Precise Control And High Efficiency Bring You More Value
HENGLI HYDRAULICPrecise Control and High EfficiencyBring You More ValueHVSP SeriesLoad Sensing Control ValveQuality - Reliable - Efficientwww.henglihydraulic.com
Precise Control and High EfficiencyBring You More ValueHVSP Series Load Sensing Control ValveThe HVSP multi-way valve is a kind of load-sensing controlvalve developed for the mobile machinery application, themaximum flow of one plate can reach 200L/min.The modular design concept allows flexible combination ofplates with different control functions to meet all kinds ofdifferent customer requirements.HVSP is a pre-compensated, load-sensing multi-way valvethat can realize precise flow control independent of the loadpressure; compared to the common directional valve, it ismore energy-efficient and beneficial to improve systemefficiency.Features Load pressure independent flow distribution. Open center, for fixed displacement pump system. Closed center, for load sensing variable pump system. Postive or negative electric proportional LS pressure control. Extensive pilot control options including manual control,hydraulic control, electro-hydraulic on-off control,electro-hydraulic proportional control, CAN bus closed-loopcontrol, etc. Load pressure compensated to enable theflow resistant to load fluctuations. Quick response. Low hysteresis.ApplicationsPiling MachineryForestry MachineryConcrete MachineryHandling MachineryMining MachineryAerial Platform
Size15Rated PressureRated Flow350bar (Pump side)420bar (Actuator side)200 L/min-with load holding, without pressure compensator190 L/min-withput load holding, with pressure compensator150 L/min-with load holding, with pressure compensatorPHydraulic DiagramA1MaLSB1bInlet pressureLS pressureA port working pressureB port working pressureOutlet pressurePATBPilot pressureA port LS pressureTB port LS pressureMB MAPilot-controlled current (pressure) - flow curveLSzYFlow( L/min )The symmetric spool with different flow rates, whose flow and pilot-controlled current (pressure) - flow curve asshown in the graphic, can realize a good linearity and precise c operation0.430.8788.50.481100.530.590.640.69The current at 24 V（A） 1.131.271.41.53The current at 12 V（A） 12141618Pilot pressur（bar） 0.751.67200.81.822.5X
Cutaway view“b” pliotfor E-H controlA side coverPlugAPort relief valveBHand leverTTB sidestroke limitorXYLSA sidestorke limiterPB side cover“a” pliotA sidefor E-H control storke limiterLSrelief lShuttle valve for A, B portpressure signal selectionDecomposedViewShuttlevalveOBE coverEndlet sectionMiddle sectionE-Hcontrol coverHydrauliccontrol coverLS proportionalrelief valveFrictionreset coverPort relief valveStandard coverHandlever coverInlet sectionMain relief valve
Accurate electro-hydraulic closed loop control,comparable to servo valve performanceOn-board electronics: OBEThe internal closed loop positon control configuration ofthe OBE control cover makes the valve spool achieve thedesired postion with accuracy levels approaching theperformance of a servo- valve, by continuouslycomparing the set-point of a remote control device (poteniometer, joystick , plc ) with the feedback signalgenerated by a high precision hall effect positiontransducer.Choice between different types of control:1. Analog control (0 – 5V), with following auxiliarysignals available: Spool postion feedback 5V for external potentiometer or joystick2. CANbus control (J1939 or CANopen protocols)4-PIN CONNECTORALUMINUM HOUSINGELECTRONICCIRCUIT BOARDPROP. VALVE APROP. COILSPROP. VALVE BHALL EFFECT POSITIONTRANSDUCERSpool Stroke (mm) VS Input Voltage Signal (Volt DC)14121086420SPOOL STROKE B2Same as for STROKE A, by varying Vin from 2.25 to 0.9V, thespool will go from NEUTRAL to MAX. STROKE in the oppositedirection.468ALARM / FAIL - SAFE MODEAn input voltage variation beyond the calibration range ( 0.25Vor 4.75V) will bring the system into an ALARM mode, urging thespool to return to its NEUTRAL position until Vin is brought backto its nominal control range.Spool Stroke A (mm)When the input voltage signal fed to the MLTFD5 actuator ismaintained within 2.25 and 2.75V, the directional valve spool isat rest (Neutral Dead Band). When Vin 2.75V, the spool stepsup from NEUTRAL to MINIMUM FLOW control position. A linearramp from MIN. to MAX. spool stroke will follow by increasingVin from 2.75 to4.1V. At Vin 4.50V, the spool is brought into itsFLOAT POSITION, if present. By decreasing the input voltagefrom 4.1 to 2.75V, the spool stroke is linearly reduced and afterthe oil flow is fully shutoff, a step-down from MINIMUM FLOW toNEUTRAL position takes place.00.511.522.533.5Input Voltage Signal (V)44.55Spool Stroke B (mm)SPOOL STROKE A
