The hydraulic control slow closing check valve is an advanced pump outlet control equipment at home and abroad. It can be installed at the inlet of hydraulic turbine of hydropower station as the control valve of turbine inlet; it can also be installed at the outlet of various pumps to replace check valve, gate valve and water hammer eliminator. When working, the valve matches with the pipeline host. According to the principle of hydraulic transition process, the pre-set opening and closing procedures can effectively eliminate the water hammer in the pipe network, realize the reliable operation of the pipe network, and play a role in protecting the safety of the pipe network and pump valve equipment. However, due to the valve plate in the center of the flow channel, the butterfly valve can not avoid the erosion of the medium on the valve plate, valve shaft and valve seat sealing surface. At the same time, the valve plate hinders the flow of medium, which is easy to produce slag accumulation and sealing effect, so it can not adapt to the conditions containing slag and impurities.

The hydraulic control slow closing check valve is an advanced pump outlet control equipment at home and abroad. It can be installed at the inlet of hydraulic turbine of hydropower station as the control valve of turbine inlet; it can also be installed at the outlet of various pumps to replace check valve, gate valve and water hammer eliminator. When working, the valve matches with the pipeline host. According to the principle of hydraulic transition process, the pre-set opening and closing procedures can effectively eliminate the water hammer in the pipe network, realize the reliable operation of the pipe network, and play a role in protecting the safety of the pipe network and pump valve equipment. However, due to the valve plate in the center of the flow channel, the butterfly valve can not avoid the erosion of the medium on the valve plate, valve shaft and valve seat sealing surface. At the same time, the valve plate hinders the flow of medium, which is easy to produce slag accumulation and sealing effect, so it can not adapt to the conditions containing slag and impurities.

 

型号示例:

Model example: 800gwxjf747xd hr-40c DN800 with diameter of PN4.0MPa, cast steel energy storage type single chip microcomputer control fixed shaft flange connection hard seal hydraulic control slurry valve Note: the solenoid directional valve of hydraulic system is generally of positive action type, that is, the valve is opened and closed after power failure; otherwise, it is of reaction type, that is, the valve is opened and closed after power failure. The conventional matching is positive action type, which adopts reaction type or other control forms. Please explain when ordering.

 

1. Wide range of application: it is widely used in the conveying control system of blast furnace water flushing slag, power station boiler cinder, mine slime, coal slurry and sewage, and the fluid and semi fluid medium of similar systems in chemical and light industries, and installed at the outlet of water pump for intercepting and checking.
2. Safe and reliable operation: the valve is automatically interlocked with the water pump. When the pump reaches the normal speed, the valve is started under the program control, and the hydraulic station drives the valve plate to open slowly to full open. After the pump is stopped, the valve shall be closed quickly at a certain angle according to the procedure to cut off most of the water flow. Then, under the action of slowly closing the cylinder, part of the backflow medium is discharged to eliminate the water hammer of pump stop, and the impact between the valve plate and the valve body is prevented, and finally the valve is completely closed. In case of sudden power failure or emergency pump shutdown, the valves are automatically closed in two stages of fast and slow closing according to the set procedure to eliminate the harm of water hammer.
3. Strong wear resistance and erosion resistance: when the valve is opened, the sealing surface of the hemispherical valve core is completely back to the flow channel, which is not scoured; due to the eccentric design, it only contacts with the valve seat at the moment of valve closing, so the wear is small. In addition, the valve core and valve seat sealing surface can adopt various advanced processes such as surfacing nickel base alloy (hardness greater than HRC60), supersonic spraying tungsten cobalt alloy (hardness greater than HRC70) and special hardening materials to form wear-resistant and corrosion-resistant layers, which can effectively adapt to various harsh working conditions and extend the service life of valve. Advanced ceramic lining technology can be used in the flow passage to effectively eliminate the wear of valve body. The valve shaft and bearing are designed with anti sediment design to prevent impurities from scouring and entering.
4. No slag accumulation and no water loss: as shown in the figure below, the valve adopts full channel design. When the valve is fully opened, the hemispherical valve core is on one side of the flow channel, which does not occupy the space of the flow channel to hinder the flow of fluid, and is not easy to produce slag accumulation and eddy current. It is especially suitable for "double high" media with high slag content and high flow rate.

