YF08-00 Threaded Cartridge Valve
1. Product Overview
YF08-00 is a standard 08-size threaded cartridge relief valve, designed for modular integrated hydraulic manifold installation. It adopts screw-in compact structure to save valve block layout space, mainly used for system overload pressure limiting and pressure stabilization protection. Widely applied in mini excavators, portable hydraulic clamping jigs, agricultural machinery, small hydraulic power packs and other compact hydraulic loops to avoid component damage caused by pressure surge.
YF08-00 Threaded Cartridge Valve is a direct-acting pressure control Hydraulic valve. It is a screw-in CARTRIDGE VALVE, playing a critical safety and pressure regulating role in the hydraulic system. This threaded CARTRIDGE VALVE can be screwed directly into manifold blocks, removing cumbersome external pipelines. It effectively optimizes layout and makes the whole hydraulic system compact and neat. As a safety relief component, this Hydraulic valve limits peak pressure and prevents overload damage to the hydraulic system.
2. Core Technical Specifications
Parameter Specification
Mounting Size Standard 08 threaded cartridge cavity
Nominal Working Pressure 21 MPa, peak withstand pressure 25 MPa
Max Adapted Flow 30 L/min
Adjustable Pressure Range 3–21 MPa (adjustable via top screw)
Seal Material Nitrile rubber (NBR, oil-resistant & anti-aging)
Compatible Fluid ISO VG32 / VG46 anti-wear mineral hydraulic oil
Operating Temperature -10℃ ~ 80℃
Installation Mode Direct screw-in mounting for standard 08 manifolds
3. Working Principle
Under normal working conditions, the poppet is pressed against the sealing seat by preset spring force to keep the overflow passage closed. When inlet hydraulic pressure exceeds the spring calibrated threshold, fluid pushes the poppet open to divert excess flow to the oil tank, limiting the maximum pressure of the whole circuit. When system pressure drops below the set value, the spring automatically resets the poppet to cut off overflow, maintaining stable loop pressure. The precision poppet structure effectively reduces internal leakage for reliable long-term pressure control.
4. Key Advantages
1. Mini threaded structure occupies little space, convenient for modular stacking of compact hydraulic circuits
2. External adjustment design allows quick on-site pressure tuning to fit different load scenarios
3. Hardened valve core has strong vibration and wear resistance, adapting to harsh outdoor construction and farm operation environments
4. Universal 08-size cavity matches mainstream brands for easy replacement and maintenance
5. Durable NBR seals extend service life, lower daily maintenance frequency and operating cost
5. Typical Application Scenarios
- Overload protection for small hydraulic fixtures, jacking tool circuits
- Auxiliary oil circuit pressure limiting for mini excavators, compact loaders and agricultural equipment
- Pressure stabilization for manual / small electric portable hydraulic stations
- Peak pressure suppression for small cylinder drive loops
