Name:

Hydraulic Control Butterfly Valve

Category：

Butterfly valve

Remark:

Liquid-controlled butterfly valve is a butterfly valve, liquid-controlled butterfly valve sub-pressure-type, lock-type and energy-saving three. It applies to the pump outlet and turbine inlet piping, as a closed-circuit and check valve, used to avoid and reduce the piping system in the media backflow and excessive water hammer to protect the piping system.

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Product Details

Product Usage

Specification

Design and manufacture of standards: GB / T 12238-2008
Structure length standard: GB / T 12221-2005
Connection flange standard: GB / T 9113
Pressure temperature grade: GB / T 12224-2005
Test test standards: GB / T 13927-2008

Structural features

The pressure-type, locking-type liquid-controlled butterfly valve, driven by hydraulic drive, can be closed by the weight of the hammer. After the valve is installed, it can replace the gate valve (butterfly valve) and check valve, and the flow resistance coefficient is small. Valve closing time and speed of two stages, the first paragraph for the fast off, the latter part of the slow off, and can be adjusted according to user needs fast and slow closing time and angle, pressure-type hydraulic system with open valve automatically holding pressure and automatic reset function. Locked with dual automatic locking and locking pin locking. Accumulator liquid-controlled butterfly valve open by the pump, and closed by the accumulator. As a result of the accumulator off the valve, thus eliminating the weight, so take up space, easy installation, compact structure. Electrical control can be based on user needs common type control and PLC control, to achieve the valve linkage, and remote control can be achieved in situ and computer control.

【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

Principle

1) Open the valve: hydraulic butterfly valve open, the use of hydraulic control station and the lifting cylinder force, through the arm, hammer rod, valve shaft and other components, driven by 90 ° rotation of the disc. At the same time, the hydraulic control station and the lifting cylinder also elevates the weight vertically by lifting the arm and the weight rod, converts the weight of the weight to potential energy, and prepares for closing the valve.

2) Locking: The locking mechanism of the liquid-controlled butterfly valve is composed of transmission cylinder, mechanical locking shaft, electromagnetic locking shaft, electromagnet and other components. It has the function of mechanical electromagnetic interlocking. When the valve is fully open, the driving force of the transmission cylinder drives the machine The locking shaft is put into the locking position for the initial locking, and then the electromagnetic locking shaft is driven by the electromagnetic force of the electromagnet to perform the final locking. The locking process is performed automatically and completely in a series of switches under the action of a series of switches. The huge force of the hammer is completely affected by the mechanical lock bearing. The withdrawal of the mechanical lock shaft is restricted by the electromagnetic lock shaft. The withdrawal of the electromagnetic lock shaft is controlled by the electromagnetic force of the electromagnet. As long as the electromagnet does not lose electricity, its electromagnetic lock The shaft and the mechanical locking shaft are firmly controlled, no matter how long the valve is open, no matter how heavy the weight is, the hammer (the plate) will never fall a trace, to ensure the plate is always open after the open state Flow resistance state), during which no need to fill the oil, make-up measures.

3) off valve: off valve in three cases, A: man-off valve; B: pump or valve failure failure off their own valve; C: loss of off-line off valve. No matter what kind of situation off the valve, just let the electromagnet power loss can be automatically shut down according to a predetermined procedure, electromagnet instantly disappear instantly when electromagnet lose power. Electromagnetic lock shaft once the role of the electromagnetic force is lost immediately unlocked, mechanical lock shaft in the electromagnetic lock axis can unlock the unlocked, then the weight of the hammer that hammer rod, lifting arm, valve shaft and other components driven plate In accordance with the pre-set fast off, buffer, slow off the program for the closing movement, the whole process in one go. During the closing process of the liquid-controlled butterfly valve, the oil in the lower chamber of the lifting cylinder must be excluded. Therefore, the method of controlling and adjusting the discharge speed of the lifting cylinder can effectively control the closing speed of the valve. Liquid-controlled butterfly valve closing process fast off, buffer, slow off three procedures, the fast-off time, slow off time, fast off angle, slow off angle can be adjusted.

Product Parts Materials

Model		D743H-16	D743W-16P	D743W-16R
Working pressure（MPa）		1.6
Applicable 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	Surfacing 507	－	－
	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

Structure picture

Inquiry

If you have any enquiry about quotation or cooperation,please feel free to email us at info@cnlgvalve.com or use the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.

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Hydraulic Control Butterfly Valve

Butterfly valve

Product Details

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