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Anti-silt butterfly valve

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Dns9/7/343X(T) type anti-sand butterfly valve

Product number:Dns9/7/343X(T)

product description:

　　The design idea of this series of butterfly valves comes from Ningxia "Yellow Water Diversion Project".Aiming at the characteristics of the Yellow River cement with high sand content (the maximum content is 80Kg/m4, the annual average sand content is 133Kg/m2), a new generation developed by repeated experiments and improvements on the basis of summing up past experiences and lessons Put the sand butterfly valve.Nowadays, most cities are severely short of water, and water diversion projects have been launched. Rivers and lakes contain silt. Ordinary valves are corroded by the impact of silt in the water diversion pipelines, causing serious sealing surfaces in a short time (6-XNUMX months) Damaged and cannot work normally.Compared with conventional butterfly valves, this valve has been greatly improved in terms of structural design, material selection, manufacturing process, etc., so that it can adapt to harsh working conditions.

Product Usage:

　　This valve is mainly used in the water diversion pipeline to realize the functions of flow adjustment, check and cut-off seal.If this valve is equipped with a hydraulic device, the pump outlet of a long pipeline can be installed, and it can be used as the most ideal hydraulic control check butterfly valve.

Features:

1. The streamlined valve internal cavity structure design not only reduces the flow resistance, but also reduces the wear of the valve internal wall by the impact of sediment.
2. Brand-new design idea, the valve seat ring adopts specially formulated rubber material, which has high resistance to sand impact and abrasion.It has fundamentally changed the situation that the continuous selection of new wear-resistant metal materials in the past has increased the manufacturing cost but the use effect is not ideal.
3. The anti-silt structure of the shaft end has been tested in practice, which effectively protects the valve shaft, bearings, packing and other parts from corrosion by sand.
4. The new structure design of the shaft sleeve not only ensures that the performance is not reduced, but also greatly reduces the manufacturing cost.The overall size is smaller, and the weight of the whole machine is lighter.
5. The lubricated shaft sleeve structure design greatly reduces the operating torque, and the switch is more flexible and labor-saving.
6. One valve can be used for multiple purposes and can be equipped with different driving devices to achieve different functions: when equipped with a manual or electric device, it can be used to adjust flow, pressure or cut-off seal; when equipped with a hydraulic drive device, it can be installed at the pump outlet and used Stop and eliminate water hammer.
7. It can be installed horizontally or vertically.

The main technical parameters

Nominal passage (mm)		400 ~ 2000	400 ~ 2000	200 ~ 2000	200 ~ 2000
Nominal pressure (MPa)		0.25	0.6	1.0	1.6
test pressure	Strength test	0.375	0.9	1.5	2.4
test pressure	Sealing test	0.275	0.66	1.1	1.76
Applicable medium		Clear water, rivers and lakes, silt-containing water, etc.
Applicable temperature (℃)		≤80 ℃

Executive standard

Design and manufacture	Flange connection size	Structure length	Pressure test
GB122238	GB / T17241.6	GB12221	GB / T13927

Material of main parts

Part Name	Ingredients	Remarks	Part Name	Ingredients	Remarks
Valve body, butterfly plate, end cover	HT250, QT450-10		Butterfly plate sealing ring	NBR
Valve shaft, cone pin	2Cr13		Bearing	ZCuAl10Fe3
Valve body sealing ring	Special rubber materials		filler	NBR

Dns9/7342X(T) type anti-sand butterfly valve main outline and connection dimensions 　　　　　　　　　　　　　　　　　　　　　　　Unit: mm　　　

