Product Introduction

The hydraulic slow-closing butterfly valve is currently one of the most advanced pipeline control devices available both domestically and internationally. It is primarily installed at the turbine inlet of hydropower stations to function as an inlet valve, or at the pump outlet of various pumping stations in water conservancy, power generation, and water supply/drainage systems, replacing the functions of check valves and gate valves.The hydraulic slow-closing butterfly valves produced by our company feature:Low flow resistance coefficient，High level of intelligence，Comprehensive functionality，Stable and reliable performance.During operation, the valve works in coordination with the pipeline system and host equipment. Based on hydraulic transient principles and a pre-programmed opening/closing sequence, it effectively eliminates water hammer in pipelines, ensures reliable shutoff, and safeguards the pipeline system.

Sales Hotline：

086-189-6973-8119

Product Details

The main features of this product

1. It can replace the original electric gate valve and check valve at the outlet of the water pump, and integrate the mechanical, electrical, and hydraulic systems as a whole, reducing land occupation and infrastructure investment.

2. The electro-hydraulic control function is complete, and it can be used as an independent system for on-site debugging and control without the need for additional configuration; It can also be used as a device unit of a Distributed Control System (DCS), centrally managed by a central computer through I/O channels, and linked with water pumps, turbines, bypass valves, and other pipeline equipment for operation; And it is equipped with manual function, which can also achieve manual opening and closing of valves when there is no power supply, meeting the requirements of valve debugging and control under special working conditions.

3. Good controllability, wide adjustment range, and strong adaptability. The electro-hydraulic control system is equipped with multiple adjustment nodes, which can be set according to different pipeline control requirements for opening and closing programs, ensuring that when the valve opening and closing conditions are met, the valve can automatically open and close at predetermined times, angles, and speeds. And it can effectively eliminate destructive water hammer without electric valve closing, prevent the occurrence of water pump and turbine unit runaway accidents, reduce pressure fluctuations in the pipeline system, and ensure the safe and reliable operation of equipment.

4. The main valve is sealed with a triple eccentric metal seal or a double eccentric rubber seal structure, which is easy to open and close and reliable to seal; And there is an additional increased eccentricity, which gives the valve good self closing and self sealing performance. The design of medium and small diameter butterfly plates is a streamlined flat plate structure, while the design of large diameter butterfly plates is a double flat plate truss structure, with smooth water flow, low valve flow resistance coefficient, and obvious energy-saving effect.

Main Technical Parameters

Product standards			JB/T 5299、GB/T 14478、GB/T 12238、JB/T 8527
Transmission			JB/T 5299 Q/BZZ 09
Face to face			GB/T 12221
Piping flange			Grey cast ironﬂange	GB/T 17241.6
			Ductile ironﬂanges	GB/T 12380.1~12380.3
			Steel flange	GB/T 9124
Accumulator Standard			GB/T 2352
Test and Inspection			GB/T 14478、GB/T 13927
Quality assurance			ISO9001
Nominal diameter(DN)			150~5000mm
Nominal pressure(PN)			0.25~6.4MPa
Test pressure		Sealed	1.1×PN
		Strength	1.5×PN
Work pressure（MPa)			≤1.0×PN
Medium temperature（℃）			≤80℃
Pipeline medium			Clear water, sea water, sediment water, oil, etc.
	Nominal diameter		<1000		≥1000
	Valve opening time		10~60秒（Adjustable）		20~120秒（Adjustable ）
	Valve closing time		Quick close	1.5~15秒（Adjustable）	2.5~30秒（Adjustable）
			Slow off	2.5~60秒（Adjustable）	6~90秒（Adjustable）
	Valve closing angle		Quick close	75°±10°（Adjustable）	75°±10°（Adjustable）
			Slow off	15°±10°（Adjustable）	15°±10°（Adjustable）

Main shape and connection dimensions PN=0.6Mpa

DN	L	D	K	d	C	f	n	d1	d2	L1	L2	L3	L4	H	H1
200	152	320	280	254	22	2	8	18		125	45				175
250	165	375	335	309	24	2	12	22		125	45				175
300	178	440	395	363	24	2	12	22		125	45				175
350	190	490	445	413	24	2	12	22		230	110				175
400	216	540	495	463	24	2	16	22		230	110				175
450	222	595	550	518	24	2	16	22		230	110				175
500	229	645	600	568	26	2	20	22		305	145				250
600	267	755	705	667	26	2	20	26		305	145				250
700	292	860	810	772	26	5	24	26		305	155				285
800	318	975	920	878	26	5	24	30		305	155				285
900	330	1075	1020	978	26	5	24	30	36	345	155	180	300	640	300
1000	410	1175	1120	1078	26	5	28	30	36	345	155	200	360	690	300
1200	470	1405	1340	1295	28	5	32	33	36	430	155	200	360	810	415
1300	530	1520	1450	1405	32	5	32	33	42	430	155	260	400	860	415
1400	530	1630	1560	1510	32	5	36	36	42	430	155	260	400	940	415
1500	600	1730	1660	1610	34	5	36	36	42	480	240	260	400	1000	625
1600	600	1830	1760	1710	34	5	40	36	42	480	240	270	400	1080	625
1750	670	1995	1920	1868	36	5	44	39	42	480	240	300	500	1130	625
1800	670	2045	1970	1918	36	5	44	39	42	480	240	300	500	1130	625
2000	760	2265	2180	2125	38	5	48	42	42	520	320	360	560	1250	830
2200	590	2475	2390	2335	42	6	52	42	42	520	320	300	450	1320	830
2400	650	2685	2600	2545	45	6	56	42	48	520	320	350	500	1440	830

