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 external dimensions of accumulator-type hydraulic butterfly valve (linkage transmission) PN=0.6Mpa

DN	L	D	K	d	C	f	n	d1	d2	L1	L2	L3	L4	H	H1
1000	410	1176	1120	1078	26	5	28	30	36	345	820	200	360	690	300
1200	470	1405	1340	1295	28	5	32	33	36	430	820	200	360	810	415
1300	530	1520	1450	1405	32	5	32	33	42	430	940	260	400	860	415
1400	530	1630	1560	1510	32	5	36	36	42	430	940	260	400	940	415
1500	600	1730	1660	1610	34	5	36	36	42	480	940	260	400	1000	625
1600	600	1830	1760	1710	34	5	40	36	42	480	940	270	400	1080	625
1750	670	1995	1920	1868	36	5	44	39	42	480	1050	300	500	1130	625
1800	670	2045	1970	1918	36	5	44	39	42	480	1050	300	500	1130	625
2000	760	2265	2180	2125	38	5	48	42	42	520	1130	360	560	1250	830
2200	590	2475	2390	2335	42	6	52	42	42	520	1130	300	450	1320	830
2400	650	2685	2600	2545	45	6	56	42	48	520	1350	350	500	1440	830
2600	700	2905	2810	2750	46	6	60	48	48	600	1350	400	550	1520	960
2800	760	3115	3020	2960	48	6	64	48	48	600	1350	500	650	1620	960
3000	810	3315	3220	3160	50	6	68	48	48	650	1420	550	700	1720	1000
3200	870	3525	3430	3370	54	6	72	48	48	650	1420	600	750	1820	1000
3400	920	3735	3640	3580	56	6	76	48	48	700	1540	650	800	1920	1000
3500	920	3840	3745	3685	58	6	80	48	48	700	1540	650	800	1980	1200
3600	970	3970	3860	3790	62	6	80	56	48	700	1540	700	850	2050	1200
3800	1020	4180	4065	3990	66	6	80	62	48	800	1750	750	900	2150	1400
4000	1070	4380	4265	4190	70	6	84	62	48	800	1750	800	950	2250	1400

Main external dimensions of accumulator-type hydraulic butterfly valve (linkage transmission) PN=1.0Mpa

DN	L	D	K	d	C	f	n	d1	d2	L1	L2	L3	L4	H	H1	H2
1000	410	1230	1160	1112	38	5	28	36	36	430	920	200	360	690	415	835
1100	410	1340	1270	1222	42	5	28	36	36	430	920	200	360	750	415	835
1200	470	1455	1380	1328	44	5	32	39	36	430	920	200	360	810	415	835
1250	470	1505	1430	1378	44	5	32	39	36	430	920	200	360	810	415	835
1300	530	1575	1490	1425	44	5	32	42	42	430	920	260	400	860	415	835
1400	530	1675	1590	1530	48	5	36	42	42	480	1050	260	400	940	620	930
1500	600	1785	1700	1640	48	5	36	48	42	480	1050	260	400	1000	620	930
1600	600	1915	1820	1750	52	5	40	48	42	480	1050	270	400	1080	620	930
1750	670	2065	1970	1900	54	5	44	48	42	480	1050	300	500	1130	620	930
1800	670	2115	2020	1950	56	5	44	48	42	480	1050	300	500	1130	620	930
2000	760	2325	2230	2150	60	5	48	48	42	520	1130	360	560	1250	830	1275
2200	590	2550	2440	2370	60	6	52	56	42	520	1130	300	450	1320	830	1275
2250	590	2600	2490	2420	60	6	52	56	42	520	1130	300	450	1320	910	2275
2400	650	2760	2650	2570	64	6	56	56	48	520	1130	350	500	1440	960	2370
2600	700	2960	2850	2780	66	6	60	56	48	520	1220	400	550	1520	960	2370
2800	760	3180	3070	3000	68	6	64	56	48	600	1220	500	650	1620	1000	2370
3000	810	3405	3290	3210	72	6	68	62	48	600	1220	550	700	1720	1000	2470
3200	870	3655	3540	3460	82	6	72	62	48	650	1220	600	750	1820	1000	2470