PN	DN	L	L1	L2	H	H1	DO	B1	B2	B3	B4	DW
0.25MPa	400	216			1206	376	400	115	483	116	495	140
	450	222			1380	410	400	115	483	116	495	150
	500	229			1431	450	500	145	533	162	610	160
	600	267			1541	525	500	145	533	162	610	170
	700	292			1685	590	500	145	533	162	610	190
	800	318			1862	692	500	175	583	230	683	200
	900	330			2012	760	500	175	583	230	683	210
	1000	410			2110	825	400	225	709	303	770	220
	1200	470	1200	1120	2477	960	400	225	709	303	760	240
	1400	530	1400	1320	2896	1100	400	225	728	303	760	260
	1600	600	1600	1520	3191	1230	400	275	843	385	778	290
	1800	670	1800	1720	3330	1395	400	275	879	385	792	310
	2000	760	2000	1920	4049	1525	400	275	969	450	856	330

PN	DN	L	L1	L2	H	H1	DO	B1	B2	B3	B4	DW
0.6MPa	200	152			859	195	400	115	483	116	495	90
	250	165			996	252	400	115	483	116	495	100
	300	178			1019	285	400	115	483	116	495	110
	350	190			1100	327	400	115	483	116	495	120
	400	216			1206	376	400	115	483	116	495	140
	450	222			1380	410	400	115	483	116	495	150
	500	229			1431	450	500	145	533	162	610	160
	600	267			1541	525	500	145	533	162	610	170
	700	292			1685	590	500	145	533	162	610	190
	800	318			1862	692	500	175	583	230	683	200
	900	330			2012	760	500	175	583	230	683	210
	1000	410			2110	825	400	225	709	303	770	220
	1200	470	1200	1120	2477	960	400	225	709	303	760	240
	1400	530	1400	1320	2896	1100	400	225	728	303	760	260
	1600	600	1600	1520	3191	1230	400	275	843	385	778	290
	1800	670	1800	1720	3330	1395	400	275	879	385	792	310
	2000	760	2000	1920	4049	1525	400	275	969	450	856	330

PN	DN	L	L1	L2	H	H1	DO	B1	B2	B3	B4	DW
1.0MPa	200	152			872	227	400	115	483	116	495	100
	250	165	1200		1016	260	400	115	483	116	495	110
	300	178	1400		1029	292	400	115	483	116	495	120
	350	190	1600		1118	341	400	115	483	116	495	130
	400	216	1800		1226	385	400	115	483	116	495	150
	450	222	2000		1398	425	400	115	483	116	495	160
	500	229			1421	465	500	145	533	162	610	170
	600	267			1571	540	500	145	533	162	610	180
	700	292			1715	627	500	145	533	162	610	200
	800	318			1892	710	500	175	583	230	683	210
	900	330			2032	787	500	175	583	230	683	220
	1000	410			2145	840	400	225	709	303	770	230
	1200	470		1120	2507	985	400	225	709	303	760	250
	1400	530		1320	2936	1115	400	225	728	303	760	270
	1600	600		1520	3231	1260	400	275	843	385	778	300
	1800	670		1720	3380	1410	400	275	879	385	792	320
	2000	760		1920	4099	1540	400	275	969	450	856	350

PN	DN	L	L1	L2	H	H1	DO	B1	B2	B3	B4	DW
1.6MPa	200	152			872	227	400	115	483	116	495	100
	250	165	1200		1016	260	400	115	483	116	495	110
	300	178	1400		1029	292	400	145	533	162	610	120
	350	190	1600		1118	341	400	145	533	162	610	130
	400	216			1226	385	400	145	533	162	683	150
	450	222			1398	425	400	175	583	230	683	160
	500	229			1421	465	500	175	583	230	770	170
	600	267			1571	540	500	225	709	303	760	180
	700	292			1715	627	500	225	709	303	760	200
	800	318			1892	710	500	225	728	303	778	210
	900	330			2032	787	500	275	843	385	792	220
	1000	410			2145	840	400	275	879	385	856	230
	1200	470		1120	2507	985	400	275	969	450	995	250
	1400	530		1320	2936	1115	400	430	1103	540	995	270
	1600	600		1520	3231	1260	400	430	1103	540	995	300

Anti-silt butterfly valve

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