Butterfly Buffering Check Valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
E-mail: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
Butterfly buffering check valves
Principles and features
HH47, HH44XF, HDH47X butterfly buffering check valve is mainly used in the pump outlet of industrial water supply, sewage treatment plants, to prevent the pipe network medium reflux, eliminate the destructive water hammer automaticly, thus ensuring the pumps and pipes are not damaged. Butterfly buffering check valve consists of body, disc, buffering device and micro-regulating valve. Butterfly buffering check valve has a new structure, small size, small fluid resistance, smooth operation, reliable sealing, wear resistance, good buffering performance characteristics, H47X, HH47X, HH47H, H47XF, HDH47X butterfly buffering check valves are the best products of industrial water and urban sewage.
Technical parameter
nominal pressure：1.0～2.5MPa
nominal diameter：40～1400mm
medium： water,oil,sea water,sewage
suitable temperature：0～80℃（if needed，it can get to 200℃）
flange standard：GB/T 17241.6 GB/T9113
test standard：GB/T 13927 AP1598
Typical installation diagram
Butterfly buffering check valve typical installation diagram
Dimensions & constructral diagram
Butterfly buffering check valve constructral diagram(pic1)
Butterfly buffering check valve constructral diagram(pic2)
Typical installation diagram
| part name | body | disc | Sealing ring | stem | packing |
| material | Grey cast iron, carbon steel | grey cast iron,cast steel,ductile cast iron | nitrile oil resistant rubber, neoprene | stainless steel | PTFE |
The external and connection dimensions
| DN(㎜) | 200 | 250 | 300 | 350 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 | 1200 | 1400 |
| L | 230 | 250 | 270 | 290 | 310 | 350 | 390 | 430 | 470 | 510 | 550 | 630 | 710 |
| H | 550 | 630 | 690 | 780 | 860 | 980 | 1070 | 1220 | 1320 | 1430 | 1550 | 1800 | 1980 |
| B1 | 540 | 600 | 650 | 710 | 770 | 900 | 1090 | 1200 | 1320 | 1420 | 1550 | 1780 | 2000 |
