Tel: 15351513002
Phone: 15351513006
Phone: 0515-89118577
0515-89118677
0515-89118277
Fax: 0515-8911 8000
E-mail：jtongcn 126.com
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Address: Oubei Pump and Valve Industrial Park, Binhai Economic Development Zone, Jiangsu Province
PQ40H eccentric half ball valve/QP640H pneumatic eccentric half ball valve/PQ940H electric eccentric half ball valve utilizes an eccentric valve body, eccentric sphere, and valve seat. When the valve stem rotates, it automatically centers on a common trajectory and becomes tighter during the closing process, achieving a good sealing effect. The ball and seat of the valve are completely detached, eliminating the wear of the sealing ring and overcoming the problem of continuous wear between the traditional ball seat and ball sealing surface. Non metallic elastic materials are embedded in the metal seat, and the metal surface of the valve seat is well protected. Eccentric hemispherical valves are particularly suitable for media such as steel industry, aluminum industry, fibers, small solid particles, pulp, coal ash, petroleum gas, etc.
Main component materials of eccentric hemispherical valve
Serial Number | name | code | material | ||||
WCB | 304 CF8 | 316 CF8M | |||||
1 | valve body | WCB ZG230-450 | 0Cr18Ni9 | 0Cr18Ni12Mo2Ti | |||
2 | LOWER COVER | Q235-A | 1Cr18Ni9Ti | 0Cr18Ni12Mo2Ti | |||
3 | Hexagonal socket head screw | GB/T70-2000 | Q235-A | 1Cr17Ni2 | 0Cr18Ni12Mo2Ti | ||
4 | Lower fixed shaft adjustment bolt | Q235-A | 1Cr17Ni2 | 1Cr17Ni2 | |||
5 | hex nut | GB/T6710-2000 | Q235-A | 1Cr17Ni2 | 1Cr17Ni2 | ||
6 | Lower gasket | Stainless steel flexible graphite; PTFE; 316 sandwiched with flexible graphite | |||||
7 | lower bearing | 0Cr18Ni9Ti | 0Cr18Ni9Ti | 0Cr18Ni12Mo2Ti | |||
8 | Lower fixed shaft | 2Cr13 | 304 | 0Cr18Ni12Mo2Ti | |||
9 | sphere | ZG2Cr13 | 0Cr18Ni9 | 0Cr18Ni12Mo2Ti | |||
10 | Valve seat pressure ring | Q225-A | 1Cr18Ni9Ti | 0Cr18Ni12Mo2Ti | |||
11 | valve seat | Q225-A | PTFE/1Cr18Ni12Mo2Ti | PTFE/1Cr18Ni12Mo2Ti | |||
12 | Hexagonal socket head screw | GB/T70-2000 | Q235-A | 1Cr17Ni2 | 1Cr17Ni2 | ||
13 | Valve seat gasket | Stainless steel flexible graphite | 1Cr17Ni2 | 0Cr18Ni12Mo2Ti | |||
14 | valve stem | 2Cr13 | 1Cr18Ni9Ti | 0Cr18Ni12Mo2Ti | |||
15 | Upper bearing | 0Cr18Ni9Ti | 0Cr18Ni9Ti | 0Cr18Ni12Mo2Ti | |||
16 | Split circular ring | 1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni9Ti | |||
17 | locating ring | 1Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti | |||
18 | filler | Flexible graphite | Flexible graphite；PTFE | Flexible graphite；PTFE | |||
19 | Hexagonal plug gasket | 0Cr18Ni9Ti | 0Cr18Ni9Ti | 0Cr18Ni9Ti | |||
