Butterfly Valve Series

• Cast Iron Butterfly Valves
• Ductile Iron Butterfly Valves
• Stainless Steel Butterfly Valves
• Triple Offset Butterfly Valves
• AWWA C504 Butterfly Valves
• Large Diameter Butterfly Valves
• Sanitary Butterfly Valves
• Flanged Butterfly Valves
• Lug Butterfly Valves
• Wafer Butterfly Valves
• High Vacuum Butterfly Valves

Product drawing»

Structural drawing»

Anti-sediment Butterfly Valve

The introduction and features

The design idea of Dns9/7/342X (T) anti-sediment butterfly valve comes from Ningxia "Yellow River Diversion Project," focusing on the characteristics of large sediment content of Yellow River (maximum content is 80kg/m3, the annual average sediment is 4.133kg/m3). Based on the past experience and lessons, the new generation of anti-sediment butterfly valve has been developed after repeated tests and improvements. Today, many cities have serious water shortages, and the water diversion projects have been launched, while the rivers and lakes contain sediment, the general valve is corroded by the impact of sediment in the water pipes, and the sealing face will be badly damaged in a very short time (2 ~ 6 months) and can not work properly. Dns9/7/342X (T) anti-sediment butterfly valve makes great improvements from the structural design, material selection, manufacturing processes and other aspects, compare with the general butterfly valve, so that it can adapt to harsh working conditions. Dns9/7/342X (T) anti-sediment butterfly valve is mainly used in pipes for drinking water, to achieving regulate flow, check and globe sealing effect. If the valve equipped with hydraulic actuator, it can be installed in the pump loutlet of drinking water pipeline, used as the best hydraulic control check butterfly valve. The main features are: 1, streamlined body cavity structural design not only reduces the flow resistance, but also reduces the abrasion of body wall impacted by the sand. 2, new design ideas, the seat ring uses specially formulated rubber material, with a high impact-resistant of sand abrasion, changes using new wear-resistant metal material in the past, and increasing the costs of manufacture costs, but the effects is not ideal situation fundamentally. 3, the anti-sediment structure which is inspected through experience, has effectively protected the shaft, bearings, packing and other components from sand erosion. 4, the new sleeve structural design not only guarantee the performance not decrease, but also reduces manufacturing costs substantially. The external dimension is smaller, and machine is lighter. 5, sleeve structural with lubricated design, greatly reduces the running torque, and the open and close is more flexible labor-saving. 6, a multi-purpose valves, coupled with different drives, it can be realized in different functions: coupled with manual or electrical devices, it can be used to regulate flow, pressure, or cut-off sealing; coupled with hydraulic drive device, it can be installed in the pump outlet, used as check and eliminate water hammer. 7, it can be installed horizontally, or vertically.

Dimensions & constructral diagram

The materials of main parts

part name	materials	remarks	part name	materials	remarks
body,disc,gland	HT250、QT450-10		disc sealing ring	NBR
shaft,pin	2Cr13		bearing	2CuA110Fe3	with lubrication structure
body sealing ring	special rubber materials		packing	NBR

Main technical parameter and standard

nominal pressure（MPa）		0.25	0.6	1.0	1.6
nominal diameter （mm）		400～2000	400～2000	200～2000	200～2000
test pressure （MPa）	intensity test	0.375	0.9	1.5	2.4
	sealing test	0.275	0.66	1.1	1.76
applicable medium		water,rivers and lakes,water with sediment,etc
suitable temperature		≤80℃
design and manufacture：GB12238， flange connection dimensions：GB/T 17241.6， face to face dimensions：GB12221， pressure test：GB/T 13927

The main external and connection dimensions of Dns9/7/342X（T）

PN	DN	L	L1	L2	H	H1	D0	B1	B2	B3	B4	DW
0.25	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	1400	2896	1100	400	225	728	303	760	260
	1600	600	1600	1600	3191	1230	400	275	843	385	778	290
	1800	670	1800	1800	3330	1395	400	275	879	385	792	310
	2000	760	2000	2000	4049	1525	400	275	969	450	856	330

The main external and connection dimensions of Dns9/7/342X（T）

PN	DN	L	L1	L2	H	H1	D0	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	500	145	533	162	610	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	175	583	230	683	190
	800	318			1862	692	500	175	583	230	683	200
	900	330			2012	760	400	225	709	303	770	210
	1000	410			2110	825	400	225	709	303	760	220
	1200	470	1200	1120	2477	960	400	225	728	303	760	240
	1400	530	1400	1320	2896	1100	400	275	843	385	778	260
	1600	600	1600	1520	3191	1230	400	275	879	385	792	290
	1800	670	1800	1720	3330	1395	400	275	969	450	856	310
	2000	760	2000	1920	4049	1525	400	430	1103	540	995	330
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	500	145	533	162	610	150
	450	222	2000		1395	425	500	145	533	162	610	160
	500	229			1421	465	500	145	533	162	610	170
	600	267			1571	540	500	175	583	230	683	180
	700	292			1715	627	500	175	583	230	683	200
	800	318			1892	710	400	225	709	303	770	210
	900	330			2032	787	400	225	709	303	760	220
	1000	410			2145	840	400	225	728	303	760	230
	1200	470		1120	2507	985	400	275	843	385	778	250
	1400	530		1320	2939	1115	400	275	879	385	792	270
	1600	600		1520	3231	1260	400	275	969	450	856	300
	1800	670		1720	3380	1410	400	430	1103	540	995	320
	2000	760		1920	4099	1540	400	430	1103	540	995	350
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	500	145	533	162	610	120
	350	190	1600		1118	341	500	145	533	162	610	130
	400	216			1226	385	500	145	533	162	610	150
	450	222			1398	425	500	175	583	230	683	160
	500	229			1421	465	500	175	583	230	683	170
	600	267			1571	540	400	225	709	303	770	180
	700	292			1715	627	400	225	709	303	760	200
	800	318			1892	710	400	225	728	303	760	210
	900	330			2032	787	400	275	843	385	778	220
	1000	410			2145	840	400	275	879	385	792	230
	1200	470		1120	2507	985	400	275	969	450	856	250
	1400	530		1320	2936	1115	400	430	1103	540	995	270
	1600	600		1520	3231	1260	400	430	1103	540	995	300

Note: it can produce DN250-3000(GB12221-89) long series according to customers’ requirements,from DN1200-3000 with bottom foot must be marked.

MeiYan Yi butterfly valve Contact MeiYan Yi Enine butterfly valve Contact Enine Saitai butterfly valve Contact Saitai FengQi butterfly valve Contact FengQi