5. Long service life of seal: the valve plate sweeps over the valve seat by rotation when closing, and eliminates and rolls the granular impurities. When closing, it can cut off the long strip impurities which are difficult to peel off or hang like an obtuse angle cutting tool, so as to achieve the pure bonding of the sealing pair and effectively extend the service life of the seal.

6. Convenient maintenance: high quality hydraulic and electrical components are adopted and standardized module design is adopted to facilitate operation and maintenance;

Manufacturing standards
The latest version of undated reference documents is applicable to this product.

Standard content	Standard number	Standard name
Design and manufacturing standards	CJ/T283-2008	Eccentric hemisphere valve
Structural length standard	GB/T12221	Structural length of metal valve
Flange standard	GB/T9113.1-4	Integral steel pipe flange / customer specified standard
	GB/T17241.6	Integral cast iron pipe flange
Accumulator	GB/T2352	Pressure and volume range and characteristic quantity of isolated gas filled accumulator
Inspection and test standards	GB/T13927	Pressure test for general purpose valves
	JB/T9092	Test and inspection of valves
Standard of materials used	GB/T12227	Technical conditions of ductile iron castings for general purpose valves
	GB/T12229	Technical specification of carbon steel castings for general purpose valves
	GB/T12230	Technical requirements of austenitic steel castings for general purpose valves

Note: other relevant standards and foreign standards can be used. Flange size can be manufactured according to user's requirements, but it should be indicated in the order contract.

 

Nominal pressure	PN	1.0		1.6	2.5	4.0	6.3	Mpa
strength test	PS		1.5	2.4	3.8	6.0	9.45
Sealing test	P		1.1	1.8	2.8	4.4	6.93
Service temperature	T		-29-120℃
Nominal size	DN200-DN1200
Applicable media

Special parameters: (the opening and closing time can be set according to the working conditions)

project	Adjustable range		Factory preset (adjustable)
Valve opening time (adjustable)	second
Valve closing time (adjustable)	Shut it down	1.5-25 second	8second
	Slow closing	6-90 second	20second

 

 

 

 

1. Through the electrical control valve cabinet, start the water pump. After debugging and setting time, when the water pump reaches the normal speed, the valve will automatically start the hydraulic station under the program control, the pressure oil will enter the rod less cavity of the upper oil chamber of the valve to push the piston to run, and drive the valve plate to open slowly through the valve shaft.
2. When the pump is stopped, the valve acts synchronously, and the pressure oil in the accumulator of the hydraulic control system enters the rod cavity of the oil cylinder through the reversing valve, so that the oil cylinder returns. The valve is closed automatically in two stages. First, the valve is quickly closed by 65 ° to cut off most of the water flow. Then, the cylinder is slowly closed, and the remaining about 25 ° is closed slowly. Part of the reflux medium is discharged to eliminate the water hammer of pump stop, and the impact between the valve plate and the valve body is prevented. Finally, the valve is completely closed. The closing speed and angle can be adjusted on the rear end device of the oil cylinder.
3. In case of sudden power failure or emergency pump shutdown, the valves are automatically closed in two stages of fast and slow closing according to the set procedure to eliminate the harm of water hammer.

