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The X43H flange lifting hard seal plug valve is suitable for cutting off or connecting pipeline media in various working conditions such as petroleum, chemical, pharmaceutical, fertilizer, and power industries with a nominal pressure of Class150LB~2500LB and a working temperature of -29~550 ºC.
A. The product has reasonable structure,reliable sealing,excelient performance and beautiful appearance
F. The materials of the parts and sizes of flanges can be reasonabnly configured according the actual operation aondition of the requirements of the customers,so as to meet the various needs of engineering.

NO. |
Part name |
Material |
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A216 WCB |
A217 WC9 |
A217 C5 |
A351 CF8 |
A351 CF8M |
A351 CF3 |
A351 CF3M |
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1 |
Body |
A216 WCB |
A217 WCB |
A217 C5 |
A351 CF8 |
A351 CF8M |
A351 CF3 |
A351 CF3M |
2 |
Plug |
A351 CF8 |
A351 CF8 |
A351 CF8 |
A351 CF8 |
A351 CF8M |
A351 CF3 |
A351 CF3M |
3 |
Gasket |
Flexible graphite+stainless steel/PTFE |
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4 |
Cover |
A216 WCB |
A217 WC9 |
A217 C5 |
A351 CF8 |
A351 CF8M |
A351 CF3 |
A351 CF3M |
5 |
Bolt |
A193 B7 |
A193 B16 |
A193 B16 |
A1293 B8 |
A193 B8M |
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6 |
Nut |
A194 2H |
A194 4 |
A194 4 |
A194 8 |
A194 8M |
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7 |
Packing |
Flexible graphite/PTFE |
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8 |
Gland |
A216 WCB |
A216 WC9 |
A216 C5 |
A351 CF8 |
A351 CF8M |
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9 |
Wrench |
A216 WCB |
A216 WC9 |
A216 C5 |
A351 CF8 |
A351 CF8M |
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10 |
Yoke nut |
A439-D2/Cu-Allog |
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11 |
Hand wheel |
ASTM A536 Gr.60-40-18 A216 WCB |
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Dimensions |
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Class 150Lb |
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Size |
inch |
1/2 |
3/4 |
1 |
1-1/4 |
1-1/2 |
2 |
2-1/2 |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
14 |
L-RF |
mm |
108 |
117 |
127 |
140 |
165 |
178 |
190 |
203 |
229 |
254 |
267 |
292 |
330 |
356 |
381 |
H |
mm |
190 |
195 |
225 |
260 |
280 |
310 |
340 |
395 |
435 |
470 |
535 |
590 |
630 |
680 |
720 |
W |
mm |
120 |
140 |
140 |
180 |
200 |
220 |
260 |
300 |
300 |
340 |
400 |
450 |
450 |
500 |
500 |
Weight |
Kg |
9 |
10 |
11 |
17 |
19 |
23 |
25 |
32 |
55 |
82 |
98 |
130 |
178 |
250 |
380 |

Q:When should a plug valve be used?
The application scenarios of plug valves are well-defined, primarily occurring in situations where rapid on/off control of fluid pipelines is required or periodic flushing of pipeline impurities is necessary.
Q:What specific areas are involved?
For instance, pipelines in the petroleum and chemical industries that transport corrosive oils/gases or chemical slurries, as well as sewage conveyance lines handling wastewater containing sediment impurities, all require flushable plug valves with excellent sealing performance and erosion resistance for effective control.
Our core advantage stems from our dual control over materials and craftsmanship: the entire valve body is cast integrally from food-grade/industrial-grade stainless steel, boasting superior corrosion resistance compared to ordinary cast iron valves. It can operate stably for extended periods under complex conditions such as acid, alkali, and high humidity, without experiencing rust or leakage issues. The sealing surface of the plug is precisely ground and paired with a self-tightening sealing structure, ensuring easy and effortless switching operations while maintaining a long-term zero-leakage sealing effect. Its service life is extended by over 30% compared to ordinary plug valves. Furthermore, our products support customization of diameter, pressure rating, and connection method according to specific working conditions. All batches undergo pressure and leak testing before leaving the factory. They are suitable for lifting and conveying scenarios in various fields such as chemical, food, and water supply and drainage. Our after-sales team responds within 72 hours for on-site assistance, addressing all installation, commissioning, and maintenance issues for you.