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China, Chinese High Pressure Dual Pilot Check Valve for Cylinders Cranes Press Machines1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Hydraulic PartsHydraulic MotorDual Pilot ValveLoad-Holding Valve
Shanghai Sgeil Trading Co., Ltd.
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Product Description Brief Introduction Why Choose DUAL PILOT CHECK VALVE?Bidirectional ControlAllows flow in both directions when pilot pressure is applied (unlike standard check valves).Leak-Free PerformancePrevents drifting/creeping under load with tight sealing (ideal for vertical/hanging loads).High-Pressure StabilityHandles extreme pressures (up to 5000+ PSI in some models) without bypass.Product DescriptionThis valve is a pilot to open check valve. It has a non-sealed pilot, a steel seat, and is non-vented. It allows free flow from the valve (port 2) to the load (port 1) and blocks flow in the opposite direction. Pressure at the pilot (port 3) will open the valve from port 1 to port 2. Pilot pressure needed at port 3 to open the valve is directly proportional to the load pressure at port 1. Pressure at port 2 directly opposes pilot pressure. Counterbalance valves with pilot assist are meant to control an overrunning load. The check valve allows free flow from the directional valve (port 2) to the load (port 1) while a direct-acting, pilot-assisted relief valve controls flow from port 1 to port 2. Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio. Other names for this valve include motion control valve and over center valve. Features? Counterbalance valves should be set at least 1.3 times the maximum load induced pressure.? Turn adjustment clockwise to decrease setting and release load.? Full clockwise setting is less than 200 psi (14 bar).? Backpressure at port 2 adds to the effective relief setting at a ratio of 1 plus the pilot ratio times the backpressure.? Two check valve cracking pressures are available. Use the 25 psi (1,7 bar) check unless actuator cavitation is a concern.? This valve does not have positive seals on the pilot section and will pass up to 2 in3/min.@1000 psi (32 cc/min.@70 bar ) between port 2 and port 3. This is a consideration in master-slave circuits and in the leak testing of valve-cylinder assemblies.? Provides hose break protection, prevents loads from drifting and positively locks pressurized loads.? Standard unsealed pilot allows air trapped in the pilot line to be purged from the circuit.? Extremely low leakage. The seat and poppet are heat treated for long life. If the load drifts due to the valve, the seat has probably been damaged by contamination and the valve should be replaced.? Optional external porting out of the hex end of the cartridge is available for external piloting. In this configuration, port 3 is blocked. See Control options E, and P.? Pilot-to-open check cartridges are locking valves, not motion control valves. For motion control.? This 3 port pilot-to-open check valve and 3 port counterbalance valves are physically interchangeable (i.e. same cavities, same flow path for a given frame size). However, cartridge extension dimensions from the mounting surface may vary.? For models with manual load release control option, turn load release clockwise to release load.? Stainless steel cartridge options P or W are intended for use within corrosive environments with all external components manufactured in stainless steel or titanium. Internal working components remain the same as the standard valves.? Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.Product Applications1.Construction machinery field:Widely applied in equipment such as excavators, loaders, and cranes. For example, the hydraulic circuit of the boom, dipper, and bucket of an excavator can prevent hydraulic oil from flowing back, ensuring that the working device remains stable when stopped, avoiding accidental movement of components due to gravity and other factors, and enhancing operational safety and accuracy. In the case of a crane during the lifting of heavy objects, the double pilot check valve can ensure the stability of the hydraulic system and prevent the heavy object from falling out of control.2.Industrial automated production lines:Used in the hydraulic systems of automated equipment, such as the joint drive of mechanical hands. It enables the mechanical hand to maintain a stable hydraulic circuit during the conversion of actions such as grasping, transporting, and placing workpieces, accurately executing instructions, and avoiding action deviations or pauses caused by hydraulic oil backflow, ensuring the efficient and stable operation of the production line.3.Aerospace field:Plays a role in the landing gear retraction and extension systems of aircraft and some hydraulic assisted control systems. For example, after the landing gear is lowered, the double pilot check valve can prevent hydraulic oil from flowing back, ensuring the reliable support of the landing gear for the aircraft weight; in the flight control system, it maintains the stability of hydraulic pressure, ensuring the sensitivity and reliability of the pilot's operation. Company ProfileBesdrill is a highly influential foreign trade supplier in the field of international mineral exploration equipment. With years of in-depth cultivation in the industry, the company has established a wide and stable global business network, maintaining close cooperation with many high-quality equipment manufacturers, and is committed to providing high-quality and high-performance mineral exploration drilling rig products for global customers.Our Advantages1. Strict product screeningBesdrill has an extremely strict set of product screening standards and processes. For the manufacturers of that cooperate, an assessment will be conducted from multiple aspects such as R&D capabilities, production processes, and quality control systems to ensure that the supplied drilling RIGS can reach international advanced levels in key performance indicators such as drilling diameter, depth, and durability.2. A complete logistics and after-sales service systemWe have established long-term cooperative relationships with many internationally renowned logistics enterprises. We can select the most suitable transportation method based on the customer's location to ensure the safe and rapid delivery of drilling RIGS to the customers. At the same time, a complete after-sales service system has been established, providing regular maintenance guidance for equipment, supply of spare parts and other services to extend the service life of equipment and reduce the operating costs of customers.3. Rich industry experience and resourcesOver the years of foreign trade operation, I have accumulated a wealth of experience in cooperating with clients from different countries and regions, and am familiar with the policies, regulations, market dynamics and technical standards in the field of mineral exploration around the world. This enables the company to better understand customer needs and, leveraging its own resource advantages, help customers solve various problems encountered in the processes of equipment procurement, customs clearance, and usage.There are many product specifications. The price is subject to the actual situation. Other Product RecommendWater Well Drilling Rig Truck-mounted Water Well Drilling RigCrawler Water Well Drilling RigTrailer Water Well Drilling RigMud Pump GD Series Mud PumpW-446 Series Mud PumpHW-440 Series Mup Pump BW-150 Series Mud PumpBW-250 Series Mud PumpBW-320 Series Mud PumpDrilling Equipment AccessoriesDrill BitDrill Pipe Hydralic Power Tong
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