If a remote control relief valve is used in the vent circuit, see page 203. Hydraulic relief valve is also known as hydraulic overflow valve. Use under conditions where the viscosity and temperature of the hydraulic fluid remain in the ranges indicated in the following. L3 l6 af 1 af 1 af 2 t p iso interface o4 drill, 5 deep. Yuken modular pressure relief valve are used for the fixed replacement pump of throttle speed adjustment return line. Valve type 25 21 25 25 25 25 25 21 21 25 21 35 maximum operating pressure mpa max. This valve consists of a small dc solenoid and a directacting relief valve. The leading yuken hnc ebg series of ebg03, ebg06, ebg10 pilot operated pressure relief proportional valve manufacturers and suppliers in china, offers pressure relief proportional valves with competitive price here. Repeated resetting can be made easily with a digital readout. Pilot operated relief valves bg bt yuken by ala industries. Yuken bt series pilot operated relief valve photo and schematic. Solenoid controlled relief valves abstbsg yuken by ala. Yuken hydraulic equipment catalog all world machinery.
An external setting unit which makes the command voltage of 010 v and a dc power supply or a function generator are n ecessary, b ut if a variable resistor for external setting is only one, the internal power supply for amplifier can be used. The safety valve is used to the pressure relief devices or piping systems against high pressures, caused by malfunction in the system. When energized, the valve closes, blocking flow from 2 to 1. Direct type relief valves this valve is used in a hydraulic circuit to prevent damage due to over pressure and to adjust the maximum circuit pressure of small capacity. In highlow pump circuits, the valve acts to unload the large volume pump with the same manner as described above during load operation of the small volume. Unloading relief valves unloading relief valves these valves are used to operate the pumps with minimum load in accumulator circuits or in highlow pump circuits. In addition, if the internal volume of the vent line is too large, chattering is likely to occur. For the most part nickel plated valves can substitute for standard valves. This valve is used in hydraulic system to prevent damage due to over pressure and to adjust the maximum system pressure of small. Obviously as the name suggests pressure relief valves are a safety device designed to open when system pressure ie in a vessel or pipework becomes too great and may damage equipment or endanger personnel if not relieved.
Flow control valvesflow control and check valves valve type 21 25 21 21 25 25 25 21 14 35 maximum operating pressure mpa max. Remote control or highlow twopressure control is possible. Widely used in industry, these offered products are highly accredited in the industry. Relief valve modular rducingvalve sequenece valve pressure switch valve. Yuken hnc ebg series of ebg03, ebg06, ebg10 pilot operated. Consists of a double pump with either two relief valves, or one relief and one unloading and check valve incorporated within a common housing. These valves protect the hydraulic system from excessive pressure, and can be used to maintain constant pressure in a hydraulic system. The image to the right shows a cutaway of an actual hydraulic control valve.
Yuken bg 03, bg 06, bg 10, bt 06 pilot operated relief valve. Yuken bucg 06, bucg 10 unloading relief valve are used to operate pumps under a minimum load in accumulator or 2pressure pump circuits etc. This pilot relief valve controls flow in a hydraulic system with a low flow rate and controls pressure proportionally in relation to input current. The yuken relief valve overflows the excess oil in the hydraulic system back to the tank, at this point the valve is in a normally open state. Eh series proportional electrohydraulic valves a closed loop is formed by including a power amp and sensor in the control valve for highprecision hydraulic control.
