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
		1.1×PN
		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	10~60s（ Adjustable）		20~120s（Adjustable ）
	Valve closing time	Quick close	1.5~15s（Adjustable）	2.5~30s（Adjustable）
		Slow off	2.5~60s（Adjustable）	6~90s（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	d3	L1	L2	L3	L4	L5
200	152	320	280	254	22	2	8	18	24	24	800	820	100	150	120
250	165	375	335	309	24	2	12	22	24	24	800	820	100	150	120
300	178	440	395	363	24	2	12	22	30	24	800	820	100	150	120
350	190	490	445	413	24	2	12	22	30	24	800	820	100	150	120
400	216	540	495	463	24	2	16	22	30	24	1000	820	120	180	120
450	222	595	550	518	24	2	16	22	32	24	1000	820	150	220	120
500	229	645	600	568	26	2	20	22	32	24	1000	820	150	220	120
600	267	755	705	667	26	2	20	26	32	24	1200	820	150	220	120
700	292	860	810	772	26	5	24	26	32	24	1200	820	180	300	120
800	318	975	920	878	26	5	24	30	32	24	1400	920	180	300	160
900	330	1075	1020	978	26	5	24	30	36	24	1400	920	180	300	160
1000	410	1175	1120	1078	26	5	28	30	36	24	1600	920	200	360	160
1100	410	1275	1220	1178	26	5	28	30	36	24	1600	920	200	360	160
1200	470	1405	1340	1295	28	5	32	33	36	24	1600	1030	200	360	160
1250	470	1455	1390	1345	30	5	32	33	36	28	1600	920	200	360	160
1300	530	1520	1450	1405	32	5	32	33	42	28	1800	1030	260	400	160
1400	530	1630	1560	1510	32	5	36	36	42	28	1800	1030	260	400	160
1500	600	1730	1660	1610	34	5	36	36	42	28	1800	1030	260	400	160
1600	600	1830	1760	1710	34	5	40	36	42	28	2100	1150	270	400	160
1750	670	1995	1920	1868	36	5	44	39	42	28	2100	1150	300	500	160
1800	670	2045	1970	1918	36	5	44	39	42	28	2100	1150	300	500	160
2000	760	2265	2180	2125	38	5	48	42	42	32	2300	750	360	560	200
2200	590	2475	2390	2335	42	6	52	42	42	32	2300	750	300	450	200
2400	650	2685	2600	2545	45	6	56	42	48	32	2400	770	350	500	200
2600	700	2905	2810	2750	46	6	60	48	48	32	2400	920	400	550	200
2800	760	3115	3020	2960	48	6	64	48	48	32	2400	920	500	650	200
3000	810	3315	3220	3160	50	6	68	48	48	32	2500	960	550	700	200
3200	870	3525	3430	3370	54	6	72	48	48	32	2500	960	600	750	200