 

The energy storage hydraulic system is compact in structure and can be placed on the valve connecting frame or near the valve. It is composed of hydraulic station, hydraulic cylinder and electric control box.
1. There are three power sources for the hydraulic system, namely, the oil pump motor group, the hydraulic energy stored in the accumulator and the manual oil pump. The hydraulic energy stored in the accumulator is the main power source. The oil pump unit is responsible for filling the accumulator with liquid, and can also directly drive the valve switch when necessary. The manual oil pump is used to open and close the valve manually when the oil pump motor fails or the accumulator is repaired.
2. In the case of no power or manual operation, manually push the solenoid valve core to make the oil circuit in the corresponding state, or turn the switch on the electric control box in the corresponding state through the self-contained power supply, and shake the manual oil pump to realize the opening and closing of the valve.
3. The working order of the hydraulic control system is: firstly, the hydraulic system starts the oil pump, and the pressure oil enters into the rod less cavity of the oil chamber through the one-way valve and the directional valve to push the piston to run, so as to open the valve and supply oil to the accumulator at the same time. The oil pressure of the accumulator is determined by the pressure controller. The closing of the valve is that the pressure oil in the accumulator enters the rod cavity of the oil cylinder through the reversing valve, which makes the oil cylinder return and quickly close the valve. The opening speed of the valve is regulated by the throttle valve on the manifold block: the valve is closed automatically in two stages, first fast closing 65 ° and then slowly closing, and the remaining 25 ° closing speed and angle are adjusted on the rear end device of the oil cylinder.
1. Oil filter 2, hand pressure oil pump 3, plunger pump 4, motor 5, stop valve 6, check valve 7, relief valve 8, pressure gauge 9, pressure controller 10, accumulator 11, stop valve 12, cartridge valve 13, hydraulic control check valve 14, electromagnetic directional valve 15, three regulation hydraulic cylinder 16, throttle valve 17, electromagnetic directional valve 18, cut-off
The electrical control box is the control hub of hydraulic station assembly which receives valve status signal and control command and outputs control command and status signal after processing. The main control forms of the electrical control box are universal parts, single chip microcomputer and PLC controller, which can be selected according to the requirements of the system.
a. The general electrical control box is composed of common electrical appliances and electronic components. It is characterized by simple structure, easy assembly, difficult networking and remote control, and low price.
b. Single chip microcomputer electrical control box is composed of single-chip CPU and peripheral components. It is characterized by simple structure, simple intelligence, programmable, network remote control and moderate manufacturing cost.
c. PLC controller type electrical control box is composed of PLC programmable controller and peripheral components. It is characterized by simple structure, intelligence, easy programming, easy realization of network remote control, but the price is high.

 

 

Serial number	Component name	Component model	Company	number
1	air switch	C65N 3P D16A	only	1	Schneider Electric or other manufacturers
2	air switch	C65N 2P C6A	only	1	Schneider Electric or other manufacturers
3	Switching power supply (charger)	S-201-W	only	1	Taiwan Mingwei or other manufacturers
7	AC contactor	LC1D099MTC	only	1	Schneider Electric or other manufacturers
8	Thermal relay	LR2D139C	only	1	Schneider Electric or other manufacturers
9	PLC	CPU224	platform		Siemens or other manufacturers
9	Intermediate relay	2C/0	only	9	Schneider Electric or other manufacturers
10	Push button switch (green)	ZB2 BA3C/BZ95C	only	3	Schneider Electric or other manufacturers
13	Knob switch	ZB2 BD3C/BZ93C	only	3	Schneider Electric or other manufacturers
14	indicator light		only	8	Schneider Electric or other manufacturers
15	terminal	2.5m2-9m2	only	80	Yangzhou Ruiqi or other manufacturers
16	Axial piston pump	9MCY14-1B	only	1	Rexroth or other manufacturers

 

 

Main shapes and components

Serial number	Part name	Material Science	Serial number	Part name	Material Science
1	valve body	Ductile iron, cast steel, stainless steel, ceramic lining	7	snap ring	copper alloy
2	a fastening	stainless steel	8	axle sleeve	copper alloy
3	Sealing element Sealing element	Nitrile rubber, EPDM Sealing element	9	Short axle shaft Sealing element	stainless steel
4	valve seat	Stainless steel, cemented carbide	10	Long axle shaft	stainless steel
5	Hemispherical spool	Ductile iron, cast steel and wear-resistant cast steel	11	Seal sleeve	Nitrile rubber
6	End cap	Gray iron, ductile iron and cast steel	12	control device	Hydraulic system

