Investment Casting & Industrial Valves 
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Model: ZP
Large-Bore Stainless Steel Gate Valve (80-500mm)
- Nominal Diameter: DN80-DN500
- Pressure Rating: 1.0～25 MPa
- Flange End: GB/T9124 ANSI B16.5
- Suitable Media: Water, Steam, Oil, Slurry, Corrosive & Food-Grade Media, etc.
- Operating Temperature: -40 to 120℃
- Method of Operation: Manual, Electric, Pneumatic, Hydraulic
- Inspection & Testing: GB/T 13927, API 598
- Surface Treatment: Pickling, Passivation, Polishing (or as per customer request)
Materials
| Body/Bonnet | 304, 304L, 316, 316L |
| Gate | 304, 304L, 316, 316L |
| Stem | 304, 304L |
| Seal Material | PTMEG-based Elastomer |
Applications
Large-bore stainless steel gate valves resist corrosion, high pressure, and high temperature, and are used in petrochemical, coal processing, energy, municipal water, environmental, metallurgy, paper, marine, shipbuilding, food, pharmaceutical, and new materials industries. Valve type and stainless steel grade are selected to suit the conditions of each application.
Valve Parts
| No. | Component | Quantity |
| 1 | Connecting Flange | 1 |
| 2 | Deep Groove Ball Bearing | 1 |
| 3 | Single Direction Thrust Ball Bearing | 2 |
| 4 | Bearing Housing | 1 |
| 5 | Stem Assembly | 1 |
| 6 | Support Plate | 2 |
| 7 | Packing Gland | 1 |
| 8 | Gland Packing | N |
| 9 | Stem Seal Ring | 1 |
| 10 | Bonnet | 1 |
| 11 | Left Body | 1 |
| 12 | Bushing | 1 |
| 13 | Gate | 1 |
| 14 | Right Body | 1 |
| 15 | Gasket | 1 |
| 16 | Bushing | 1 |
| 17 | End Cap | 1 |
Dimensions
PN1.0MPa
| Size | L | D | K | n-Ø | a | H | |||
| Electric Operated | Manual Operated | ||||||||
| DN | NPS | mm | mm | mm | mm | mm | mm | mm | |
| 80 | 3" | 170 | 200 | 160 | 8-18 | 132 | 660 | 380 | |
| 100 | 4" | 189 | 220 | 180 | 8-18 | 156 | 690 | 420 | |
| 125 | 5" | 231 | 250 | 210 | 8-18 | 184 | 800 | 510 | |
| 150 | 6" | 251 | 285 | 240 | 8-22 | 211 | 870 | 580 | |
| 175 | 7" | 274 | 315 | 270 | 8-22 | 240 | 1040 | 730 | |
| 200 | 8" | 332 | 340 | 295 | 8-22 | 266 | 1120 | 800 | |
| 225 | 9" | 332 | 370 | 325 | 8-22 | 295 | 1190 | 870 | |
| 250 | 10" | 374 | 395 | 350 | 12-22 | 319 | 1350 | 1050 | |
| 300 | 12" | 374 | 445 | 400 | 12-22 | 370 | 1520 | 1120 | |
| 350 | 14" | 406 | 505 | 460 | 16-22 | 429 | 1580 | 1180 | |
| 400 | 16" | 425 | 450 | 565 | 515 | 16-26 | 480 | 1720 | 1330 |
| 450 | 18" | 490 | 615 | 565 | 20-26 | 530 | 1910 | 1470 | |
| 500 | 20" | 560 | 546 | 670 | 620 | 20-26 | 582 | 2080 | 1630 |
| 600 | 24" | 600 | 780 | 725 | 20-30 | 682 | 2280 | 1750 | |
| 700 | 28" | 700 | 895 | 840 | 24-30 | 794 | 2750 | 2200 | |
PN1.6MPa
| Size | L | D | K | n-Ø | a | H | |||
| Electric Operated | Manual Operated | ||||||||
| DN | NPS | mm | mm | mm | mm | mm | mm | mm | |
| 80 | 3" | 170 | 200 | 160 | 8-18 | 132 | 660 | 380 | |
| 100 | 4" | 189 | 220 | 180 | 8-18 | 156 | 690 | 420 | |
| 125 | 5" | 231 | 250 | 210 | 8-18 | 184 | 800 | 510 | |
| 150 | 6" | 251 | 285 | 240 | 8-22 | 211 | 870 | 580 | |
| 175 | 7" | 274 | 315 | 270 | 8-22 | 240 | 1040 | 730 | |
| 200 | 8" | 332 | 340 | 295 | 12-22 | 266 | 1120 | 800 | |
| 225 | 9" | 332 | 370 | 325 | 12-22 | 295 | 1190 | 870 | |
| 250 | 10" | 374 | 405 | 355 | 12-26 | 319 | 1350 | 1050 | |
| 300 | 12" | 374 | 460 | 410 | 12-26 | 370 | 1520 | 1120 | |
| 350 | 14" | 406 | 520 | 470 | 16-26 | 429 | 1580 | 1180 | |
| 400 | 16" | 425 | 450 | 580 | 525 | 16-30 | 480 | 1720 | 1330 |
| 450 | 18" | 490 | 640 | 585 | 20-30 | 548 | 1910 | 1470 | |
| 500 | 20" | 560 | 546 | 715 | 650 | 20-33 | 609 | 2080 | 1630 |