HENGLI HYDRAULICAs a benchmarking company of Chinese high-end hydraulic transmission industry, HengliHydraulic is always devoting to the innovation and development in the following four areas:production design, manufacturing process, quality improvement and managementimprovement. We, Hengli Hydraulic, is making effort to realize the intelligent manufacture atthe same time the high-efficiency and energy saving of the hydraulic components and try toreshape the “Made in China” image through technology innovation. Meanwhile we arecommitted to creating a new pattern of the world's hydraulics industry and contribute toglobal technological innovation.Hengli Hydraulic is dedicated to designing and developing hydraulic transmission productsand solutions that meet the real needs of local customers for the global market based on thediverse market demands, in particular the field of mobile machinery and tunnel engineering.We, Hengli Hydraulic, take advantage of our years of application experience to provide thecustomer the most optimized solutions, thus establish strong partnerships with ourcustomers and maintain a sustainable development in a competitive market.What we provide Hydraulic Cylinder High performance Hydraulic Test Bench Hydraulic Piston Pump & Motor High-precision Casting Hydraulic Control Valve for Mobile Machinery Pneumatic Components and integrated System Industrial Valve Cold-drawn Seamless Steel Pipe Hydraulic Pump Unit and System Surface Coating-Thermal Spray TreatmentFor more detailed information, please visit our website atwww.henglihydraulic.comWe are looking forward to working with you!CHINAAMERICANo.99 Longqian Road ,Wujin District,Changzhou 213167TEL： 86 400 101 8889E-mail： hengli@ henglihydraulic.com580 Crossroads Parkway, BolingbrookIllinois 60440TEL： 01 630 995 3674E-mail: sales@hengliamerica.comGERMANYJAPANSperenberger Str. 1312277 BerlinTEL: 49 172 368 3463E-mail: jacky.ding@henglihydraulic.com3F, Takakuwa building1-18-13 Hamamatsu-choMinato-ku,Tokyo,105-0013TEL： 81 03 6809 1696E-mail: hl zhaozhen@163.comHengli Hydraulic assumes no responsibility for errors that may exist in brochures, product manuals and other publications. Our products are in continuously development and innovation.Applications information in this brochure is not limited to special condition or applicability in particular industry. Trademarks with Hengli, 恒立, SHLIXIN, LIXIN, 立新and InLine are all ownedby Jiangsu Hengli Hydraulic Co., Ltd. and its subsidiaries and affiliates. Unauthorized use of the above trademarks and the contents of this brochure are prohibited. Hengli Hydraulic 2018EN Print date 04/2018
Postive or negative electric proportional LS pressure control. Extensive pilot control options including manual control, hydraulic control, electro-hydraulic on-off control, electro-hydraulic proportional control, CAN bus closed-loop control, etc. Load pressure compe
This article provides an overview of the challenges and techniques of precise GNSS positioning. It provides a description of Precise Point Positioning (PPP), as implemented in NovAtel CORRECT and compares PPP to the Real Time Kinematic (RTK) method that has been used for precise positioning for over 20 years.
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Precise adjustment of the press depth via hardened lower stop. Honed bores and ground rams provide a long service life and . a precise guidance Press Type 5. Press Type 3 / 6 Press Type 1 / 2 Press Head No.1 and No. 2 have a ground guidance plate and teflon-coated adjustable gibs for precise and torsion-proof . guidance. SCHMIDT Rack-and .File Size: 2MBPage Count: 16
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evaluated based on three of the evaluated carotid stent models. Two out of five stent models (Acculink RX 10 mm and Precise 10mm) had the same distal outer stent sheath diameter but a different stent sheath length. Two stent models (Precise 7mm and Precise 10mm) had the same distal outer stent sheath length but a dif-ferent stent sheath diameter.
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