Main external dimensions of accumulator-type hydraulic butterfly valve (linkage transmission) PN=1.6Mpa

DN	L	D	K	d	C	f	n	d1	d2	L1	L2	L3	L4	H	H1	H2
1100	410	1425	1315	1245	60	5	28	55	36	430	920	200	360	750	415	835
1200	470	1530	1420	1350	62	5	32	55	36	480	920	200	360	810	625	925
1250	470	1575	1470	1400	62	5	32	55	36	480	920	200	360	810	625	925
1300	530	1640	1530	1450	70	5	32	60	42	480	920	260	400	860	625	925
1400	530	1755	1640	1560	76	5	36	60	42	480	1030	260	400	940	630	1270
1500	600	1865	1750	1670	80	5	36	60	42	520	1030	260	400	1000	630	1270
1600	600	1975	1860	1780	84	5	40	60	42	520	1030	270	400	1080	630	1270
1750	670	2145	2020	1935	90	5	44	68	42	520	1150	300	500	1130	910	2070
1800	670	2195	2070	1985	90	5	44	68	42	600	1150	300	500	1130	910	2070
2000	760	2425	2300	2210	96	5	48	68	42	600	1240	360	560	1250	910	2275
2200	590	2660	2520	2430	106	6	52	72	42	600	1240	300	450	1320	960	2275

Main external dimensions of accumulator-type hydraulic butterfly valve (linkage transmission) PN=2.5Mpa

DN	L	D	K	d	C	f	n	d1	d2	L1	L2	L3	L4	H	H1	H2
1000	410	1255	1170	1112	46	5	28	42	36	430	920	200	360	690	415	835
1100	410	1370	1280	1222	46	5	28	42	36	430	920	200	360	750	415	835
1200	470	1485	1390	1328	52	5	32	48	36	480	920	200	360	810	625	925
1250	470	1535	1440	1378	52	5	32	48	36	480	920	200	360	810	625	925
1300	530	1585	1490	1425	54	5	32	48	42	480	940	260	400	860	625	925
1400	530	1685	1590	1530	58	5	36	48	42	480	940	260	400	940	630	1270
1500	600	1820	1710	1640	60	5	36	48	42	520	940	260	400	1000	630	1270
1600	600	1930	1820	1750	64	5	40	55	42	520	940	270	400	1080	630	1270
1750	670	2080	1970	1900	66	5	44	55	42	520	1050	300	500	1130	630	1270
1800	670	2130	2020	1950	68	5	44	55	42	520	1050	300	500	1130	630	1270
2000	760	2345	2230	2150	70	5	48	60	42	520	1130	360	560	1250	630	1275
2250	590	2605	2490	2420	70	6	52	62	42	600	1130	300	450	1320	910	2275
2300	650	2635	2540	2460	75	6	52	62	48	600	1130	350	500	1370	960	2370

Main external dimensions of accumulator-type hydraulic butterfly valve (linkage transmission) PN=4.0Mpa

DN	L	D	K	d	C	f	n	d1	d2	L1	L2	L3	L4	H	H1	H2
1000	550	1360	1250	1180	78	5	28	56	36	430	920	200	360	690	415	835
1100	550	1470	1360	1290	80	5	28	56	36	430	920	200	360	750	415	835
1200	630	1570	1460	1380	84	5	32	62	36	480	920	200	360	810	625	925
1250	630	1600	1490	1410	84	5	32	62	36	480	920	200	360	810	625	925
1300	630	1685	1575	1495	86	5	32	62	42	480	1030	260	400	860	625	925
1400	530	1795	1680	1600	88	5	36	62	42	520	1030	260	400	940	910	1770
1500	530	1905	1790	1710	60	5	36	62	42	520	1030	260	400	1000	910	1770
1600	600	2025	1900	1815	98	5	40	70	42	520	1150	270	400	1080	910	2070
1750	670	2215	2070	1985	108	5	44	72	42	600	1150	300	500	1130	910	2070
1800	670	2260	2105	2020	118	5	44	72	42	600	1150	300	500	1130	910	2070
2000	760	2460	2305	2220	128	5	48	72	42	600	1240	360	560	1250	910	2275

Related products

Gravity-assisted hydrau…

Accumulator-type hydrau…