electric eccentric hemispherical valve
nominal diameter: dn40 ~ 800mm
nominal pressure : pn1.0 ~ 4.0mpa
temperature: ≤425 ℃
medium: coal, ash, dust, gas
flange size: gb / t 9113.1-2000.asme / ansi 16.5
structure length: gb 12221-2005, asne b16.10
manufacture and acceptance: gb12237-89, api 6d
pressure test according to jb / t9092-1999, gb / t13927-92, ap1598
electric eccentric hemisphere valve overview:
double eccentric hemisphere valve is used for pulverized coal injection, control gas, containing granular fluid and powder solid medium transport equipment, used in metallurgy, beneficiation production of coal injection valve.
electric eccentric hemisphere valve pq94f / y / h features:
1, solve the industrial production of slurry, mixed flow of liquid, dust and other media in the pipeline deposition, easy scaling, blocking, the valve is not strict and so on.
2, the switch is light, open the ball and the shell off, without any contact, starting torque, flexible rotation. close, the hemisphere and seat squeeze can remove the sealing surface of the dirt, so that the valve opening and closing smooth, high safety factor, good sealing performance.
3, the sealing surface of the eccentric structure, the spherical surface can automatically compensate for wear and tear, to maintain the valve seal, long service life.
4, the t-type valve is a wear-resistant hard-sealing ball valve, its sealing material is special, sealing surface to go through a special wear-resistant treatment. after processing the surface reached hrc65-72 degrees, so the valve wear resistance is particularly good.
5, the valve surface paint, there are two kinds of normal temperature and high temperature. temperature 600 ℃ imported paint with high temperature, spray, the use of high temperature paint, charring, coking phenomenon. do not change color.
electric eccentric hemisphere valve pq94f / y / h main performance parameters and implementation of standards:
| nominal pressure mpa | 1.0 | 1.6 | 2.5 | 4.0 |
| valve strength test pressure mpa | 1.5 | 2.4 | 3.8 | 6.0 |
| valve seal test pressure mpa | 1.1 | 1.8 | 2.8 | 4.5 |
| applicable temperature ℃ | ≤ 425 ℃ ≤325 ℃ room temperature | |||
| suitable media | pulverized coal, coal ash, dust, gas | |||
| flange standard | jb / t82.1-94 | |||
| valve structure length standard | gb12221-89 | |||
electric eccentric hemisphere valve pq940f / y / h the main shape and connection dimensions:
| nominal pressure pn (mpa) | nominal diameter dn | size (mm) | ||||||||
| l | d series 1 / series 2 | d1 | d2 | d6 | b | f | z-φd | |||
| mm | in | flange | ||||||||
| 1.0 | 40 | - | 125 | 145 | 110 | 85 | - | 16 | 3 | 4-18 |
| 50 | - | 140 | 160 | 125 | 100 | - | 16 | 3 | 4-18 | |
| 65 | - | 190 | 180 | 145 | 120 | - | 18 | 3 | 4-18 | |
| 80 | - | 178 | 195 | 160 | 135 | - | 20 | 3 | 4-18 | |
| 100 | - | 200 | 215 | 180 | 155 | - | 20 | 3 | 8-18 | |
| 125 | - | 254 | 245 | 210 | 185 | - | 22 | 3 | 8-18 | |
| 150 | - | 267 | 280 | 240 | 210 | - | 24 | 3 | 8-23 | |
| 200 | - | 292 | 335 | 295 | 265 | - | 24 | 3 | 8-23 | |
| 250 | - | 330 | 390 | 350 | 320 | - | 26 | 3 | 12-23 | |
| 300 | - | 390 | 440 | 400 | 368 | - | 26 | 4 | 12-23 | |
| 350 | - | 430 | 500 | 460 | 428 | - | 28 | 4 | 16-23 | |
| 400 | - | 530 | 565 | 515 | 482 | - | 28 | 4 | 16-25 | |
| 450 | - | 580 | 615 | 565 | 532 | - | 30 | 4 | 20-25 | |
| 500 | - | 630 | 670 | 620 | 585 | - | 30 | 4 | 20-25 | |
| 600 | - | 800 | 480 | 725 | 685 | - | 34 | 5 | 20-30 | |
| 700 | - | 900 | 895 | 840 | 800 | - | 38 | 5 | 24-30 | |
| 800 | - | 1000 | 1010 | 950 | 905 | - | 42 | 5 | 24-34 | |
| 1.6 | 40 | |||||||||