Check Valve Series

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Two-plate Tiny Drag Slow Close Butterfly Check Valve

manufacturer: Shanghai Fengqi Industry Development Co., Ltd.
Eml: sales@fengqi.sh.cn

Tel: 86 (21) 3652 8716
Mob: (86) 138 1635 6498

product drawing

Two-plate tiny drag slow close butterfly check valves
Two-plate tiny drag slow close butterfly check valves

Structural features

ZHYH46/ZHYH46EJ-type two-plate tiny drag slow close butterfly check valve can be used in clean water, sewage, sea water and other media drains pipes, to prevent the media backflow, and also can restrict the destructive water hammer effectively, ensuring the safe use of pipelines. The valve has new structure, small size, and reliable sealing, smooth open and close, wear-resistance, long service life, oil pressure and slow close are not affected by media, small flow resistance and wide applicable scope, good energy-saving effect.

Dimensions & constructral diagram

Two-plate tiny drag slow close butterfly check valve constructral diagram
Two-plate tiny drag slow close butterfly check valve constructral diagram

The materials of main parts

type body,disc stem, hydro-cylinder, piston spring seat
ZHYH46H/W-16/25/40CP ZHYH46ej-16/25 carbon steel, stainless steel SS SS SS

Main technical parameter

type nominal pressure (MPa) test pressure(MPa) working temperature (℃) applicable medium
shell sealing
ZHYH46H/W-16/25/40CP ZHYH46ej-16/25 1.6 2.4 1.76 ≤120 water sea water, sewage
2.5 3.75 2.75
4.0 6.0 4.4

Main external dimensions (flange connection dimension:PN1.6、PN2.5、PN4.0MPa according to JB/T79-94 standard)

nominal diameter DN(mm) L H H1 nominal diameter DN(mm) L H H1
100 240 280 115 450 470 585 351
125 260 290 142 500 500 640 379
150 275 310 172 600 560 720 434
200 305 350 210 700 620 750 491
250 340 415 240 800 680 792 549
300 370 450 264 900 740 900 600
350 400 480 294 1000 800 975 655
400 435 550 324 1200 920 1140 770
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