Electro Hydraulic Butterfly Valve

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Electro Hydraulic Butterfly Valve

Size Range: DN50-DN2000

Working Pressure: 0.25MPa~2.5Mpa

Working Temperature:-29°C to 200°C

Sealing Options: EPDM, PTFE, Metal-to-Metal, NBR, FKM

Material: Gray iron, ductile iron, carbon steel

Applicable Medium:Water, Oil, Gas, Air, Chemical Fluids

Pressure Test: GB/T 13927-1992

Product Overview

The Electro-Hydraulic Butterfly Valve is a high-performance flow control device designed for automated on/off or throttling service in large-diameter pipelines. It integrates an electric actuator with a hydraulic control system to provide precise, powerful, and reliable operation, even under high-pressure conditions.

Product Features

Electro hydraulic vutterfly valve is an improved and optimized product based on advanced foreign technology. It is designed to achieve pump-valve interlocking according to preset procedures, enabling remote automatic opening, closing, and pressure-holding without counterweight drop. The disc operates without vibration and offers minimal flow resistance.

The valve features a two-stage adjustable closing mechanism—fast and slow—particularly critical in scenarios involving sudden power outages or emergency pump shutdowns. In such events, the stored potential energy of the permanent counterweight automatically initiates a controlled two-phase closure (fast-close followed by slow-close), effectively preventing water hammer and safeguarding pumps and pipeline systems.

This valve is widely used in medium to large-scale pipeline pumping stations across water treatment plants, power stations, metallurgy, and drainage projects.

Specification Parameters

◆ Standards Adopted

Flange Size:
Gray cast iron flange: GB/T 17241.6-1998
Ductile iron flange: GB/T 17241.6-1998
Steel flange: GB/T 9113.1
Structure Length: GB/T 12221-1989
Pressure Test: GB/T 13927-1992

◆ Main Components Material

Name	Material
Body	Gray iron, ductile iron, carbon steel
Disc	Gray iron, ductile iron, carbon steel
Valve Shaft	Carbon steel (with surface anti-corrosion treatment), stainless steel
Body Seal	Stainless steel, copper alloy
Disc Ring Seal	Quality rubber

◆ Main Technical Parameters

Nominal Diameter DN (mm)	Nominal Pressure PN (MPa)	Test Pressure (MPa)	Applicable Temperature (°C)	Applicable Medium
		Shell	Seal
300–1000	2.5	3.75	2.75	≤ 80°C
300–1800	1.6	2.4	1.76	≤ 80°C
300–2000	1.0	1.5	1.1	≤ 80°C
1200–2000	0.6	0.9	0.66	≤ 80°C
2000–3400	0.25	0.375	0.275	≤ 80°C

◆ Main External Dimensions – KD741X-V Automatic Pressure-Retaining Hydraulic Control Butterfly Valve

■ For PN = 0.25 MPa

DN (mm)	D	D1	L1	L2	E	E1	E2	H	Z–φd	Motor Power (kW)	Foot Bolt 4–Md
2000	2190	2130	1130	360	1882	1370	3630	1165	48–30	5.5	4–36
2200	2405	2340	930	400	1960	1560	3955	1240	52–33	5.5	4–39
2400	2605	2540	930	450	2060	1760	4155	1340	56–33	7.5	4–39
2600	2805	2740	1000	500	2160	1960	4355	1540	60–33	7.5	4–39
2800	3030	2960	1000	550	2260	2160	4555	1640	64–36	7.5	4–39
3000	3230	3160	1000	600	2360	2360	4755	1140	68–36	7.5	4–42
3200	3430	3360	1000	650	2460	2580	7955	1840	72–36	7.5	4–42
3400	3630	3560	1000	700	2560	2760	5155	1940	76–36	7.5	4–42

■ For PN = 0.6 MPa

DN (mm)	D	D1	L1	L2	E	E1	E2	H	Z–φd	Motor Power (kW)	Foot Bolt 4–Md
1200	1405	1340	970	260	1450	790	2600	710	32–33	5.5	4–36
1300	1520	1450	1010	260	1450	820	2700	740	32–36	5.5	4–36
1400	1630	1560	1010	260	1450	840	2800	835	32–36	5.5	4–36
1500	1730	1660	1050	260	1450	960	3000	935	36–36	5.5	4–36
1600	1830	1760	1050	260	1450	960	3140	935	36–36	5.5	4–36
1800	2045	1970	1090	270	1890	1370	3500	1040	44–39	5.5	4–39
2000	2265	2180	1160	360	1890	1370	3750	1130	48–42	7.5	4–42
2200	2475	2390	/	/	/	/	/	/	52–42	/	4–42
2400	2685	2600	/	/	/	/	/	/	56–42	/	4–42

