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  • PC490LCi-11 large hydraulic excavator | Komatsu

    Hydraulic tank. 65.5 US gal. Diesel Exhaust Fluid (DEF) tank. 10.3 US gal. Operating Weight (Approximate) Operating weight includes 23 ft. 2 in one-piece HD boom, 11 ft. 1 in arm, SAE heaped 2.94 yd 3 bucket, rated capacity of lubricants, coolant, full fuel tank, operator, …

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  • SAFETY LOAD HOLD VALVE | Hydraulic Systems and Components

    Excavator Load Lock Valves As of 1 st January 2014 all hydraulic earthmoving equipment with an operating weight of 12 tonne or more will require to have load lock protection valves fitted to prevent the uncontrolled lowering of the boom/stick cylinders in the event of a hose failure.. HSC Hydraulics has imported the Fluid-Press range of excavator valves in the following sizes.

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  • Shanghai used loader transfer price

    Used L70e/ 950gc/966h/966g/950e/966h Wheel Loader/ Wheel Loader/ Wa470/Wa380/Wa320 Wheel Loader FOB Price: US $20,000-25,000 / Piece Min. Order: 1 …

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  • Volvo Brochure Excavator EC350E Hybrid English

    Holding valves: Boom and arm holding valves prevent the digging equipment from creeping. Main pump, Type 2 x Variable displacement axial piston pumps Maximum flow l/min 2 x 288 Pilot pump, Type Gear pump Maximum flow l/min 20 Relief value setting pressure Implement MPa 33.3 / 36.3 Travel circuit MPa 33.3 Slew circuit MPa 27.9 Pilot circuit MPa 3.9

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  • Electrohydraulic Control Solutions For Ecaaor

    Excavator boom suspension systems are quite different from the ones used in wheel and backhoe loaders. Excava-tor booms can be single-piece (mono boom), or two-piece. which eliminate additional load sense and load holding check valves. Both SPCL valves use load pressure as the piloting signal.

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  • CHECK AND METERING VALVES - Bosch Rexroth

    B) Boom holding: the Main Control Valve is in neutral position and no flow is delivered to the cylinder. The pressure induced by the load inside the cylinder pushes back the annular check valves against the seats: the oil the cylinder is locked in a "leak free" mode and the boom is held stationary.

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  • Main control valve, relife valve and boom holding - Tonkee

    Aug 30, 2018 · Main control valve, relife valve and boom holding Series Count 1 Parts Count 59. Author Administrator. Post Kefid Update Kefid. GM series excavator final drive, swing motor device, eninge spare parts, hydraulic seals, gear parts, sensor, electronic parts, undercarriage parts, track link since 2012, located in Dongpu Guangzhou, the

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  • What Are The Main Operating Valve Systems For Hitachi

    May 12, 2021 · What Are The Main Operating Valve Systems For Hitachi Excavators? May 12, 2021. The control valve system consists of a traveling shuttle valve, a four-way reversing valve (with a linear travel valve and a stick throttle valve), a five-way reversing valve (with a …

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  • Bagian - bagian control valve Excavator Hitachi zaxis 200

    Mar 30, 2021 · Pada bagian atas control valve excavator hitachi terdiri dari beberapa komponen : Bagian atas control valve. Pada bagian sebelah kanan control valve terdiri dari 4 spool, dimana spool yang dimaksud adalah Travel kanan, Bucket 1, Boom 1, dan Arm 2. Sedangkan Pada bagian sebelah kiri control valve terdiri dari 5 spool yaitu Travel kiri, Aux, Boom

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  • Page 1 of 1 January 2020 Integrated Boom Lock Valve Uses

    The EBLV boom lock valve can be used for a sequence function . or a relief function, depending on how it is plumbed. Using it as a sequence valve can help to reduce the effect of back pressure from the main control valve and hydraulic plumbing. Features -ELBV Boom Lock Valve. Flow Rating: 248 lpm/ 66 gpm. Pressure Rating: 420 bar/ 6091 psi

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  • BOOM SPOOL VALVE - EXCAVATOR John Deere 35D - …

    BOOM SPOOL VALVE - EXCAVATOR John Deere 35D - EXCAVATOR - 35D Compact Excavator (S.N. 234001-264999) EXCAVATOR 3362 CONTROL & LOAD HOLDING VALVES BOOM SPOOL VALVE | …

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  • HYDRAULIC EXCAVATOR TB290-2 - Takeuchi Global

    - Independent Mono Boom Swing - 1,780 mm Arm - 1,960 mm Arm - 2,130 mm Arm - 2-Piece Variable Angle Boom (optional) - Cushioned Boom, Arm and Swing Cylinders - Boom Holding Valve with Lift Alarm - Pattern Change Valve (ISO or G) (optional) - Arm Holding Valve (optional) - Adjust Cylinder Holding Valve (optional) - Boom Swing Stopper (optional)

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  • 1CEBL SERIES LOAD CONTROL / HOLDING VALVE

    These overcentre valves are suitable for use on the boom and dipper cylinders of an excavator to help the manufacturer or user comply with standard ISO8643. They were designed to give relief, load holding and hose failure protection to systems where a pilot system …

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  • 320C Excavator Hydraulic System – Boom Drift Reduction Valve

    320C Excavator Hydraulic System – Boom Drift Reduction Valve. The boom drift reduction valve is placed in the boom circuit between the main control valve and the boom cylinders. When the joystick for the boom is in the NEUTRAL position, the boom drift reduction valve stops oil leakage from the head end of the boom cylinders.

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  • CONTROL VALVE - BACKHOE BOOM CYLINDER SECTION - …

    control valve - backhoe boom cylinder section - crawler excavators case ck15 - case crawler excavator (s/n 1550001-) (s/n 1556723-) (7/91-12/97) 07 hydraulic system control valve - backhoe boom cylinder section | 777parts

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  • Volvo / Samsung | Excavator Final Drive Solutions & Swing

    8230-36550. SWING MOTOR RELIEF V/V. EC135B EC140 EC140B EC140C EC140D EC460 EC460B. 8230-36620. MAIN RELIEF VALVE [ARM HOLDING] EC330B EC330C EC340D EC360 EC360B EC360C. Volvo Final Drive. Volvo Final Drive. Final Drive Solutions/FDS …

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  • US20100000211A1 - Hydraulic control circuit for excavator

    A hydraulic circuit for an excavator is provided, which includes first to third hydraulic pumps, a first traveling control valve and a first boom control valve successively installed along a first center bypass line from a downstream side of the first hydraulic pump, a second traveling control valve and a second boom control valve successively installed along a second center bypass line from a

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  • Page 1 of 1 January 2020 Integrated Boom Lock Valve Uses

    Integrated Boom Lock Valve Uses Pressure Control. To Protect Excavators from Hose Burst. When excavators or backhoe loaders are doing heavy lifting, it can put a strain on the hydraulic system. An unexpected spike . in pressure or flow could cause a hose to rupture, endangering the load and the operator. To protect against this possiblity, a

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  • Parker Motion Systems Division Korea

    - LS valve for travel, Option - Boom, Arm, Bucket holding v/v MO400EX for Excavator • Rated Pressure : 380 bar • Rated Flow : 400 lpm • Application Equipment : above 33ton Excavator • Negative flow control • Features - Mono Block (Ø36) - All pilot operation - Travel straight function - Boom/Arm holding v/v

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  • CHECK AND METERING VALVES - Bosch Rexroth

    pressure, designed for protection systems against hose failure for boom cylinders of hydraulic excavators. If If chosen and calibrated to match the operating conditions of the excavator's hydraulic system, these valve modules can

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