Model ENH47X, ENH47H, ENHH47H, ENHDH47X Butterfly Buffering Check Valves are used on the outlet of the water pump of industrial water supply and sludge treatment plant to prevent the medium inside the pipe network from going back, and remove automatically the destructive water hammer so as to ensure both pump and pipeline not to get damaged. It consists of body, disc, buffer and micro-adjusting valve. And it features by the brand new structure, small volume, small fluid resistance, reliable seal, wearable and good buffering performance. It is really the best product for industrial use of water and city sludge drainage.

Part	Body	Butterfly	Seal-ring	Stem	Packing
Material	Casting pig	Casting pig、Cast steel、Ductile	Oil-resisting chemigum, chloroprene rubber	Stainless steel	PTFE

Model	PN(MPa)	Test pressure (MPa)		Working pressure	Medium temperature	Suitable medium
		Casing	Seal
H47X,H47H,HH47X, HH47XF ,HH47H, HDH47X	1.0	1.5	1.1	1.0	≤80℃	Water, oil good, sea water, sludge
	1.6	2.4	1.75	1.6
	2.5	3.75	2.75	2.5

DN mm	Dimension (mm)
	L	D	D1	D2	H	B1	B2
200	230	360	310	278	550	540	600
250	250	425	370	332	630	600	700
300	270	485	430	390	690	650	740
350	290	550	490	448	780	710	800
400	310	610	550	505	860	770	870
450	330	660	600	555	910	830	920
500	350	730	660	610	980	900	1000
600	390	840	770	718	1070	1090	1250
700	430	955	875	815	1220	1200	1360
800	470	1070	990	930	1320	1320	1480
900	510	1180	1090	1025	1430	1420	1580
1000	550	1350	1210	1140	1550	1550	1700
1200	630	1525	1420	1350	1800	1780	1950
1400	710	1750	1640	1560	1980	2000	2175