Connection type: wafer type flange connection convex surface
Main body and valve plate material: WCB (SCPH2) CF8 (304), CF8M (316)
Stem material: 2Cr13, 304, 316
Applicable temperature: normal temperature type -40 ~ 250 °C, medium temperature type -40 ~ 450 °C, high temperature type -40 ~ 700 °C
Filler: flexible graphite, asbestos braided packing
Remark: The valve plate sealing surface is surfacing with cobalt-based alloy multi-layer sealing surface, which is 316L and expansion surface ink sheet interlayer
In-valve assembly
Valve plate type: three eccentric butterfly plate
Sealing type: multi-layer composite seal, elastic seal
Leakage: DN80~500 relative to zero leakage, DN600 or above JB/T8527-9710×DNmm3/s
Adjustable ratio: 30:1
Executive agency
Type: AT-DA double acting piston actuator, AT-SR spring return actuator
Air source pressure: 0.4 ~ 0.6MPa
Air source interface: M10×1, M12×1.25
Output angle: 70° or 90°
Ambient temperature: -20 ~ +80 ° C
Accessories: solenoid valve, travel switch
Rated KV value
DN | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Flow Coefficient | 220 | 340 | 530 | 770 | 1360 | 2130 | 3060 | 4160 | 5450 | 6900 | 8500 | 12200 | 16600 | 21700 | 27100 |
Dimensions
DN | L | A | H1 | H | Increased "H" size with handwheel mechanism | ||||
---|---|---|---|---|---|---|---|---|---|
clips | flange | QGH | AT | QGH | AT | ||||
80 | 49 | 114 | 290 | 82 | 260 | 240 | 120 | ||
100 | 64 | 127 | 560 | 295 | 95 | 300 | 285 | ||
125 | 70 | 140 | 560 | 295 | 120 | 375 | 360 | ||
150 | 70 | 140 | 560 | 308 | 150 | 480 | 450 | ||
200 | 71 | 152 | 630 | 308 | 215 | 590 | 560 | ||
250 | 76 | 165 | 630 | 474 | 265 | 660 | 610 | 125 | |
300 | 83 | 178 | 630 | 474 | 295 | 810 | 750 | ||
350 | 92 | 190 | 870 | 592 | 325 | 970 | 910 | ||
400 | 102 | 216 | 870 | 664 | 365 | 1050 | 990 | 140 | |
450 | 114 | 222 | 1100 | 664 | 400 | 1150 | 1050 | ||
500 | 127 | 229 | 1100 | 732 | 440 | 1210 | 1160 | ||
600 | 154 | 267 | 1100 | 732 | 505 | 1510 | 1390 | 160 | |
700 | 165 | 292 | 1400 | 935 | 540 | 1570 | 1490 | ||
800 | 190 | 318 | 1400 | 935 | 600 | 1700 | 1650 | ||
900 | 203 | 330 | 1400 | 935 | 650 | 1850 | 1760 |