How does an excavator control valve work? – Mysweetindulgence
Flow control valves: The fluid flow rate in a hydraulic system is controlled by flow control valves. Flow control valves regulate the volume of oil supplied to different parts of a hydraulic system. Application To Excavator for brand of Cat, Caterpillar Excavator, Komatsu Excavator, DooSan Excavator, Hitachi Excavator, Kobelco Excavator
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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 …
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John Deere 135G Excavator Operation & Test Technical
John Deere 135G Excavator Operation & Test Technical Service Manual (TM12666) Auxiliary Flow Rate Control Valve Circuit Operation Blade Circuit Operation—If Equipped Swing Reduction Gear Case Operation Swing Motor, Crossover Relief Valve, and Make-Up Check Valve Operation
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Three minutes to learn how to adjust the main relief valve
Jun 11, 2019 · Is there a fault in the flow valve? Main relief valve adjustment. It is clear that the root cause of the failure phenomenon of the excavator, such as powerlessness and braking, is the main relief valve. We must adjust it in a targeted manner. The adjustment of the main relief valve is divided into two parts.
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Heavy Equipment Valves for John Deere Excavator for sale
New John Deere 4390085 Hitachi OEM Excavator Valve Relief EX2500. $74.99. or Best Offer. JOHN DEERE HITACHI HOLDING VALVE 4721199 BRAND NEW EXCAVATOR BACKHOE $8.72 shipping. or Best Offer. 4464354 GENUINE Hitachi FLOW CONTROL HYD. VALVE John Deere . $237.49. John Deere Original Equipment Valve #AR53301. $41.22. Free shipping. John Deere
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EXCAVATOR AND CONTROL VALVE FOR EXCAVATOR - SUMITO…
Excavator valves supplied by Finotek is cartridge type, hydraulic control, pressure relief valve, manufactured for repairing used excavators, as excavator parts, which is to repair used Hitachi excavators; used Kobelco excavators, used Cat–Caterpillar excavators, used Komatsu excavators, used HyunDai & Doosan excavators etc. Finotek excavator valves as excavator parts are …
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Komatsu excavator pilot pressure system and sensor
Nov 15, 2018 · Self-pressure reducing valve principle The self-pressure reducing valve uses the main pump output oil flow to reduce it to (33 kg per square centimeter) of control pressure, acting on the solenoid valve and the ppc valve, similar to the pilot pump. effect. Neutral, and when the load pressure P2 i
Get a quoteCauses and maintenance of the work failure of Komatsu
Sep 29, 2019 · If there is a fault in the control valve group used to regulate the output flow of the main pump, such as the PLS feedback circuit is blocked, the LS valve spool is stuck, the excavator repairs the PC valve spool stuck, or the PC-EPC solenoid valve internal coil …
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Pilot Control Valves for Excavator
This series of pilot valves is mainly used for the control oil line of a hydraulic system and enable control oil with low flow and pressure to control the output pressure of pilot oil so as to meet the requirement on working conditions of the system. The product can be adopted to control multiway valves and be widely applied to engineering machines like excavator.
Get a quoteModular and block control valves for excavator use
Oct 07, 2021 · In an excavator, when the operator uses the joystick for fast and light movements, the full pump flow would be needed in conventional systems. This is exactly the effect that rod-to-head regeneration avoids and it eliminates the need for high pump flow. Section view of the valve when the excavator bucket is being used for clearing.
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Excavator Main Hydraulic Pump Receiving Pressure & Flow
Nov 07, 2016 · All brand new excavator main hydraulic pumps from His Way Manufacturing undergo a four-stage outlet pressure & flow rate test. All pumps are tested beyond OE
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China Excavator Hydraulic Control Valve, Excavator
China Excavator Hydraulic Control Valve manufacturers - Select 2021 high quality Excavator Hydraulic Control Valve products in best price from certified Chinese Excavator, Used Excavator suppliers, wholesalers and factory on Made-in-China.com
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320C Excavator Hydraulic System – Main Control Valve | CAT
Main control valve (6) is located in the hydraulic system between the main pumps and actuators (cylinders and motors). Depending on the machine operation, the oil flow from right pump (43), left pump (41) and pilot pump (42) to the hydraulic circuits are controlled by the operation of each component in the main control valve.
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Pilot Control Valves for Excavator
This series of pilot valves is mainly used for the control oil line of a hydraulic system and enable control oil with low flow and pressure to control the output pressure of pilot oil so as to meet the requirement on working conditions of the system. The product can be adopted to control multiway valves and be widely applied to engineering machines like excavator.
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DIVERTER VALVES - Hydraulic Controls
Flow Pressure (bar) (l/min) DF10/3 Spool A(B) (psi) 200 100 1020 30(US gpm) 0 5 10 15 20 0 204060 80 Flow (bar) (l/min) DF5/3 Spool A Spool B 200 100 5 10 15 Hydraulic circuit A P 1 2 B Spool type A Spool type B B A P 1 2 B 3--way It's possible to obtain 2--way diverter valve plugging port A or B. Performance data Pressure drop versus flow: P
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CONTROL VALVE SECTION, SWING FLOW REGULATION - MINI
control valve section, swing flow regulation - mini crawler excavator case 28 - case mini-excavator (3/94-12/00) 07 hydraulic system control valve section, swing flow regulation | 777parts
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Hydraulic Flow Testing a Hydraulic Hammer | Breaker in the
Jul 19, 2019 · Flow Testing can quickly diagnose if there are issues with the machine's hydraulic pump(s), regulator valve, shutoff valve, or even the operator control panel. With hydraulic fluid flow rate/pressure, there is typically an acceptable minimum and maximum range provided by the hydraulic hammer manufacturer.
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TROUBLESHOOTING FOR RELIEF VALVES USED IN …
kind of valve provides low damping during upward movement of the relief valve arbor [2]. Pressure relief valves used in hydraulic systems are spring-loaded valves designed to open and relieve excess pressure, then immediately close, preventing any loss of flow of fluid after normal conditions have been renovated [3].
Get a quoteHeavy Equipment Valves for John Deere Excavator for …
HCT Premium Joystick integrates seamlessly into onboard Monitor for Flow Setting, Function Select and 2 Pump Flow. Pressure select options available on select machines. PEDAL VALVES This valve bolts right into the excavator cab floors. It is extremely durable, and features a mechanical safety lock that converts it to a foot rest when not in use.
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Check Valves, Flow Control and Priority Flow Control Valves
Sun flow control valves provide flow modulation for control of metering and flow regulation in a variety of forms: Two port cartridges for check and flow control valves. placed ahead of an actuator or control device, these valves act Three port cartridges for priority flow control valves.
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