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No. 7001 Zhongchun Road, Minhang District, Shanghai
Junling Industrial Equipment (Shanghai) Co., Ltd
No. 7001 Zhongchun Road, Minhang District, Shanghai
PARKER Electromagnetic Directional Valve D1VW020BVTW from the United States, The PARKER VP120 series is a plate type pressure compensation load sensitive directional control valve used for mobile machinery. PARKER hydraulic valves can help improve the performance of industrial and mobile mechanical systems. We provide innovative components and complete systems to customers around the world, while working with them to improve their productivity and profitability. PARKER seat valve type two-way solenoid valve, hydraulic solenoid valve uses electrical control to switch the position of the slide valve or seat valve core inside the valve, and guides the hydraulic fluid flow into and out of the actuator. This type of valve can be two-way, three-way, four-way, or even four-way, and all use one or two electromagnets for directional control. PARKER's new compact D1FC (NG06)/D3FC (NG10) represents technology that provides optimized processing speed and high dynamics and flow for various applications. You can choose to use the EtherCAT interface to achieve high data speed and short cycle time. Parker offers a wide range of standard load and motor control valves, typically known as balance valves, with multiple options available for working pressures up to 6000 psi (420 bar) and flow rates up to 90 gpm (350 Lpm.). PARKER D1VW is a directional valve with NG06 (CETOP 03) installation specifications, which can achieve high maximum flow switching performance with minimal pressure drop. There are options for soft switching or ATEX and IECEx certified electromagnets to choose from. PARKER's VPL series is a stacked multi piece load sensitive pressure compensation directional valve used in construction machinery such as aerial work machines, fire trucks, excavator drilling rigs, drilling rigs, cutting machines, forklifts, flatbed trucks, and harvesters. PARKER pilot operated relief valves are designed for continuous operation in application systems. Due to its good stability and low pressure rise, a pilot operated relief valve is a wise choice for setting hydraulic system pressure, with low pressure rise and low working noise. The DFplus control valve D1FP for direct action operation in PARKER NG06 (CETOP 03) and D3FP in NG10 (CETOP 05) meet high requirements in terms of dynamics combined with high flow (optional EtherCAT interface). PARKER ball bearing rotary tube joint is used for connecting hoses between fixed points and rotating, swinging, and moving machine components to prevent hose twisting and excessively small bending radii. The feature of the PARKER check valve RHD38ZSCF in the United States is that all joints are equipped with elastic seals. It ensures leak free operation without the need for re tightening. EO-2 is designed for metric pipes according to DIN 3861 and DIN 2353 (represented today by the international standard ISO 8434-1). Elastic sealing ensures the airtightness of the pipe joint. It is located between the inner cone of the accessory body and the surface of the pipe, thus blocking possible leakage paths. The sealing effect is supported by pressure, making EO-2 accessories suitable for high-pressure applications. Static compression also eliminates the inhalation of air into the fluid system under vacuum conditions. High corrosion resistance: Surface treatment without Cr (VI) has an average corrosion resistance of over 500 hours to white rust. High pressure: EO-2 can be used for applications up to 800 bar (S series) and 500 bar (L series). EO-2 exceeds DIN/ISO requirements and ensures a design factor of 4 times. EO-LUB: Due to special treatment of larger nuts (25S/28L and larger), the tightening torque of EO-2 accessories has been reduced by 25%. This makes assembly easier and prevents insufficient assembly. Sealing ability: The elastic sealing component constitutes the main sealing element, ensuring a leak free seal. Even low viscosity media such as water or gas are sealed. Therefore, the hydraulic system will not sweat at the parts.
The reasons and troubleshooting methods for the increased leakage inside the PARKER check valve are as follows: This fault refers to the situation where when the pressure oil enters the Litian check valve in reverse, the cone valve core or steel ball of the check valve cannot tightly seal the oil, resulting in leakage, and some oil flows out from the inlet. This fault is more likely to occur under low pressure conditions or the situation is more severe compared to high-pressure environments.
PARKER check valve After prolonged use, directional valves are prone to wear on the valve core sealing ring, damage to the valve stem and seat, resulting in gas leakage inside the valve, slow valve movement, or inability to reverse direction normally. At this point, the sealing ring, valve stem, and valve seat should be replaced, or the directional valve should be replaced with a new one. The contact line or surface between the valve core and the valve seat is not tightly fitted. The reasons for non tight fit include: dirt sticking to the contact area between the valve core and the valve seat, wear on the contact line or surface with the valve seat due to prolonged use, deep grooves or straight line marks.
PARKER Electromagnetic Directional Valve D1VW020BVTW from the United States, PARKER relief valve is a hydraulic pressure control valve that mainly plays a role in constant pressure relief, pressure stabilization, system unloading, and safety protection in hydraulic equipment. Constant pressure overflow effect: In the quantitative pump throttling regulation system, the quantitative pump provides a constant flow rate. When the system pressure increases, it will reduce the flow demand. At this point, the overflow valve opens, allowing excess flow to overflow back into the oil tank, ensuring a constant inlet pressure of the overflow valve, i.e. a constant pump outlet pressure (the valve port often opens with pressure fluctuations). Voltage stabilizing effect: The relief valve is connected in series on the return oil path, generating back pressure and increasing the stability of moving parts. System unloading function: Connect a low flow solenoid valve in series with the remote control port of the overflow valve. When the solenoid is energized, the remote control port of the overflow valve is connected to the oil tank, and the hydraulic pump is unloaded. The overflow valve is currently used as an unloading valve. Safety protection function: When the system is working normally, the valve is closed. Only when the load exceeds the specified limit (system pressure exceeds the set pressure), the overflow valve is opened for overload protection, so that the system pressure no longer increases (usually the set pressure of the overflow valve is 10% to 20% higher than the system working pressure).
Junling Industrial Equipment (Shanghai) Co., Ltd
Technical support brands: KRACHT (flow meter, indicator, gear pump) from Germany, VSE (flow meter, display) from Germany, TEMPOSONICS sensors from the United States, WOERNER (distributor, lubrication pump, level switch) from Germany
German advantage brands: MEISTER (flow meters, sensors), KOBOLD (sensors, level gauges, flow meters), FEIN's electric tools, BURKERT (flow meters, solenoid valves)
Domestic spot brands: ATOS (proportional valve, solenoid valve, amplifier, cylinder), REXROTH (hydraulic valve, pump, sensor), PARKER (proportional valve, sensor, hydraulic motor), HYDAC (sensor, filter, filter element, valve), SUN (plug-in valve, flow valve, valve block)
I have 10 years of experience in procurement channels and can consult and compare unfamiliar European brands.