Hydraulic Valves for highly viscous lubricants

In industrial lubrication and dispensing technology, hydraulic valves perform the central task of directional control and pressure regulation of the medium. The processing of high-viscosity lubricants, such as greases and oils, places special demands on the internal valve geometry and shifting forces. ABNOX hydraulic valves are optimized for use in high-pressure systems and guarantee reliable switching as well as absolute tightness to ensure a controlled media flow within the entire tribological chain.

When controlling greases (up to NLGI class 3), high flow resistance occurs. Hydraulic valves must therefore feature flow-optimized cross-sections to minimize pressure loss within the valve body. An exact switching process is crucial to prevent uncontrolled after-flow of the medium and to enable precise cycling in automated dispensing processes. Mechanical resilience against pressure peaks and abrasive particles in the lubricant is a prerequisite for a long service life.
 

Product Specification

Manufactured from high-strength materials, designed for the maximum operating pressures of high-pressure hydraulics. The valves are designed as poppet or spool valves, with poppet valve technology guaranteeing a hermetic seal in the closed state. This prevents a creeping pressure drop in the system. The compact design allows for direct integration into complex control blocks or mounting immediately upstream of the application organ. Various actuation types (manual, pneumatic, or electromagnetic) are available to ensure seamless integration into the plant control system.

• Leak-Free Sealing Systems: 
  Use of specialized high-pressure seals (e.g., made of FKM or NBR) that exhibit high chemical resistance to additives in industrial lubricants.
• High Switching Performance: 
  The internal mechanics are designed for high cycle rates, which lowers maintenance costs by minimizing wear.
• Hardened Functional Parts: 
  Valve seats and control pistons are precision-ground and hardened to provide constant switching precision even with abrasive media.
• Modular Design: 
  Enables rapid replacement of wear parts and reduces downtime of the dispensing system during maintenance intervals.

The use of ABNOX hydraulic valves ensures the integrity of the entire dispensing system. Precise control of media flows prevents faulty batches and increases the repeatability of dispensing cycles. The robust design protects downstream components from uncontrolled pressure surges and stabilizes the operating pressure at the application point. Consequently, these valves form the technological basis for the reliable handling of high-viscosity media under extreme industrial conditions.