The HH49X micro resistance slow closing butterfly check valve is mainly used in the supply and drainage pipelines of clean water, source water, sewage, seawater, and other media. It is installed at the outlet of the water pump to cut off the backflow of the media and eliminate atomic energy damaging water hammer, protecting the safe operation of the pipeline and water pump.
Item NO.:
XUVAL88-268Lead Time:
50 DaysProduct Orgin:
CHINABrand:
XUVALShipping Port:
ShanghaiPayment:
100%TTMOQ:
11. Small in size, light in weight, and with a structural length only about one-third that of a swing check valve.
2. The slow closing system has excellent performance and is not affected by the medium in the pipeline. The valve disc first closes quickly and then slowly, which can prevent ring breaking water hammer.
3. Rubber soft seal, good sealing performance, wear resistance, and long service life.
4. Rubber buffering, smooth opening and closing, no vibration, no noise.
5. Compared to old-fashioned check valves, it has a smaller flow resistance and significant energy-saving effect.
Main performance specifications
Model | HH47X-10 HH48X-10 HH49X-10 | HH47X-16 HH48X-16 HH49X-16 | |
Nominal Pressure | PN1.0MPa | PN1.6MPa | |
Nominal Diameter | DN50~800mm | DN50~800mm | |
Seal test pressure | 1.1MPa | 1.76MPa | |
Shell Test Pressure | 1.5MPa | 2.4MPa | |
Material for main parts | Valve body | Grey cast iron or ductile iron | Grey cast iron or ductile iron |
Valve disc | Aluminum bronze | Aluminum bronze | |
Valve stem | Stainless steel | Stainless steel | |
Spring | Stainless steel | Stainless steel | |
Seat Seals Face | Rubber | Rubber |
Main overall dimensions
Nominal diameter DN | Size (mm) | ||||||||
mm | in | D | D1 | D2 | H | H1 | L | Z-фd | Bolt |
150 | 6 | 280 | 240 | 210 | 228 | 172 | 210 | 8-ф23 | 8-M20 |
200 | 8 | 335 | 295 | 265 | 270 | 210 | 230 | 8-ф23 | 8-M20 |
250 | 10 | 390 | 350 | 320 | 305 | 240 | 250 | 12-ф23 | 12-M20 |
300 | 12 | 440 | 400 | 368 | 367 | 264 | 270 | 12-ф23 | 12-M20 |
350 | 14 | 500 | 460 | 428 | 422 | 294 | 290 | 16-ф23 | 16-M20 |
400 | 16 | 565 | 515 | 482 | 462 | 324 | 310 | 16-ф23 | 16-M22 |
450 | 18 | 615 | 565 | 532 | 497 | 351 | 330 | 20-ф25 | 20-M22 |
500 | 20 | 670 | 620 | 585 | 532 | 379 | 350 | 20-ф25 | 20-M22 |
600 | 24 | 780 | 725 | 685 | 607 | 434 | 390 | 20-ф30 | 20-M27 |
700 | 28 | 895 | 840 | 800 | 702 | 491 | 430 | 24-ф30 | 24-M27 |
800 | 32 | 1010 | 950 | 905 | 792 | 549 | 470 | 24-ф34 | 24-M30 |
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