300AA000/02/06/16/41/42/46/61/62/82/81/85/A Hydraulic Solenoid Coil 300AA00100A 300AA00101A 300AA00041A

Ii. Core Technical Parameters (Authoritative Values)
Parameter item: Standard value: Remarks
Rated flow rate: 100L/min (nasal tip → nasal side) : Reference viscosity 24cSt, forward free flow
Maximum working pressure: 350bar (5000psi) : Bidirectional pressure resistance, suitable for high-voltage circuits
Valve opening pressure: approximately 0.2bar: Low pressure opening to reduce forward flow resistance
Rated pressure internal leakage: ≤0.15cc/min: 24cSt mineral oil static working condition
Compatible jack: T-162A: Standard plug-in size, highly versatile
Operating temperature: -20℃ to 100℃: Applicable range for NBR seals
Installation torque: 41-47Nm: Corresponding to the fastening requirements of the socket, preventing leakage/damage
Sealing material: Nitrile rubber (NBR) : Compatible with mineral-based hydraulic oil, prohibited for use in phosphate ester oilIii. Function and Role (Core Value of the Loop
One-way conduction: Only allows the hydraulic oil to flow from the tip of the nose to the side of the nose, preventing reverse flow, protecting the pump, cylinder and other components from reverse impact, and avoiding circuit failure.
Circuit pressure holding: Maintain the stability of branch pressure, prevent pressure relief caused by internal leakage, be compatible with accumulator and cylinder pressure holding circuits, and improve the positioning accuracy of actuating elements.
Loop isolation: Separate the high and low voltage areas of the system to avoid mutual interference, adapt to multi-loop composite systems, and enhance the overall operational stability.
Low resistance and high efficiency: The low-pressure valve opening design features low forward flow resistance, reducing system energy loss and meeting the efficient operation requirements of medium-flow circuits.

Iv. Product Attributes (Basic Positioning)
Product type: General-purpose floating cartridge check valve
Flow direction: Fixed nasal tip → free flow on the nasal side, not reverse
Structural form: Threaded insertion, compatible with T-162A standard socket
Core material: The valve core/valve sleeve is hardened, which is wear-resistant and fatigue-resistant. Sealed as NBR
Compatible medium: Mineral-based hydraulic oil, not suitable for phosphate ester synthetic oil
Core advantages: Strong adaptability to medium flow rates, low leakage, high pressure resistance, easy installation, and floating structure reduces the risk of jamming

V. Installation and Usage Precautions (Practical Operation Specifications)
Before installation, thoroughly clean the socket and the valve body. The oil cleanliness should reach NAS 1638 grade 9 or above to prevent impurities from getting stuck in the valve core and causing failure.
Tighten strictly to a torque of 41-47 nm. Over-tightening can damage the threads/seals, while under-tightening may cause leakage.
Clarify the installation direction: Oil enters from the tip of the nose and exits from the side of the nose. Installing it in reverse will cause the circuit function to completely fail.
NBR seals are not suitable for phosphate ester media. For high temperatures (> 100℃) or special media, fluororubber (FKM) seal models should be replaced.
Regularly check the internal leakage. When it exceeds 0.15cc/min, replace the sealing components in time to avoid unstable pressure in the circuit.
When disassembling, avoid damaging the nasal tip/nasal side sealing surface to prevent secondary leakage and extend the service life of the valve body.

Vi. Usage Scenarios and Compatible Models (Application Matching)
Application scenario: Compatible with different models
Anti-backflow at medium flow pump outlet: Main pump circuits for medium-sized excavators, loaders, and truck cranes
Large cylinder/accumulator pressure holding: hydraulic bending machines, injection molding machines, large die-casting machines
Multi-loop pressure isolation: Mining machinery, ship hydraulic systems, large machine tool hydraulic stations
Medium flow unidirectional control: auxiliary circuits for agricultural machinery and construction machinery, hydraulic lifting platforms

Vii. Complete Model Recommendations for the Same Series (Full Specification Coverage)
1. Different flow rates with the same socket (T-162A)
300AA00040A: 40L/min, installation torque 35-40Nm, suitable for small circuits
300AA00080A: 80L/min, installation torque 41-47Nm, suitable for medium flow rates
300AA00100A: 100L/min, installation torque 41-47Nm, mainstream for medium flow
300AA00120A: 120L/min, installation torque 41-47Nm, medium flow and large load
2. Different sealing configurations (100L/min, T-162A)
300AA00100B: Fluororubber (FKM) seal, high-temperature resistant (-20℃ to 150℃), suitable for synthetic oil/high-temperature working conditions
300AA00100C: Polyurethane seal, wear-resistant, suitable for high-viscosity/frequent reversing conditions
3. Reverse free flow (nasal side → nasal tip, T-162A)
300AD00100A: 100L/min, NBR seal, reverse free flow, suitable for special circuits
300AD00080A: 80L/min, NBR seal, reverse free flow, medium flow reverse control
300AD00040A: 40L/min, NBR seal, reverse free flow, small circuit reverse control