Electro Hydraulic Linkage Butterfly Valve

Carbon Steel (WCB, WCC for strength), Stainless Steel (SS304, SS316 for corrosion resistance)

Size Range:DN50-DN4000

Connection Options:Flanged

Working Pressure:Up to 300 psi (20.7 bar)

Working Temperature:-29°C to 200°C

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

Manufacturing Standard:GB / T 12238-2008

Product Overview

The Electro Hydraulic Linkage Butterfly Valve is an advanced flow control device designed for precision regulation in high-demand applications. Combining electrical and hydraulic systems, it offers enhanced control and stability, making it ideal for automated operations in industries such as oil & gas, power plants, and water treatment. The electro-hydraulic linkage mechanism ensures swift, reliable actuation with minimal manual intervention, even in high-pressure environments. This butterfly valve is known for its durability, smooth operation, and efficient performance, providing precise flow control for critical processes.

Product Features

The Electro-Hydraulic Locking Butterfly Valve is designed with a hydraulic-driven opening mechanism and a gravity-assisted closing system. Once installed, it can function as both a gate (or butterfly) valve and a check valve, featuring minimal flow resistance. The closing process is split into two phases: an initial rapid close followed by a slower, controlled close. Both timing and angles for these stages can be adjusted to suit user requirements. The pressure-based hydraulic system ensures automatic pressure retention and reset, equipped with dual locking for added security. The accumulator version opens using a pump and closes through the accumulator, eliminating the need for counterweights, which allows for a more compact and space-efficient design. Electrical control options include standard or PLC controls, enabling local, remote, or computer-based operation with linkage functionality.

Specification Parameters

Structural Length Standard:
GB / T 12221-2005

Connection Forms Standards:
GB / T 9113

Available Sizes (Caliber):
DN50-DN4000

Pressure-Temperature Rating:
Class 150, 300 as per API 609 and ASME B16.47

Pressure Range:
Up to 300 psi depending on size and material

Temperature Range:
-29°C to 200°C depending on material and sealing options

Main performance specifications

Nominal diameter	DN（mm）	50-4000
Nominal pressure	PN（MPa)	1.0	1.6	2.5
test pressure	Strength test	1.5	2.4	3.75
	Seal test	1.1	1.76	2.75
	Gas seal test	0.6	0.6	0.6

Product Parts Materials

Model		D743H-16	D743W-16P	D743W-16R
Work pressure（MPa）		1.6
proper temperature（℃）		≤425	≤200
Suitable media		Water, oil or non-corrosive media	Nitric acid medium	Acetic acid medium
Material	Body, disc	WCB	CF8/304	CF3M/316L
	Valve stem	2Cr13	304	316L
	Body sealing surface	Surfacing507	－	－
	Butterfly sealing surface	304＋flexible graphite	304＋PTFE	304＋PTFE
	Filler	Flexible graphite	PTFE	PTFE

The main shape and connection size

PN	DN	L	D	D1	D2	Z-d	b	f	H	H0
1.0	50	108	165	125	99	4-18	20	2	170	130
1.0	65	112	185	145	118	4-18	20	2	170	145
1.0	80	114	200	160	132	8-18	20	2	230	152
1.0	100	127	220	180	156	8-18	22	2	320	192
1.0	125	140	250	210	184	8-18	22	2	345	200
1.0	150	140	285	240	211	8-22	24	2	385	230
1.0	200	152	340	295	266	8-22	24	2	471	297
1.0	250	165	405	355	319	12-22	26	2	533	327
1.0	300	178	445	400	370	12-22	26	2	606	364
1.0	350	190	505	460	429	16-22	26	2	694	404
1.0	400	216	565	515	480	16-26	26	2	757	444
1.0	450	222	615	565	530	20-26	28	2	814	472
1.0	500	229	670	620	582	20-26	28	2	902	522
1.0	600	267	780	725	682	20-30	34	2	1048	590
1.0	700	292	895	840	794	24-30	34	5	1277	810
1.0	800	318	1015	950	901	24-33	36	5	1385	844
1.0	900	330	1115	1050	1001	28-33	38	5	1490	890
1.0	1000	410	1230	1160	1112	28-36	38	5	1620	950
1.6	50	108	165	125	99	4-18	20	2	170	130
1.6	65	112	185	145	118	4-18	20	2	170	145
1.6	80	114	200	160	132	8-18	20	2	230	152
1.6	100	127	220	180	156	8-18	22	2	320	192
1.6	125	140	250	210	184	8-18	22	2	345	200
1.6	150	140	285	240	211	8-22	24	2	385	230
1.6	200	152	340	295	266	12-22	24	2	471	297
1.6	250	165	405	355	319	12-26	26	2	533	327
1.6	300	178	460	410	370	12-26	28	2	606	364
1.6	350	190	520	470	429	16-26	30	2	694	404
1.6	400	216	580	525	480	16-30	32	2	757	444
1.6	450	222	640	585	548	20-30	40	2	814	472
1.6	500	229	715	650	609	20-33	44	2	902	522
1.6	600	267	840	770	720	20-36	54	2	1048	590
1.6	700	292	910	840	794	24-36	40	5	1277	810
1.6	800	318	1025	950	901	24-39	42	5	1385	844
1.6	900	330	1125	1050	1001	28-39	44	5	1490	890
1.6	1000	410	1225	1170	1112	28-42	46	5	1620	950
2.5	50	108	165	125	99	4-18	20	2	170	130
2.5	65	112	185	145	118	8-18	22	2	265	210
2.5	80	114	200	160	132	8-18	24	2	310	233
2.5	100	127	235	190	156	8-22	24	2	343	242
2.5	125	140	270	220	184	8-26	26	2	385	254
2.5	150	140	300	250	211	8-26	28	2	445	580
2.5	200	152	360	310	274	12-26	30	2	510	297
2.5	250	165	425	370	330	12-30	32	2	569	339
2.5	300	178	485	430	389	16-30	34	2	653	375
2.5	350	190	555	490	448	16-33	38	2	730	420
2.5	400	216	620	550	503	16-36	40	2	810	463
2.5	450	222	670	600	548	20-36	46	2	850	495
2.5	500	229	730	660	609	20-36	48	2	940	566
2.5	600	267	845	770	720	20-39	58	2	1150	630
2.5	700	292	960	875	820	24-42	58	5	1195	727
2.5	800	318	1085	990	609	24-36	58	5	1268	810

Specification Applications

Industries

Oil & Gas Industry: Used in pipelines and processing plants to control flow and manage pressure, ensuring safe and efficient operations.
Power Generation: Applied in power plants, including thermal and hydroelectric plants, to regulate water and steam flow, contributing to efficient energy production.
Water and Wastewater Treatment: Utilized in large-scale water distribution and wastewater treatment facilities for automated flow control, helping maintain water quality and manage distribution.
Chemical Processing: Provides precise flow regulation in the handling of various chemicals, supporting safe and controlled reactions and material transfers.
HVAC Systems: Employed in large heating, ventilation, and air conditioning systems to control airflow, ensuring proper temperature and environmental conditions in industrial facilities.

Electro Hydraulic Linkage Butterfly Valve

Product Overview

Product Features

Specification Parameters

Specification Applications

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