three-piece welded stainless steel ball valve
nominal diameter: 1/4"~4"
nominal pressure: pn1.6-6.4mpa
applicable temperature: -20～232°c～350°c
body material: stainless steel cf8m, carbon steel wcb
drive mode: manual, electric, pneumatic
suitable medium: water, oil, gas and some corrosive liquid (w.o.g)
thread type: g. npt. bspt. bsp. di259/2999
one or three piece welded stainless steel ball valve
three-piece welded stainless steel ball valve is suitable for pn1.0～4.0mpa, working temperature is -29～180°c (sealing ring is reinforced ptfe) or -29～300°c (sealing ring is para-position polyphenyl) pipeline, used to cut off or connect the medium in the pipeline. the use of different materials can be applied to various media such as water, steam, oil, nitric acid, and acetic acid.
two, three-piece welded stainless steel ball valve features
the three-piece welded stainless steel ball valve is divided into integral type (one-piece type), two-stage type and three-stage type. the valve body casting adopts advanced technology introduced from taiwan, with reasonable structure and beautiful appearance. valve seat adopts elastic sealing structure, reliable sealing and easy opening and closing. the valve stem adopts a bottom-down structure with an inverted seal. when the valve chamber is raised abnormally, the stem will not be washed out. the two-piece and three-piece ball valve connections are additionally welded (bw) socket welding (sw), and all can be equipped with international standard iso bracket platforms and locking devices. a 90° switch positioning mechanism can be set, and locks can be added as required to prevent erroneous operation. the drive mode is manual, electric, and pneumatic.
three, three piece welded stainless steel ball valve main parts materials
| part name | materials | |
|---|---|---|
| stainless steel | carbon steel | |
| body | stainless steel cf8m | carbon steel wcb |
| sealing ring | polytetrafluoroethylene ptfe | polytetrafluoroethylene ptfe |
| cap | stainless steel cf8m | carbon steel wcb |
| sphere | stainless steel ss316 | stainless steel ss304 |
| stem | stainless steel ss316 | stainless steel ss316 |
| nuts | stainless steel ss304 | fcd45 |
| washer | stainless steel ss304 | fcd45 |
| handle cover | plastic | plastic |
| handle | stainless steel ss304 | stainless steel ss304 |
| stem nut | stainless steel ss304 | b7 |
| washer | stainless steel ss304 | stainless steel ss304 |
| packing gland nuts | stainless steel ss304 | fcd45 |
| filler | polytetrafluoroethylene ptfe | polytetrafluoroethylene ptfe |
| thrust washer | polytetrafluoroethylene ptfe | polytetrafluoroethylene ptfe |
| filler | polytetrafluoroethylene ptfe | polytetrafluoroethylene ptfe |
| bolt | stainless steel ss304 | b8 |
| nominal diameter | structure length | dimensions | connection size | ||||||||||||||||
| l | h | d343h | d643h | d943h | 0.6mpa | 1.0mpa | |||||||||||||
