Gate valve
Gate valve is one of most extensive use valves.
Gate valve, it's closing part (flashboard) moves along vertical direction of passage axis, the uses is stopping the medium in pipeline, that is completely start and close. Generally speaking, gate valve can't be used for adjusting the flow, it is suitable for low temperature and pressure as well as high temperature and pressure, the different material gate valve can be used in different medium, but usually it can't be used in the pipeline of transporting slurry etc. medium.
Gate valve has following advantages:
1. low liquid resistance
2. low force moment required for start and close
3. it can be used in rig net pipeline which the medium flows in two directions, that is say no direction limitation of medium flow.
4. lower errosion to seal surface than stop valve when it is working.
5. simple structure, good manufacturing process
luxury hotels in Karpun 6. short structure
Gate valve has different kinds of structure forms, the main distinguish is different structure form of seal parts. The popular types of gate valve are slab gate valve and wedging gate valve, and it can be divided as risefall rod gate valve and revolving rod gate valve according to the valve rod's structure.
The principle of chosing wedge gate valve:
1. The requirement of liquid characteristic: low flow resistance, good flow characteristics, strict requirement for seal.
2. The medium of high temperature, high pressure. Such as high pressure steam, high temperature and high pressure oil products.
3. Low temperature medium. Such as liquid nitrogen, liquid hydrogen, liquid oxygen etc. medium.
4. Low pressure and large caliber, such as water project, sewage treatment project.
5. Position of installation: chose revolving rod gate valve when the installation height is limited, chose risefall rod gate valve when the installation height is unlimited.
6. Wedge gate valve is only for start and close, it can't be used for adjusting or throttling.
7. Wedge gate valve is suitable in the condition of low frequency of start and close.
| Model | Nominal pressure | Nominal Dimension | Main Dimension | Performance | Valve Body | Applied Standard |
hotels Granada | L | D | D1 | Z | Ø | H | Applied Temperature | Applied Medium |
| Z41H-64 | 6.4 | 40 50 65 80 100 125 150 200 250 300 350
| 240 250 280 320 350 400 450 550 650 750 850
| 165 175 200 210 250 295 340 405 470 530 595 | 125 135 160 170 200 240 280 345 400 460 525
| 4 4 8 8 8 8 8 12 12 16 16 | 23 23 23 23 25 30 34 34 41 41 41 | 347 438 473 550 669 772 893 1110 1332 1804 2080 | <=425 | Oil,Water Steam | ? | GB12234 |
| Z41H-100 | 10 | 15 20 25 32 40 50 65 80 100 125 150 200 | 170 190 210 230 240 250 280 310 3850 400 450 550 | 105 125 135 150 165 195 220 230 265 310 350 430 | 75 90 110 110 125 145 170 180 210 250 290 360 | 4 4 4 4 4 4 8 8 8 8 12 12 | 14 18 18 23 23 25 25 25 30 34 34 41 | 248 274 300 345 382 505 545 605 665 700 985 1200 | <=425 | Oil,Water Steam | WCB | GB12234 |
| Model | Nominal pressure | Nominal Dimension | Main Dimension | Performance | Valve Body | Applied Standard |
| L | D | D1 | Z | Ø | H | Applied Temperature | Applied Medium |
| Z41H-16C | 1.6 | 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 500 600 | 130 150 160 180 240 250 265 280 300 325 350 400 450 500 550 600 700 810 | 95 105 115 135 145 160 180 195 215 245 280 335 405 460 520 580 705 840 | 65 75 85 100 110 125 145 160 180 210 245 295 355 410 470 525 650 770 | 4 4 4 4 4 4 4 8 8 8 8 8 12 12 12 16 16 20 | 14 14 14 18 18 18 18 18 18 18 23 23 25 25 25 30 34 41 | 238 288 310 318 355 371 373 430 500 614 650 1075 1275 1740 1775 1930 2070 2887 | <=425 | Oil,Water Steam | WCB | Chambre Vilamoura GB12234 |
| Model | Nominal pressure | Nominal Dimension | Main Dimension | Performance | Valve Body | Applied Standard |
| L | D | D1 | Z | Ø | H | Applied Temperature | Applied Medium |
| Z41H-40 | 4.0 | 50 65 80 100 125 150 200 250 300 350 400 | 250 280 310 350 400 450 550 650 750 850 950 | 160 180 195 230 270 300 375 445 510 570 655 | 125 45 160 190 220 250 320 385 450 510 585 | 4 8 8 8 8 8 12 12 16 16 16 | 18 18 18 23 25 25 30 34 34 34 41 | 438 473 550 669 776 883 1086 1298 1537 1631 2020 | <=425 | Oil,Water Steam | Carbon Steel | GB12234 |
| Model | Nominal pressure | Nominal Dimension | Main Dimension | Performance | Valve Body | Applied Standard |
| L | D | D1 | Z | Ø | H | Applied Temperature | Applied Medium |
| ? Z41T-10 | 1.0 | 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700
| 180 195 210 230 255 280 330 380 420 450 480 510 540 600 660 | 160 180 195 215 245 280 335 390 440 500 565 615 670 780 895
| 125 145 160 180 210 240 295 350 400 460 515 565 620 725 840
| 4 4 4 8 8 8 8 12 12 12 16 20 20 20 24 | 18 18 18 18 18 23 23 23 23 23 25 25 25 30 30 | 289 334 377 433 527 596 772 905 1045 1177 1345 1497 1936 2110 2410 | <=200 | Water Steam | HT200 | GB122312 |
| Model | Nominal pressure | Nominal Dimension | Main Dimension | Performance | Valve Body | Applied Standard |
| L | D | D1 | Z | Ø | H | Applied Temperature | Applied Medium |
| Z41W-10 | 1.0 | 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 | 180 195 210 230 255 290 330 380 420 450 480 510 540 |