■ For PN = 1.0 MPa

DN (mm)	D	D1	L1	L2	E	E1	E2	H	Z–φd	Motor Power (kW)	Foot Bolt 4–Md
300	445	400	710	100	910	320	549	330	12–22	2.2	4–22
350	505	460	720	120	910	320	574	330	16–22	2.2	4–22
400	565	515	730	120	910	420	607	375	16–26	2.2	4–27
500	670	620	820	140	1135	600	758	440	20–26	2.2	4–27
600	780	725	850	150	1230	430	857	460	20–30	2.2	4–30
700	895	840	870	180	1230	570	930	520	24–30	2.2	4–30
800	1015	950	890	180	1230	610	988	530	24–33	2.2	4–30
900	1115	1050	910	180	1280	700	1354	585	28–36	5.5	4–35
1000	1230	1160	920	200	1350	740	1464	620	28–36	5.5	4–35
1100	1455	1380	920	260	1450	790	710	32–39	5.5	4–39
1300	1575	1490	1010	260	1730	820	1493	900	32–42	5.5	4–36
1400	1675	1590	1010	260	1885	840	865	925	36–42	5.5	4–36
1500	1785	1705	1020	260	1885	900	1857	925	36–45	5.5	4–36
1600	1885	1820	1080	270	1890	960	1995	980	40–45	5.5	4–45
1800	2115	2020	1140	440	1890	1370	1110	1040	48–48	7.5	4–45
2000	2325	2230	1160	460	1400	/	/	/	48–48	/	4–45

■ For PN = 1.6 MPa

DN (mm)	D	D1	L1	L2	E	E1	E2	H	Z–φd	Motor Power (kW)	Foot Bolt 4–Md
300	460	410	710	100	910	384	1040	330	12–36	2.2	4–22
350	520	470	720	100	910	384	1100	345	16–26	2.2	4–22
400	580	525	730	120	1010	484	1160	370	16–30	2.2	4–22
500	715	650	820	140	1230	670	1530	440	20–33	2.2	4–27
600	820	720	850	150	1240	690	1680	490	20–36	5.5	4–30
700	910	840	870	180	1240	690	1750	520	24–36	5.5	4–30
800	1025	950	890	180	1450	75	2150	550	24–39	5.5	4–36
900	1125	1050	910	180	1450	800	2250	600	28–39	5.5	4–30
1000	1255	1170	920	200	1450	830	2470	640	28–42	5.5	4–30
1200	1485	1390	970	260	1450	945	2660	760	32–48	5.5	4–42
1300	1585	1490	1010	360	1450	980	2750	845	32–48	5.5	4–48
1400	1685	1590	1010	360	1450	980	2870	890	36–48	5.5	4–48
1500	1820	1710	1080	360	1890	1370	3140	945	36–56	7.5	4–48
1600	1930	1820	/	/	/	/	/	/	50–56	/	/
1800	2130	2020	/	/	/	/	/	/	44–56	/	/

■ For PN = 2.5 MPa

DN (mm)	D	D1	L1	L2	E	E1	E2	H	Z–φd	Motor Power (kW)	Foot Bolt 4–Md
300	485	430	790	100	590	320	1085	330	16–30	2.2	4–22
350	555	490	800	120	1020	320	1150	360	16–33	2.2	4–30
400	620	550	820	120	1020	420	1345	360	16–36	2.2	4–30
500	730	660	840	140	1230	600	1590	430	20–36	5.5	4–30
600	820	770	860	150	1230	430	1700	490	20–39	5.5	4–30
700	960	875	880	180	1450	570	1780	520	24–42	7.5	4–36
800	1085	990	900	180	1450	650	1525	550	24–48	7.5	4–36
900	1185	1090	820	/	/	/	/	/	28–48	/	/
1000	1320	1210	820	/	/	/	/	/	28–56	/	/

Specification Applications

Industries

Water Treatment Plants: Used in water distribution and control systems for potable and wastewater treatment.
Oil & Gas Industry: Suitable for regulating the flow of crude oil, natural gas, and refined products.
Chemical Industry: Ideal for controlling the flow of chemicals, acids, and other aggressive fluids.
HVAC Systems: Commonly used in heating, ventilation, and air conditioning systems for regulating air or water flow.
Food & Beverage Industry: Suitable for sanitary and non-sanitary applications that require frequent operation and cleaning, thanks to corrosion-resistant materials and ease of cleaning.

Specific Applications

Cooling Water Systems: Controls the flow of water for cooling applications in industrial facilities.
Fire Protection Systems: Used in fire sprinkler systems as control valves to regulate water supply.
Process Pipelines: Ideal for modulating or isolating flow in pipelines carrying oil, gas, or chemicals.
Air Flow Regulation: Used in HVAC systems to regulate air flow, ensuring efficient operation of heating and cooling units.

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

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