| mm | inch | short | long | h1 | a1 | b1 | h2 | a2 | b2 | h3 | a3 | b3 | d | d1 | zd | d | d1 | zd | |
| 50 | 2 | 108 | 150 | 112 | 350 | 180 | 200 | 625 | 245 | 72 | 530 | 250 | 255 | 140 | 110 | 4-14 | 165 | 125 | 4-18 |
| 65 | 2? | 112 | 170 | 115 | 370 | 180 | 200 | 625 | 245 | 72 | 530 | 250 | 255 | 160 | 130 | 4-14 | 185 | 145 | 4-18 |
| 80 | 3 | 114 | 180 | 120 | 380 | 180 | 200 | 645 | 245 | 72 | 565 | 250 | 255 | 190 | 150 | 4-18 | 200 | 160 | 8-18 |
| 100 | 4 | 127 | 190 | 138 | 420 | 180 | 200 | 675 | 355 | 92 | 600 | 250 | 255 | 210 | 170 | 4-18 | 220 | 180 | 8-18 |
| 125 | 5 | 140 | 200 | 164 | 460 | 180 | 200 | 715 | 355 | 92 | 640 | 250 | 255 | 240 | 200 | 8-18 | 250 | 210 | 8-18 |
| 150 | 6 | 140 | 210 | 175 | 555 | 270 | 280 | 800 | 355 | 92 | 705 | 300 | 315 | 265 | 225 | 8-18 | 285 | 240 | 8-22 |
| 200 | 8 | 152 | 230 | 200 | 760 | 400 | 425 | 850 | 250 | 170 | 775 | 300 | 315 | 320 | 280 | 8-18 | 340 | 295 | 8-22 |
| 250 | 10 | 165 | 250 | 243 | 830 | 400 | 425 | 925 | 250 | 170 | 945 | 300 | 315 | 375 | 335 | 12-18 | 395 | 350 | 12-22 |
| 300 | 12 | 178 | 270 | 250 | 895 | 450 | 560 | 1035 | 450 | 220 | 1070 | 300 | 315 | 440 | 395 | 12-22 | 445 | 400 | 12-22 |
| 350 | 14 | 190 | 290 | 280 | 950 | 450 | 560 | 1070 | 450 | 220 | 1140 | 300 | 315 | 490 | 445 | 12-22 | 505 | 460 | 16-22 |
| 400 | 16 | 216 | 310 | 305 | 1190 | 535 | 580 | 1190 | 450 | 220 | 1210 | 300 | 315 | 540 | 495 | 16-22 | 565 | 515 | 16-26 |
| 450 | 18 | 222 | 330 | 350 | 1255 | 535 | 580 | 1250 | 650 | 280 | 1335 | 575 | 414 | 595 | 550 | 16-22 | 615 | 565 | 20-26 |
| 500 | 20 | 229 | 350 | 380 | 1305 | 535 | 580 | 1290 | 650 | 280 | 1415 | 575 | 714 | 645 | 600 | 20-22 | 670 | 620 | 20-26 |
| 600 | twenty four | 267 | 390 | 445 | 1340 | 570 | 660 | 1455 | 850 | 380 | 1605 | 656 | 810 | 755 | 705 | 20-26 | 780 | 725 | 20-30 |
| 700 | 28 | 292 | 430 | 480 | 1520 | 750 | 550 | 1585 | 850 | 380 | 1844 | 656 | 810 | 860 | 810 | 24-26 | 895 | 840 | 24-30 |
| 800 | 32 | 318 | 470 | 530 | 1710 | 750 | 550 | 1700 | 1250 | 380 | 2040 | 656 | 810 | 975 | 920 | 24-30 | 1015 | 950 | 24-33 |
| 900 | 36 | 330 | 510 | 580 | 1810 | 750 | 550 | 1865 | 1250 | 380 | 2255 | 785 | 863 | 1075 | 1020 | 24-30 | 1115 | 1050 | 28-33 |
| 1,000 | 40 | 410 | 550 | 650 | 1960 | 900 | 750 | 2015 | 1250 | 380 | 2380 | 785 | 863 | 1175 | 1120 | 28-30 | 1230 | 1160 | 28-36 |
| 1200 | 48 | 470 | 630 | 760 | 2250 | 1,000 | 925 | 2250 | 1250 | 380 | 2640 | 785 | 863 | 1405 | 1340 | 32-33 | 1455 | 1380 | 32-39 |
| 1400 | 56 | 530 | 710 | 850 | 2435 | 1,000 | 925 | 2886 | 1630 | 1560 | 36-36 | 1675 | 1590 | 36-42 | |||||
| 1600 | 64 | 600 | 790 | 1030 | 2780 | 1,000 | 925 | 3156 | 180 | 1760 | 40-36 | 1915 | 1820 | 40-48 | |||||
| 1800 | 72 | 670 | 870 | 1230 | 3020 | 1100 | 980 | 3421 | 2045 | 1970 | 44-39 | 2115 | 2020 | 44-48 | |||||
| 2000 | 80 | 760 | 950 | 1350 | 3270 | 1100 | 980 | 3685 | 2265 | 2180 | 48-42 | 2325 | 2230 | 48-48 | |||||