| 600 | 24" | 600 | 840 | 770 | 20-36 | 720 | 2280 | 1750 | |
| 700 | 28" | 700 | 910 | 840 | 24-36 | 794 | 2750 | 2200 | |
PN2.5MPa
| Size | L | D | K | n-Ø | a | H | |||
| Electric Operated | Manual Operated | ||||||||
| DN | NPS | mm | mm | mm | mm | mm | mm | mm | |
| 80 | 3" | 170 | 200 | 160 | 8-18 | 132 | 660 | 380 | |
| 100 | 4" | 189 | 235 | 190 | 8-22 | 156 | 690 | 420 | |
| 125 | 5" | 231 | 270 | 220 | 8-26 | 184 | 800 | 510 | |
| 150 | 6" | 251 | 300 | 250 | 8-26 | 211 | 870 | 580 | |
| 175 | 7" | 274 | 330 | 280 | 12-26 | 248 | 1040 | 730 | |
| 200 | 8" | 332 | 360 | 310 | 12-26 | 274 | 1120 | 800 | |
| 125 | 9" | 332 | 395 | 340 | 12-30 | 302 | 1190 | 870 | |
| 250 | 10" | 374 | 425 | 370 | 12-30 | 330 | 1350 | 1050 | |
| 300 | 12" | 374 | 485 | 430 | 16-30 | 389 | 1520 | 1120 | |
| 350 | 14" | 406 | 555 | 490 | 16-33 | 448 | 1580 | 1180 | |
| 400 | 16" | 425 | 450 | 620 | 550 | 16-36 | 503 | 1720 | 1330 |
| 450 | 18" | 490 | 670 | 600 | 20-36 | 548 | 1910 | 1470 | |
| 500 | 20" | 560 | 546 | 730 | 660 | 20-36 | 609 | 2080 | 1630 |
| 600 | 24" | 600 | 845 | 770 | 20-39 | 720 | 2280 | 1750 | |
| 700 | 28" | 700 | 960 | 875 | 24-42 | 820 | 2750 | 2200 | |
PN4.0MPa
| Size | L | D | K | n-Ø | a | H | ||
| Electric Operated | Manual Operated | |||||||
| DN | NPS | mm | mm | mm | mm | mm | mm | mm |
| 100 | 4" | 244 | 235 | 190 | 8-22 | 156 | 740 | 420 |
| 125 | 5" | 283 | 270 | 220 | 8-26 | 184 | 790 | 480 |
| 150 | 6" | 314 | 300 | 250 | 8-26 | 211 | 860 | 530 |
| 175 | 7" | 314 | 350 | 295 | 12-30 | 258 | 1060 | 660 |
| 200 | 8" | 374 | 375 | 320 | 12-30 | 284 | 1150 | 750 |
| 225 | 9" | 374 | 420 | 355 | 12-33 | 315 | 1150 | 750 |
| 250 | 10" | 403 | 450 | 385 | 12-33 | 345 | 1320 | 930 |
| 300 | 12" | 421 | 515 | 450 | 16-33 | 409 | 1320 | 930 |
| 350 | 14" | 475 | 580 | 510 | 16-36 | 465 | 1580 | 1130 |
| 400 | 16" | 518 | 660 | 585 | 16-39 | 535 | 1640 | 1190 |
| 450 | 18" | 580 | 685 | 610 | 20-39 | 560 | 2080 | 1650 |
| 500 | 20" | 650 | 755 | 670 | 20-42 | 615 | 2300 | 1800 |
| 600 | 24" | 720 | 890 | 795 | 20-48 | 735 | 2450 | 2200 |
PN6.3MPa
| Size | L | D | K | n-Ø | a | H | ||
| Electric Operated | Manual Operated | |||||||
| DN | NPS | mm | mm | mm | mm | mm | mm | mm |
| 100 | 4" | 244 | 250 | 200 | 8-26 | 168 | 740 | 420 |
| 125 | 5" | 283 | 295 | 240 | 8-30 | 202 | 790 | 480 |
| 150 | 6" | 314 | 345 | 280 | 8-33 | 240 | 860 | 530 |
| 175 | 7" | 314 | 375 | 310 | 12-33 | 270 | 1060 | 660 |
| 200 | 8" | 374 | 415 | 345 | 12-36 | 300 | 1150 | 750 |
| 225 | 9" | 374 | 440 | 370 | 12-36 | 325 | 1150 | 750 |
| 250 | 10" | 403 | 470 | 400 | 12-36 | 352 | 1320 | 930 |
| 300 | 12" | 421 | 530 | 460 | 16-36 | 412 | 1320 | 930 |
| 350 | 14" | 475 | 600 | 525 | 16-39 | 475 | 1580 | 1130 |
Notes
- The valve specifications shown in the tables above are for reference only.
- Product specifications and technical data may change due to product improvements or updates, please contact us for the latest information.
- Valves can be customized according to customer requirements.
Investment Casting & Valve Manufacturing Since 1987
At SDPLDL, we are a trusted manufacturer specializing in precision investment casting and industrial valves for global markets. We operate our own manufacturing facility featuring over 200 sets of advanced manufacturing equipment and an in-house testing center equipped with 16-ton dynamic balancing machines. Our integrated manufacturing capabilities allow us to seamlessly produce precision investment casting valves, custom stainless steel large-diameter valves, and slurry valves under strict compliance with ISO 9001 standards.
