Place of Origin:
China
Brand Name:
LUOKEFM
Certification:
ISO 9001/ISO 14001/ISO 45001
Model Number:
LK-DYQ340H-16C DN900
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Equipped with eccentric half ball valve against pressure manual
Product Introduction
Mounted eccentric half ball valve using eccentric body, eccentric ball and seat, stem for rotation movement in the common track automatic centering, closing process is tighter, fully achieve good sealing purpose. The ball and seat of the valve are completely separated, eliminating the wear of the sealing ring and overcoming the problem that the traditional ball seat and the ball sealing surface are always worn. Non-metallic elastic materials are embedded in the metal seat, and the metal surface of the seat is well protected. This product is especially suitable for steel industry, aluminum, fiber, small solid particles, pulp, coal ash, petroleum gas and other media.
Product structure reference drawing
Mounted eccentric half ball valve main parts materials
The name of the | The material |
The valve body | QT450, WCB, ZG20CrMo, ZG1Cr18Ni9Ti |
Valve shaft | 2Cr13, 1Cr13 |
The disc | Alloy nitriding steel, nitriding stainless steel, wear-resistant steel |
The seat | Alloy nitriding steel, nitriding stainless steel, wear-resistant steel |
bearing | Aluminum bronze, FZ-1 composite material |
packing | Teflon, flexible graphite |
Mounted eccentric half ball valve to implement standard
Design: GB12237-89
Flange connection: GB/T17241.6-1998, GB/T9115 (steel)
Structure length: GB12221-89
Main shape and connection dimensions unit:mm
Nominal pressure PN |
Nominal diameter DN |
size(mm) | ||||||||
L | D | K | d | b | f | Z-do | Hw | Hd | ||
1.6MPa | 100 | 229 | 220 | 180 | 156 | 22 | 2 | 8-φ18 | 330 | 380 |
125 | 254 | 250 | 210 | 184 | 22 | 2 | 8-φ18 | 345 | 405 | |
150 | 267 | 285 | 240 | 211 | 24 | 2 | 8-φ23 | 370 | 440 | |
200 | 292 | 340 | 295 | 266 | 24 | 2 | 12-φ23 | 405 | 470 | |
250 | 330 | 405 | 355 | 319 | 26 | 2 | 12-φ26 | 480 | 540 | |
300 | 356 | 460 | 410 | 370 | 28 | 2 | 12-φ26 | 520 | 580 | |
350 | 430 | 520 | 470 | 429 | 30 | 2 | 16-φ26 | 570 | 630 | |
400 | 530 | 580 | 525 | 480 | 32 | 2 | 16-φ30 | 630 | 710 | |
450 | 580 | 640 | 585 | 548 | 40 | 2 | 20-φ30 | 690 | 770 | |
500 | 660 | 715 | 650 | 609 | 44 | 2 | 20-φ33 | 740 | 820 | |
600 | 840 | 840 | 770 | 720 | 48 | 2 | 20-φ36 | 840 | 940 | |
700 | 900 | 910 | 840 | 794 | 50 | 5 | 24-φ36 | 960 | 1040 | |
800 | 1000 | 1025 | 950 | 901 | 52 | 5 | 24-φ39 | 1080 | 1180 | |
900 | 1100 | 1125 | 1050 | 1001 | 54 | 5 | 28-φ39 | 1190 | 1280 | |
1000 | 1200 | 1255 | 1170 | 1112 | 56 | 5 | 28-φ42 | 1310 | 1420 | |
1100 | 1250 | 1370 | 1280 | 1222 | 56 | 5 | 28-φ42 | 1390 | 1480 | |
1200 | 1300 | 1485 | 1390 | 1328 | 58 | 5 | 32-φ48 | 1420 | 1530 | |
1400 | 1500 | 1685 | 1590 | 1530 | 60 | 5 | 36-φ48 | 1540 | 1650 | |
1600 | 1800 | 1930 | 1820 | 1750 | 68 | 5 | 40-φ55 | 1660 | 1750 | |
1800 | 2000 | 2130 | 2020 | 1950 | 68 | 5 | 44-φ55 | 1790 | 1860 | |
2000 | 2200 | 2345 | 2230 | 2150 | 70 | 5 | 48-φ60 | 1920 | 1990 |
Mounted eccentric half ball valve product features
1, the structure adopts the eccentric tightening principle through the transmission mechanism to achieve the purpose of gate tightening, adjustment and closing, the sealing pair is the metal surface ring with hard surface contact seal, double eccentric structure in the opening of the valve spool is located in the ball room, the flow section is large, and the valve is not scoured, closed the valve spool is not scoured, open the valve spool spherical gradually along the seat, effectively remove the scale barrier, Achieve reliable sealing. It is especially effective for the mixed flow transportation of two-phase mixed flow with easy scaling and solid precipitation
2, the hemisphere of the valve with bimetal, base metal surfacing on different alloys, the valve seat is also made corresponding surfacing through special treatment, sealing surface combination into anti-corrosion, wear, high strength and other types, to meet the needs of different occasions
3, tight seal, conveying harmful gas can reach zero leakage
4. The spool of the sealing pair has a compensation amount. When the valve is worn, it can turn a little when closed to ensure reliable sealing and prolong the service life. In addition, the user will screw off the compression nut, adjust or replace the valve seat is still available to avoid the failure of the valve seal, the problem of the whole set scrap.
5, the mounted eccentric half ball valve structure is above a cover, can be repaired in the pipeline, convenient and labor-saving.
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