Operated by electric signals or when combined with a remote control relief valve, creates a two or three pressure control system for your hydraulics. Series rvp relief valves provide reliable venting of gases or liquids for set pressures from 3,000 psi 205 bar minimum to 75,000 psi 5171 bar. Thus, as far as possible reduce the inside diametre and the length of the pipe. Direct acting pressure relief valve a polyhydron group. It serves as a pilot valve for a low flow rate hydraulic system or a proportional electrohydraulic control valve and controls the pressure in proportion to the input current. Details of proportional electrohydraulic relief valve. Reliefrelief type 5050ct 50150ct reliefrelief type reliefunloading type. When a hydraulic relief valve is working, it controls and adjusts the pressure of hydraulic oil by the pressure of the spring. Yuken logic valves yukens logic valves comprise cartridge type elements and covers with pilot passages. Yuken hydraulic pressure control valves relief valves. In these selfadjusting hydraulic shock absorbers the force becoming effective onto the piston is cushioned by displacing of oil through a combination of a pressure relief valve and a flow cntrole whose cushioning effect increases the more, the more the piston rod is induced into the cyliner. Relief modular valves mbp protect the hydraulic system from excessive pressure and can be used to maintain constant pressure in a hydraulic system. For use with hydraulic fluids other than those listed above, please consult your yuken representatives in advance. Control valve the flow from the pump to the cylinder is controlled by a sliding spool valve which can be actuated a hand or foot operated lever or an electric solenoid.
With a strong awareness of the current market needs, we are efficiently immersed in offering an unbeatable assortment of yuken unloading relief valve. Various types may be combined for direction, flow rate and pressure control. D04896 a polyhydron group company 2 of 6 subplate type factory standard threaded port body l4 h2 od1 l5 b1 b2 l1 od2 h1 af 3 l2 max. When the pressure of hydraulic oil is lower than operating pressure, valve spool is. Relief valves pressure remote control direct type controls. We take pride in providing the hydraulic parts, services and support to help you get the job done right. Valve size 03 06 piping size 34 06 piping size l 10 piping size 114 1 ox piping size 112 no. Specifications the value in is for the closedloop type. We offer a full ecommerce section at along with our experienced staff that you can call, email, or visit at any of our 3 locations. By combining a lownoise pilotoperated relief valve and a solenoid operated directional valve, yuken created a noload pump. Electro hydraulic relief valve all industrial manufacturers. Exceeds the pressure of the spring so the valve disk is lifted from the seat and the pressure is relaxed in the drain line.
Yuken hydraulic pressure control valves relief valves, pilot. Pilot operated relief valves instructions if a remote control relief valve is used in the vent circuit, see page 1 in eicc10010. The standard temperature range for all models is 423 to 400f 252 to 204c. A solenoidoperated, 2way, normally open, piloted poppettype, screwin hydraulic cartridge valve designed for low leakage in loadholding applications. This valve is used in a hydraulic circuit to prevent damage due to over pressure and to adjust the maximum circuit pressure of small.
Relief relief type 5050ct 50150ct relief relief type relief unloading type. Full flow of relief valve is defined at 10% over set pressure. Relief valve modular rducingvalve sequenece valve pressure switch valve flow control and check valve. Hydraulic relief valves eaton vickers ct 06, ct 10, cg. This combination valve contains a relief valve directacting and a dc solenoid, and should be used with a power amplifier as specified. Specially designed nickelplated valves for the mobile industry. In accumulator circuits, when the system pressure reaches to a cut out. Modular relief valve, axial piston pump, single vane pump, piston pump, fixed displacement vane pump, hydraulic seal, direction control valve, yuken solenoid valve, pressure switch yuken, pressure control valves, hydraulic power pack, automatic saving compactors, hydraulic equipment, gear pumps, flow control valves, hydraulic solenoid coil, sun cartridges, pump kit, proportional valve, yuken. If the valve is provided with a vent ristrictor ex.
Solenoid controlled relief valves abstbsg these valves are a combination of a pilot operated relief valve and a solenoid operated directional valve. With 35 years and counting of service we are still the leading hydraulic specialists. As a leading manufacturer of hydraulic equipment, weve worked to meet expectations across a broad range of industries. Pilot operated relief valves c pilot operated relief valves pilot operated relief valves these valves protect the hydraulic system from excessive pressure, and can be used to maintain constant pressure in a hydraulic system. Valve locator manually operated functional symbol flow typical model cavity rating pressure page manual rotary, 4way, 3position detented lmin usgpm bar psi mrv510de c104 11 3 210 3000. Operation when deenergized, the sv0821 allows flow from 2 to 1, while flow from 1 to 2 is severely restricted. These are solenoid operated directional valves of high pressure, high flow and low pressure. Piping between the two is eliminated as the solenoid valve is directly mounted on the relief valve and connected with the relief valve vent. This valve is derived by combining a small, highperformance 18 proportional electrohydraulic pilot relief valve with a specially developed lownoise relief valve. China yuken relief valve manufacturer, yuken modular relief. These products are widely known and appreciated for.