Table1:

nominal Diameter	length	Overall dimension (reference value)									Connection size (standard value)						reference resources weight
											0.6MPa			1.OMPa
millimeter	L	E	H	H1	A	B	M	K	P	n-b	D	D1	n-d	D	D1	n-d	(kg)
200	400	590	520	200	160	180	520	380	650	4-16	320	280	8-18	340	295	8-22	152
250	450	670	580	235	160	200	520	380	650	4-16	375	335	12-18	395	350	12-22	198
300	630	770	710	270	220	230	570	496	700	4-16	440	395	12-22	445	400	12-22	280
350	740	790	770	305	240	260	570	496	700	4-20	490	445	12-22	505	460	16-22	487
400	840	870	830	335	300	280	602	525	755	4-20	540	495	16-22	565	515	16-26	605
450	940	950	870	360	320	300	602	525	755	4-24	595	550	16-22	615	565	20-26	806
500	1016	1145	930	390	360	330	602	525	755	4-24	645	600	20-22	670	620	20-26	910
600	1140	1250	1090	450	450	400	620	556	795	4-28	755	705	20-26	780	725	20-30	1100
700	1320	1450	1260	510	480	450	620	556	795	4-30	860	810	24-26	895	840	24-30	2012
800	1500	1800	1440	575	620	480	620	556	795	4-30	975	920	24-30	1015	950	24-33	2805
900	1660	1940	1535	630	620	560	620	556	795	4-36	1075	1020	24-30	1115	1050	28-33	3950
1000	1850	2090	1750	700	700	620	665	576	980	4-36	1175	1120	28-30	1230	1160	28-36	5310
1200	2220	2435	1960	800	750	720	665	576	980	4-42	1405	1340	32-33	1455	1380	32-39	6230
1400	2580	2860	2250	900	850	820	665	576	980	4-46	1630	1560	36-36	1675	1590	36-42	7830
1600	2960	3210	2500	1020	1100	960	682	622	1310	4-46	1830	1760	40-36	1915	1820	40-48	9150
1800	3300	3480	2820	1175	1300	1060	682	622	1310	4-58	2045	1970	44-39	2115	2020	44-48	12600
2000	3700	3780	3150	1250	1500	1160	682	622	1310	4-58	2265	2180	48-42	2325	2230	48-48	19800
2200	4070	4220	3500	1320	1800	1300	1000	920	1820	4-68	2475	2390	52-42	2560	2440	52-62	24000
2400	4500	4560	3800	1430	2000	1400	1000	920	1820	4-68	2685	2600	56-42	2760	2650	56-56	35000

Table2:

nominal Diameter	length	Overall dimension (reference value)									Connection size (standard value)						reference resources weight
														2.5MPa
millimeter	L	E	H	HI	A	B	M	K	P	n-b	D	D1	n-d	D	D1	n-d	(kg)
200	400	590	520	200	160	180	520	380	650	4-16	340	295	12-22	360	310	12-26	152
250	450	670	580	235	160	200	520	380	650	4-16	405	355	12-26	425	370	12-30	198
300	630	770	710	270	220	230	570	496	700	4-16	460	410	12-26	485	430	16-30	280
350	740	790	770	305	240	260	570	496	700	4-20	520	470	16-26	555	490	16-33	487
400	840	870	830	335	300	280	602	525	755	4-20	580	525	16-30	620	550	16-36	605
450	940	950	870	360	320	300	602	525	755	4-24	640	585	20-30	670	600	20-36	806
500	1016	1145	930	390	360	330	602	525	755	4-24	715	650	20-33	730	660	20-36	910
600	1140	1250	1090	450	450	400	620	556	795	4-28	840	770	20-36	845	770	20-39	1100
700	1320	1450	1260	510	480	450	620	556	795	4-30	910	840	24-36	960	875	24-42	2012
800	1500	1800	1440	575	620	480	620	556	795	4-30	1025	950	24-39	1085	990	24-48	2805
900	1660	1940	1535	630	620	560	620	556	795	4-36	1125	1050	28-39	1185	1090	28-48	3950
1000	1850	2090	1750	700	700	620	665	576	980	4-36	1255	1170	28-42	1320	1210	28-55	5310
1200	2220	2435	1960	800	750	720	665	576	980	4-42	1485	1390	32-48	1530	1420	32-55	6230