Main shape and connection dimensions PN=1.0Mpa

DN	L	D	K	d	C	f	n	d1	d2	L1	L2	L3	L4	H	H1
200	152	340	295	266	24	2	8	22		230	110				175
250	165	395	350	319	26	2	12	22		230	110				175
300	178	445	400	370	26	2	12	22		230	110				175
350	190	505	460	429	26	2	16	22		230	110				175
400	216	565	515	480	26	2	16	26		230	110				175
450	222	615	565	530	28	2	20	26		305	145				250
500	229	670	620	582	28	2	20	26		305	145				285
600	267	780	725	682	34	2	20	30		305	145				285
700	292	895	840	794	34	5	24	30		305	145				285
800	318	1015	950	901	36	5	24	33		345	155				300
900	330	1115	1050	1001	38	5	28	33	36	345	155	180	300	640	300
1000	410	1230	1160	1112	38	5	28	36	36	430	155	200	360	690	415
1100	410	1340	1270	1222	42	5	28	36	36	430	155	200	360	750	415
1200	470	1455	1380	1328	44	5	32	39	36	430	155	200	360	810	415
1250	470	1505	1430	1378	44	5	32	39	36	430	155	200	360	810	415
1300	530	1575	1490	1425	44	5	32	42	42	430	155	260	400	860	415
1400	530	1675	1590	1530	48	5	36	42	42	480	240	260	400	940	620
1500	600	1785	1700	1640	48	5	36	48	42	480	240	260	400	1000	620
1600	600	1915	1820	1750	52	5	40	48	42	480	240	270	400	1080	620
1750	670	2065	1970	1900	54	5	44	48	42	480	240	300	500	1130	620
1800	670	2115	2020	1950	56	5	44	48	42	480	240	300	500	1130	620
2000	760	2325	2230	2150	60	5	48	48	42	520	320	360	560	1250	830
2200	590	2550	2440	2370	60	6	52	56	42	520	320	300	450	1320	830

Main shape and connection dimensions PN=1.6Mpa

DN	L	D	K	d	C	f	n	d1	d2	L1	L2	L3	L4	H	H1
200	152	340	295	266	24	2	12	22		230	110				175
250	165	405	355	319	26	2	12	26		230	110				175
300	178	460	410	370	28	2	12	26		230	110				175
350	190	520	470	429	30	2	16	26		230	110				175
400	216	580	525	480	32	2	16	30		230	110				175
450	222	640	585	548	34	2	20	30		305	145				250
500	229	715	650	609	38	2	20	33		305	145	150	220	400	250
600	267	840	770	720	38	2	20	36	32	305	145	150	220	460	285
700	292	910	840	794	40	5	24	36	32	345	155	180	300	520	300
800	318	1025	950	901	42	5	24	39	32	345	155	180	300	580	300
900	330	1125	1050	1001	44	5	28	39	36	430	155	180	300	640	415
1000	410	1255	1170	1112	46	5	28	42	36	430	155	200	360	690	415
1100	410	1370	1280	1222	46	5	28	42	36	430	155	200	360	750	415
1200	470	1485	1390	1328	52	5	32	48	36	480	240	200	360	810	625
1250	470	1535	1440	1378	52	5	32	48	36	480	240	200	360	810	625
1300	530	1585	1490	1425	54	5	32	48	42	480	240	260	400	860	625
1400	530	1685	1590	1530	58	5	36	48	42	480	240	260	400	940	630
1500	600	1820	1710	1640	60	5	36	48	42	520	320	260	400	1000	630
1600	600	1930	1820	1750	64	5	40	55	42	520	320	270	400	1080	630
1750	670	2080	1970	1900	66	5	44	55	42	520	320	300	500	1130	630
1800	670	2130	2020	1950	68	5	44	55	42	520	320	300	500	1130	630
2000	760	2345	2230	2150	70	5	48	60	42	520	320	360	560	1250	630

Main shape and connection dimensions PN=2..5Mpa

DN	L	D	K	d	C	f	n	d1	d2	L1	L2	L3	L4	H	H1
200	152	360	310	274	30	2	12	26		230	110				175
250	165	420	370	330	32	2	12	30		230	110				175
300	178	485	430	389	34	2	16	30		230	110				175
350	190	555	490	448	38	2	16	33		230	110				175
400	216	620	550	503	40	2	16	36		230	110				175
450	222	670	600	548	46	2	20	36	32	305	145				250
500	229	730	660	609	48	2	20	36	32	305	145	150	220	400	250
600	267	845	770	720	50	2	20	39	32	305	145	150	220	460	285
700	292	960	875	820	50	5	24	42	32	345	155	180	300	520	300
800	318	1085	990	928	54	5	24	48	32	345	155	180	300	580	300
900	330	1185	1090	1028	58	5	28	48	36	430	155	180	300	640	415
1000	410	1320	1210	1140	58	5	28	55	36	430	155	200	360	690	415
1100	410	1425	1315	1245	60	5	28	55	36	430	155	200	360	750	415
1200	470	1530	1420	1350	62	5	32	55	36	480	240	200	360	810	625
1250	470	1575	1470	1400	62	5	32	55	36	480	240	200	360	810	625
1300	530	1640	1530	1450	70	5	32	60	42	480	240	260	400	860	625
1400	530	1755	1640	1560	76	5	36	60	42	480	240	260	400	940	630
1500	600	1865	1750	1670	80	5	36	60	42	520	320	260	400	1000	630
1600	600	1975	1860	1780	84	5	40	60	42	520	320	270	400	1080	630

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