20 | Hexagonal plug | 2Cr13 | 1Cr17Ni2 | 1Cr17Ni2 | |||
21 | Hexagonal plug | 2Cr13 | 1Cr17Ni2 | 1Cr17Ni2 | |||
22 | support | WCB ZG230-450 | WCB；304 | WCB；304 | |||
23 | Double headed bolt | GB/T901-1988 | 35CrMoA | 1Cr17Ni2 | 1Cr17Ni2 | ||
24 | hex nut | GB/T6170-2000 | Q245-A | 0Cr18Ni9 | 0Cr18Ni9 | ||
25 | Packing Bushing | 1Cr13 | 1Cr18Ni12Mo2Ti/1Cr18Ni9 | 1Cr18Ni12Mo2Ti/1Cr18Ni9 | |||
26 | hold-down grid | WCB | 0Cr18Ni9 | 0Cr18Ni9 | |||
27 | Double headed bolt | GB/T901-1988 | 35CrMoA | 1Cr17Ni2 | 1Cr17Ni2 | ||
28 | hex nut | GB/T6170-2000 | Q245-A | 0Cr18Ni | 0Cr18Ni | ||
29 | hexagon bolt | GB/T5783-200 | Q235-A | 1Cr17Ni2 | 1Cr17Ni2 | ||
30 | Drive device | ||||||
31 | Hexagonal plug gasket | 0Cr18Ni9Ti | 0Cr18Ni9Ti | 0Cr18Ni9Ti | |||
32 | Hexagonal plug | 2Cr13 | 0Cr18Ni9Ti | 0Cr18Ni9Ti | |||
Performance Specification for Eccentric Hemisphere Valve
Property | MATERIAL | ||||||
WCB | 304 | 316 | 304L | 316L | 321 | ||
ZG230 | 0Cr18Ni9（CF8） | 1Cr18Ni12Mo2Ti | 00Cr18Ni10 | 00Cr17Ni14Mo2 | ZG7Cr18Ni9T | ||
Applicable Medium | Water, oil, steam | Nitric Acid | Acetic acid | Strong oxidizing medium | Corrosive media such as urea | Nitric Acid | |
RangeMpa | |||||||
project | nominal pressure | Shell pressure test | sealing test | Upper sealing test | Low pressure sealing test | Ultrasonic testing | |
test medium | water Mpa | water Mpa | water Mpa | gas Mpa | GB/T6440-1992 | ||
time | （S） | 120 | 60 | 60 | 0.5~0.6 | ||
Stress testing | 1.0Mpa | 1.5 | 1.1 | 1.1 | |||
1.6Mpa | 2.4 | 1.76 | 1.76 | ||||
2.5Mpa | 3.75 | 2.75 | 2.75 | ||||
Main external dimensions of eccentric hemispherical valve
nominal pressurePN/Mpa | Nominal DiameterDN/mm | size（mm） | |||||||
L | D | K | d | f | C | Z-￠d | H | ||
1.6
| 40 | 165 | 150 | 110 | 85 | 3 | 16 | 4-￠18 | |
50 | 178 | 165 | 125 | 100 | |||||
65 | 190 | 185 | 145 | 120 | 18 | 280 | |||
80 | 203 | 200 | 160 | 135 | 20 | 8-￠18 | 320 | ||
100 | 229 | 220 | 180 | 155 | 370 | ||||
125 | 254 | 250 | 210 | 185 | 22 | 430 | |||
150 | 267 | 285 | 240 | 210 | 24 | 8-￠23 | 510 | ||
200 | 292 | 340 | 295 | 265 | 26 | 12￠-23 | 600 | ||
250 | 330 | 405 | 355 | 320 | 30 | 12-￠26 | 690 | ||
300 | 502 | 460 | 410 | 375 | 4 | 760 | |||
350 | 572 | 520 | 470 | 435 | 34 | 16-￠26 | 830 | ||
400 | 610 | 580 | 525 | 485 | 36 | 16-￠30 | 925 | ||
450 | 660 | 640 | 585 | 545 | 40 | 20-￠30 | 1025 | ||
500 | 700 | 715 | 650 | 608 | 44 | 20-￠34 | 1120 | ||
600 | 813 | 840 | 770 | 718 | 5 | 48 | 20-￠36 | 1210 | |
Tel: 15351513006
Landline: 0515-89118577
Fax: 0515-8911 8000
Email: jtongcn 126.com
Address: Oubei Pump and Valve Industrial Park, Binhai Economic Development Zone, Jiangsu Province
15351513006