Yuken edg series electrohydraulic pilot relief valves. Absg03, the viscosity range should be 15 200 mm2s 80 900 ssu. Pmax 180bar as long as p valve is derived by combining a small, highperformance 18 proportional electrohydraulic pilot relief valve with a specially developed lownoise relief valve. A valve feather under spring pressure is seated in the. Hydraulic specialists pumps, valves, controls and systems. Any type of hydraulic fluids listed in the table below can be used. Ec0117 50t,150t,250f series vane fixed displacement. Model numbers threaded connection subplate mounting.
Yuken logic valves yuken s logic valves comprise cartridge type elements and covers with pilot passages. With this valve, it is possible to regulate the system pressure in proportion to the input current. Yuken series valves part name picture comments pressure controls valves remote control relief valves direct type relief valves pilot operated relief valves be used as a remote control valve for pilot operated type pressure control valves. Various type of pressure control valves are available, from relief valves to pressure switches, to control the pressure at suitable level in the hydraulic system. Introduction of hydraulic valve types kaidi solenoid. The valve can also be used as a relief valve for the hydraulic system where a sm all flow rate and continuous pressure control are required. Yuken proportional electrohydraulic controls such as pilot. Piston pumps a series a3h series vane pumps vane pumps pv2r series pv2r series double pumps pv2r24a34a series double pumps pv2r4a series. Japan yuken proportional electrohydraulic flow control and relief valve efbg03125h61 0. These valves are a combination of a pilot operated relief valve and a solenoid operated. Useful in applications under severe water contact or washdown conditions.
Hydraulic circuits can be formed by including the valves in the block or manifold, making them optimal for more compact hydraulic systems. The pressure of each pump can be independently adjusted. When the pressure of hydraulic oil is lower than operating pressure, valve spool is pressed to the hydraulic oil inlet by the spring. Though the operating limits are a bit lower than our yuken valves, these valves should work in most of your applications. The ebg series of ebg03, ebg06, ebg10 pilot operated pressure relief proportional valve is an energysaving valve, which can provide for the implementation of the components to be the minimum pressure and flow. Yuken logic valves can be incorporated in manifold blocks to form optimum integrated hydraulic circuits and compact hydraulic power units. To adjust the pressure, loosen the lock nut and turn the handle slowly clockwise for higher pressures or anticlockwise for lower pressures. Hydraulic relief valves eaton vickers ct 06, ct 10, cg 06. Pump pressure may be unloaded remotely by an electrical signal to the solenoid, or by connecting pilot relief valves to the solenoid valve ports p age 20 low noise type solenoid controlled relief valves the lownoise solenoid controlled relief valve is a combination. The valve shown in the illustration is a open center valve, meaning that the oil flow is returned to the. The valve can be used as a pilot valve of the proportional electrohydraulic control valves. This valve is used in a hydraulic circuit to prevent damage due to over pressure and to adjust the maximum circuit pressure of small capacity. Were dedicated to making products that broadly and seamlessly blend in with peoples lives by fusing contemporary hydraulics with a broad range of cuttingedge technologies.
Piping of the tank line should not be connected to any tank line of the other valves, but. China yuken relief valve manufacturer, yuken modular. Dt0122 dg0122 be used in a hydraulic circuit to prevent damage due to over pressure and to. Our organization is considered as one of the emerging names in the industry indulged in providing a broad range of yuken bg 03, bg 06, bg 10, bt 06 pilot operated relief valve. Note that this valve is used in conjunction with the applicable power amplifier. Yuken proportional electrohydraulic controls such as. The valves with an integral check valve allow a controlled flow and reverse free flow. The rating for pressure controls is applied to models with proportional pilot relief valve. Remote control and unloading are permitted by using vent circuits. Since our founding, yuken has given much thought to what our customers want and need. These valves are a combination of a pilot operated relief valve and a solenoid operated directional valve.
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