piston gas pilot valve
nominal diameter: dn15 ~ 500mm
nominal pressure: pn1.6 ~ 16.0mpa
main material: carbon steel, stainless steel
temperature: 0 ~ 80 ℃
operation: manual
flange standard: gb / t17241. 6, gb / t9113
test standards: gb / t13927, api598
yk43x pilot piston gas pressure regulator introduced
this series of pilot-piston gas pressure reducing valve belongs to the pilot piston type pressure reducing valve. the main valve and pilot valve composed of two parts. the main valve from the valve seat, the main valve disk, piston, spring and other components. pilot valve mainly by the valve seat, disc, diaphragm, spring, adjusting spring and other components. by adjusting the spring pressure to set the outlet pressure, the use of diaphragm sensing outlet pressure changes, through the pilot valve opening and closing drive piston to adjust the size of the main valve throttle flow area, to achieve decompression regulator function. the pilot-style large diaphragm high sensitivity pressure reducing valve is mainly used for gas lines, such as air, nitrogen, oxygen, hydrogen, liquefied gas, natural gas and other gases.
yk43x pilot piston gas valve main technical parameters and performance indicators:
| nominal pressure (mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
| shell test pressure (mpa) * | 2.4 | 3.75 | 6.0 | 9.6 | 15.0 | 24 |
| seal test pressure (mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
| the maximum inlet pressure (mpa) | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
| outlet pressure range (mpa) | 0.1-1.0 | 0.1-1.6 | 0.1-2.5 | 0.5-3.5 | 0.5-3.5 | 0.5-4.5 |
| pressure characteristic deviation (mpa) △ p2p | gb12246-1989 | |||||
| flow characteristics deviation (mpa) p2g | gb12246-1989 | |||||
| minimum pressure difference (mpa) | 0.15 | 0.15 | 0.2 | 0.4 | 0.8 | 1.0 |
| leakage | x / f (polytetrafluoroethylene / rubber): oy (hard seal): gb12245-1989 | |||||
*: shell test does not include diaphragm, top cover
yk43x -type pilot-piston gas pressure relief valve main dimensions
| dn |
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dimensions | ||||||||
| l | h | hl | ||||||||
| 1.6 / 2.5mpa | 4.0mpa | |||||||||
| 15 | 160 | 180 | 290 | 90 |
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| 20 | 160 | 180 | 300 | 98 |
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| 25 | 180 | 200 | 300 | 110 |
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| 32 | 200 | 220 | 300 | 110 |
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| 40 | 220 | 240 | 320 | 125 |
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| 50 | 250 | 270 | 320 | 125 |
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| 65 | 280 | 300 | 325 | 130 |
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| 80 | 310 | 330 | 365 | 160 |
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| 100 | 350 | 380 | 365 | 170 |
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| 125 | 400 | 450 | 475 | 200 |
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| 150 | 450 | 500 | 475 | 210 |
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| 200 | 500 | 550 | 515 | 240 |
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| 250 | 650 | 560 | 290 |
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| 300 | 800 | 705 | 335 |
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| 350 | 850 | 745 | 375 |
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| 400 | 900 | 780 | 405 |
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| 450 | 900 | 730 | 455 |
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| 500 | 950 | 835 | 465 |
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| dn | dimensions | |||||||||
| l | h | hl | ||||||||
| 6.4mpa | 10.0 / 16.0 mpa | |||||||||
| 15 | 180 | 180 | 300 | 100 | ||||||
| 20 | 180 | 200 | 310 | 105 | ||||||
| 25 | 200 | 220 | 31 | 120 | ||||||
| 32 | 220 | 230 | 310 | 120 | ||||||
| 40 | 240 | 240 | 335 | 135 | ||||||
| 50 | 270 | 300 | 335 | 135 | ||||||
| 65 | 300 | 340 | 340 | 140 | ||||||
| 80 | 330 | 360 | 380 | 170 | ||||||
| 100 | 380 | 380 | 185 | |||||||
| 125 | 450 | 490 | 215 | |||||||
| 150 | 500 | 490 | 225 | |||||||
| 200 | 550 | 535 | 260 | |||||||
| 250 | 650 | 580 | 310 | |||||||
| 300 | 800 | 725 | 355 | |||||||
| 350 | 850 | 765 | 395 | |||||||
| 400 | 900 | 800 | 435 | |||||||
| 500 | 950 | 855 | 495 | |||||||