Table 3:

nominal Diameter	length	Overall dimension (reference value)									Connection size (standard value)						reference resources Weight
											4.0MPa			6.3MPa
millimeter	L	E	H	H1	A	B	M	K	P	n-b	D	D1	n-d	D	D1	n-d	(kg)
200	400	375	375	375	320	375	320	375	650	4-20	375	320	12-30	415	345	12-36	280
250	450	450	450	450	385	450	385	450	650	4-20	450	385	12-33	470	400	12-36	487
300	630	515	515	515	450	515	450	515	700	4-24	515	450	16-33	530	460	16-36	605
350	740	580	580	580	510	580	510	580	700	4-24	580	510	16-36	600	525	16-39	806
400	840	660	660	660	585	660	585	660	755	4-28	660	585	16-39	670	585	16-42	910
450	940	685	685	685	610	685	610	685	755	4-30	685	610	20-39	/	/	/	1100
500	1016	755	755	755	670	755	670	755	755	4-30	755	670	20-42	/	/	/	2012
600	1140	890	890	890	795	890	795	890	795	4-36	890	795	20-48	/	/	/	2805
700	1320	995	995	995	900	995	900	995	795	4-36	995	900	24-48	/	/	/	3950
800	1500	1140	1140	1140	1030	1140	1030	1140	795	4-42	1140	1030	24-56	/	/	/	5310
900	1660	1250	1250	1250	1140	1250	1140	1250	795	4-46	1250	1140	28-56	/	/	/	6230
1000	1850	1360	1360	1360	1250	1360	1250	1360	980	4-46	1360	1250	28-56	/	/	/	7830

Note: due to product improvement, there may be some differences between the material object and the publicity materials. We reserve the right to interpret the above data. Please contact the technical department of our company for specific parameters.
Precautions for installation and use
1. Valves and hydraulic devices shall be placed in a ventilated and dry room, and shall not be stacked or stored in the open air to prevent damage and corrosion;
2. During long-term storage or maintenance, the two valves should be closed and the valve should be in the closed state to prevent foreign matters from entering the cavity and losing the sealing surface;
3. Before installation, the valve should be carefully verified whether the service condition is consistent with the performance specification, and the valve cavity should be cleaned to keep the sealing surface clean;
4. The hydraulic system should be regularly overhauled, filtered or replaced with hydraulic oil, and the oil tank should be cleaned.
5. The valve is one-way use, installation must be in accordance with the arrow direction of the valve, reverse installation is strictly prohibited.
6. Please pay attention to protect the pressure gauge and bypass pipe during hoisting and installation.
7. The valve is closed for a long time when it is used. It is better to open the water regularly to flush the slag slurry. In general, it is necessary to send water for flushing at least once after opening.
8. Hydraulic oil should be selected according to the requirements, yb-n32 or yb-n46 anti-wear hydraulic oil can be selected in general area, yc-n32 or yc-n46 low-temperature hydraulic oil can be selected in cold area. (low temperature hydraulic oil can be used in all seasons)
9. Local or remote control can be selected according to the working conditions. When the transfer switch of the local electric control box is switched to the stop position, the buttons on the electric control box will not work.