Main shape and connection dimensions PN=1.0Mpa

DN	L	D	K	d	C	f	n	d1	d2	d3	L1	L2	L3	L4	L5
200	152	340	295	266	24	2	8	22	24	24	800	820	100	150	120
250	165	395	350	319	26	2	12	22	24	24	800	820	100	150	120
300	178	445	400	370	26	2	12	22	30	24	800	820	100	150	120
350	190	505	460	429	26	2	16	22	30	24	1000	820	100	150	120
400	216	565	515	480	26	2	16	26	30	24	1000	820	120	180	120
450	222	615	565	530	28	2	20	26	32	24	1000	820	150	220	120
500	229	670	620	582	28	2	20	26	32	24	1200	820	150	220	120
600	267	780	725	682	34	2	20	30	32	24	1200	820	150	220	120
700	292	895	840	794	34	5	24	30	32	24	1400	920	180	300	160
800	318	1015	950	901	36	5	24	33	32	24	1400	920	180	300	160
900	330	1115	1050	1001	38	5	28	33	36	24	1600	920	180	300	160
1000	410	1230	1160	1112	38	5	28	36	36	24	1600	920	200	360	160
1100	410	1340	1270	1222	42	5	28	36	36	28	1600	1030	200	360	160
1200	470	1455	1380	1328	44	5	32	39	36	28	1600	1030	200	360	160
1250	470	1505	1430	1378	44	5	32	39	36	28	1600	1030	200	360	160
1300	530	1575	1490	1425	44	5	32	42	42	28	1800	1030	260	400	160
1400	530	1675	1590	1530	48	5	36	42	42	28	1800	1030	260	400	160
1500	600	1785	1700	1640	48	5	36	48	42	28	2100	1150	260	400	160
1600	600	1915	1820	1750	52	5	40	48	42	28	2100	1150	270	400	160
1750	670	2065	1970	1900	54	5	44	48	42	28	2100	1150	300	500	160
1800	670	2115	2020	1950	56	5	44	48	42	28	2100	1150	300	500	160
2000	760	2325	2230	2150	60	5	48	48	42	32	2300	750	360	560	200
2200	590	2550	2440	2370	60	6	52	56	42	32	2300	770	300	450	200
2250	590	2600	2490	2420	60	6	52	56	42	32	2300	770	300	450	200
2400	650	2760	2650	2570	64	6	56	56	48	32	2400	920	350	500	200
2600	700	2960	2850	2780	66	6	60	56	48	32	2400	920	400	550	200
2800	760	3180	3070	3000	68	6	64	56	48	32	2500	960	500	650	200
3000	810	3405	3290	3210	72	6	68	62	48	32	2500	960	550	700	200

Main shape and connection dimensions PN=1.6Mpa

DN	L	D	K	d	C	f	n	d1	d2	d3	L1	L2	L3	L4	L5
200	152	340	295	266	24	2	12	22	24	24	800	820	100	150	120
250	165	405	355	319	26	2	12	26	24	24	800	820	100	150	120
300	178	460	410	370	28	2	12	26	30	24	1000	820	100	150	120
350	190	520	470	429	30	2	16	26	30	24	1000	820	100	150	120
400	216	580	525	480	32	2	16	30	30	24	1000	820	120	180	120
450	222	640	585	548	34	2	20	30	32	24	1200	820	150	220	120
500	229	715	650	609	38	2	20	33	32	24	1200	820	150	220	120
600	267	840	770	720	38	2	20	36	32	24	1400	920	150	220	160
700	292	910	840	794	40	5	24	36	32	24	1400	920	180	300	160
800	318	1025	950	901	42	5	24	39	32	24	1400	920	180	300	160
900	330	1125	1050	1001	44	5	28	39	36	24	1600	920	180	300	160
1000	410	1255	1170	1112	46	5	28	42	36	28	1600	1030	200	360	160
1100	410	1370	1280	1222	46	5	28	42	36	28	1600	1030	200	360	160
1200	470	1485	1390	1328	52	5	32	48	36	28	1800	1030	200	360	160
1250	470	1535	1440	1378	52	5	32	48	36	28	1800	1030	200	360	160
1300	530	1585	1490	1425	54	5	32	48	42	28	1800	1030	260	400	160
1400	530	1685	1590	1530	58	5	36	48	42	28	2100	1150	260	400	160
1500	600	1820	1710	1640	60	5	36	48	42	28	2100	1150	260	400	160
1600	600	1930	1820	1750	64	5	40	55	42	28	2100	1150	270	400	160
1750	670	2080	1970	1900	66	5	44	55	42	32	2300	750	300	500	200
1800	670	2130	2020	1950	68	5	44	55	42	32	2300	750	300	500	200
2000	760	2345	2230	2150	70	5	48	60	42	32	2300	770	360	560	200
2200	590	2555	2440	2370	72	6	52	62	42	32	2300	770	300	450	200
2250	590	2605	2490	2420	70	6	52	62	42	32	2300	770	300	450	200
2300	650	2635	2540	2460	75	6	52	62	48	32	2400	920	350	500	200

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