YDF06-00 Threaded Cartridge Valve

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4 year

Product details

YDF06-00 Threaded Cartridge Valve（YDF06-00型螺纹插装液控单向阀）

1. Product Overview

YDF06-00 is a poppet-type pilot-operated check threaded cartridge valve (hydraulic lock) with standard 06-size installation cavity. It permits free one-way oil inflow under normal conditions and tightly blocks reverse flow; dedicated pilot pressure input can open the valve reversely for oil return. The screw-in compact structure fits integrated valve blocks perfectly, widely used for cylinder load holding, anti-fall locking in mini construction machinery, portable hydraulic fixtures, agricultural machinery and small hydraulic stations。

YDF06-00 Threaded Cartridge Valve is a compact and reliable Hydraulic valve. As a screw-in CARTRIDGE VALVE, it serves as an essential control component inside the hydraulic system. This threaded CARTRIDGE VALVE can be directly installed into integrated manifold blocks, eliminating complicated external piping and making the whole hydraulic system more compact and neat. This Hydraulic valve ensures stable oil circuit control to satisfy diverse operating demands of the hydraulic system.

2. Core Technical Specifications

Parameter Specification

Mounting Size Standard 06 threaded cartridge cavity

Rated Working Pressure 21 MPa nominal, peak 31.5 MPa

Max Adapted Flow 25 L/min

Pilot Ratio ~2.5:1 standard

Internal Leakage ≤0.3 mL/min @21 MPa (low leak poppet seal)

Seal Material Nitrile rubber (NBR)

Recommended Fluid ISO VG32/VG46 anti-wear mineral hydraulic oil

Operating Temperature -30℃ ~ 100℃

Installation Direct screw-in mounting for standard 06 manifolds

3. Working Principle

1. Free forward flow: Oil pushes the poppet against spring force to flow into the actuator chamber normally; flow stops, spring + load pressure press the poppet to seal the seat, locking cylinder position without drifting.

2. Pilot reverse opening: When pilot pressure is supplied to the control port, the plunger overcomes spring/load force to pry open the poppet, allowing oil to flow backward for cylinder retraction.

Hardened poppet seat minimizes internal leakage for long stable load holding。

4. Key Advantages

1. Compact screw-in layout saves manifold space for modular small hydraulic circuits

2. Ultra-low internal leakage prevents accidental cylinder sinking for lifting/clamping scenarios

3. Hardened valve core resists vibration & abrasion, suitable for harsh construction/farm sites

4. Universal 06-size cavity interchangeable with mainstream brands for easy replacement

5. Aging-resistant NBR seals extend service life, simplify on-site maintenance

5. Typical Applications

- Anti-drop load locking for small hydraulic lifting cylinders

- Clamp pressure retention for portable hydraulic tooling & jigs

- Auxiliary circuit safety lock for mini excavators, loaders and farm machinery

- Hydraulic station two-way load holding protection

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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