Main shapes and components

Serial number	Part name	Material Science	Serial number	Part name	Material Science
1	valve body	Ductile iron, cast steel, stainless steel, ceramic lining	7	snap ring	copper alloy
2	a fastening	stainless steel	8	axle sleeve	copper alloy
3	Sealing element	Nitrile rubber, EPDM	9	Short axle shaft	stainless steel
4	valve seat	Stainless steel, cemented carbide	10	Long axle shaft	stainless steel
5	Hemispherical spool	Ductile iron, cast steel and wear-resistant cast steel	11	Seal sleeve	Nitrile rubber
6	End cap	Gray iron, ductile iron and cast steel	12	control device	Hydraulic system

Table 1:

nominal Diameter	length	Overall dimension (reference value）									Connection size (standard value)						reference resources weight
											0.6MPa			1.OMPa
millimeter	L	E	H	H1	A	B	M	K	P	n-b	D	D1	n-d	D	D1	n-d	(kg)
200	400	590	520	200	160	180	520	380	650	4-16	320	280	8-18	340	295	8-22	152
250	450	670	580	235	160	200	520	380	650	4-16	375	335	12-18	395	350	12-22	198
300	630	770	710	270	220	230	570	496	700	4-16	440	395	12-22	445	400	12-22	280
350	740	790	770	305	240	260	570	496	700	4-20	490	445	12-22	505	460	16-22	487
400	840	870	830	335	300	280	602	525	755	4-20	540	495	16-22	565	515	16-26	605
450	940	950	870	360	320	300	602	525	755	4-24	595	550	16-22	615	565	20-26	806
500	1016	1145	930	390	360	330	602	525	755	4-24	645	600	20-22	670	620	20-26	910
600	1140	1250	1090	450	450	400	620	556	795	4-28	755	705	20-26	780	725	20-30	1100
700	1320	1450	1260	510	480	450	620	556	795	4-30	860	810	24-26	895	840	24-30	2012
800	1500	1800	1440	575	620	480	620	556	795	4-30	975	920	24-30	1015	950	24-33	2805
900	1660	1940	1535	630	620	560	620	556	795	4-36	1075	1020	24-30	1115	1050	28-33	3950
1000	1850	2090	1750	700	700	620	665	576	980	4-36	1175	1120	28-30	1230	1160	28-36	5310
1200	2220	2435	1960	800	750	720	665	576	980	4-42	1405	1340	32-33	1455	1380	32-39	6230
1400	2580	2860	2250	900	850	820	665	576	980	4-46	1630	1560	36-36	1675	1590	36-42	7830
1600	2960	3210	2500	1020	1100	960	682	622	1310	4-46	1830	1760	40-36	1915	1820	40-48	9150
1800	3300	3480	2820	1175	1300	1060	682	622	1310	4-58	2045	1970	44-39	2115	2020	44-48	12600
2000	3700	3780	3150	1250	1500	1160	682	622	1310	4-58	2265	2180	48-42	2325	2230	48-48	19800
2200	4070	4220	3500	1320	1800	1300	1000	920	1820	4-68	2475	2390	52-42	2560	2440	52-62	24000
2400	4500	4560	3800	1430	2000	1400	1000	920	1820	4-68	2685	2600	56-42	2760	2650	56-56	35000

Table 2:

nominal Diameter	length	Overall dimension (reference value)									Connection size (standard value)						reference resources weight
											1.6MPa			2.5MPa
millimeter	L	E	H	HI	A	B	M	K	P	n-b	D	D1	n-d	D	D1	n-d	(kg)
200	400	590	520	200	160	180	520	380	650	4-16	340	295	12-22	360	310	12-26	152
250	450	670	580	235	160	200	520	380	650	4-16	405	355	12-26	425	370	12-30	198
300	630	770	710	270	220	230	570	496	700	4-16	460	410	12-26	485	430	16-30	280
350	740	790	770	305	240	260	570	496	700	4-20	520	470	16-26	555	490	16-33	487
400	840	870	830	335	300	280	602	525	755	4-20	580	525	16-30	620	550	16-36	605
450	940	950	870	360	320	300	602	525	755	4-24	640	585	20-30	670	600	20-36	806
500	1016	1145	930	390	360	330	602	525	755	4-24	715	650	20-33	730	660	20-36	910
600	1140	1250	1090	450	450	400	620	556	795	4-28	840	770	20-36	845	770	20-39	1100
700	1320	1450	1260	510	480	450	620	556	795	4-30	910	840	24-36	960	875	24-42	2012
800	1500	1800	1440	575	620	480	620	556	795	4-30	1025	950	24-39	1085	990	24-48	2805
900	1660	1940	1535	630	620	560	620	556	795	4-36	1125	1050	28-39	1185	1090	28-48	3950
1000	1850	2090	1750	700	700	620	665	576	980	4-36	1255	1170	28-42	1320	1210	28-55	5310
1200	2220	2435	1960	800	750	720	665	576	980	4-42	1485	1390	32-48	1530	1420	32-55	6230

