DHF08‑231‑00 Threaded Cartridge Valve
4 week ago
Product details
DHF08‑228‑00 Bi‑directional Normally‑Closed Threaded Cartridge Valve
Product Overview
DHF08‑228‑00 is a 08‑size bi‑directional normally‑closed poppet‑type screw‑in cartridge solenoid valve for hydraulic system. Without distinguishing between inlet and outlet ports, it blocks oil flow in both directions when de‑energized. Upon energization, both‑way oil passage is opened for free bi‑directional flow. Installed into standard manifold block cavity, widely used for load‑holding, locking and safety protection on hydraulic power units, lifting platforms, scissor lifts and mobile machinery.
DHF08‑231‑00 Threaded Cartridge Valve is an electromagnetic switching Hydraulic valve. As a screw-in CARTRIDGE VALVE, it acts as a vital automatic control component in the hydraulic system. This threaded CARTRIDGE VALVE can be directly installed into integrated manifold blocks, eliminating messy external pipelines and simplifying layout to make the entire hydraulic system compact and concise. This Hydraulic valve executes rapid switchover of hydraulic oil circuits according to electrical signals, delivering stable flow control and satisfying automatic control requirements for various industrial equipment and mobile machinery hydraulic system.
Main Technical Parameters
Item Specification
Model DHF08‑228‑00
Valve cavity size 08 series standard threaded cartridge cavity
Function type Bi‑directional Normally‑Closed (2‑way shut‑off when de‑energized)
Max working pressure 250 bar
Rated flow 40‑45 L/min
Coil voltage DC12V / DC24V / AC110V / AC220V optional
Installation form Screw‑in threaded cartridge, fitted inside manifold block
Seal material NBR O‑ring, FKM for high‑temperature option
Hydraulic fluid Anti‑wear hydraulic oil ISO‑VG32 / VG46
Operating temperature ‑10℃ ~ +70℃
Filtration requirement ≤25 μm
Internal leakage Very low poppet‑type metal‑to‑metal sealing
Working Principle
1. Power‑off status: Spring force pushes the poppet spool to the closed position. Both oil directions are completely blocked, no oil flow either way, realizing bidirectional load‑locking function, no distinction between port A and port B.
2. Power‑on status: Electromagnetic force overcomes spring preload and drives spool displacement. Both‑direction flow channel opens; hydraulic oil can flow freely from port A to B or port B to A.
3. Once power supply is cut off, spring automatically resets the poppet, and the valve returns to bi‑directional shut‑off condition.
Core Advantages
1. Bi‑directional shut‑off design, no inlet‑outlet direction restriction for installation. Excellent zero‑leakage load‑holding performance when power is off.
2. Compact screw‑in cartridge structure, embedded installation inside manifold block, reduces external piping and saves space.
3. Poppet‑type metal‑contact sealing structure, extremely low internal leakage, stable performance under high‑pressure holding condition.
4. Replaceable coil, convenient field maintenance without removing whole valve from manifold block.
5. Matches universal industry‑standard 08‑size cartridge cavity, good interchangeability for aftermarket replacement.
Typical Application
Hydraulic power packs, scissor lifting tables, aerial work platforms, lifting machinery, fixture hydraulic circuits, special mobile equipment. Mainly used for bidirectional load locking, anti‑drift and safety cut‑off protection.
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