Table 3

nominal
Diameter

length	Overall dimension (reference value)									Connection size (standard value)						reference resources Weight
										4.0MPa			6.3MPa
millimeter		E	H	H1	A	B	M	K	P	n-b	D	D1	n-d	D	D1	n-d	(kg)
200	400	375	375	375	320	375	320	375	650	4-20	375	320	12-30	415	345	12-36	280
250	450	450	450	450	385	450	385	450	650	4-20	450	385	12-33	470	400	12-36	487
300	630	515	515	515	450	515	450	515	700	4-24	515	450	16-33	530	460	16-36	605
350	740	580	580	580	510	580	510	580	700	4-24	580	510	16-36	600	525	16-39	806
400	840	660	660	660	585	660	585	660	755	4-28	660	585	16-39	670	585	16-42	910
450	940	685	685	685	610	685	610	685	755	4-30	685	610	20-39	/	/	/	1100
500	1016	755	755	755	670	755	670	755	755	4-30	755	670	20-42	/	/	/	2012
600	1140	890	890	890	795	890	795	890	795	4-36	890	795	20-48	/	/	/	2805
700	1320	995	995	995	900	995	900	995	795	4-36	995	900	24-48	/	/	/	3950
800	1500	1140	1140	1140	1030	1140	1030	1140	795	4-42	1140	1030	24-56	/	/	/	5310
900	1660	1250	1250	1250	1140	1250	1140	1250	795	4-46	1250	1140	28-56	/	/	/	6230
1000	1850	1360	1360	1360	1250	1360	1250	1360	980	4-46	1360	1250	28-56	/	/	/	7830

Note: due to product improvement, there may be some differences between the material object and the publicity materials. We reserve the right to interpret the above data. Please contact the technical department of our company for specific parameters.

 

1. Valves and hydraulic devices shall be placed in a ventilated and dry room, and shall not be stacked or stored in the open air to prevent damage and corrosion;
2. During long-term storage or maintenance, the two valves should be closed and the valve should be in the closed state to prevent foreign matters from entering the cavity and losing the sealing surface;
3. Before installation, the valve should be carefully verified whether the service condition is consistent with the performance specification, and the valve cavity should be cleaned to keep the sealing surface clean;
4. The hydraulic system should be regularly overhauled, filtered or replaced with hydraulic oil, and the oil tank should be cleaned.
5. The valve is one-way use, installation must be in accordance with the arrow direction of the valve, reverse installation is strictly prohibited.
6. Please pay attention to protect the pressure gauge and bypass pipe during hoisting and installation.
7. The valve is closed for a long time when it is used. It is better to open the water regularly to flush the slag slurry. In general, it is necessary to send water for flushing at least once after opening.
8. Hydraulic oil should be selected according to the requirements, yb-n32 or yb-n46 anti-wear hydraulic oil can be selected in general area, yc-n32 or yc-n46 low-temperature hydraulic oil can be selected in cold area. (low temperature hydraulic oil can be used in all seasons)
9. Local or remote control can be selected according to the working conditions. When the transfer switch of the local electric control box is switched to the stop position, the buttons on the electric control box will not work.