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Precision Pressure Compensation Flow Control Valve for Hydraulic Systems

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LKF model is a full range pressure compensating variable flow control. It is designed so that the orifice area varies as the lever is rotated. The outlet flow is smooth and constant regardless of the pressure on the control flow or excess flow ports. An adjustable ball spring relief valve allows for pressure compensated how up to the pressure setting on the relief valve. Relief valves are preset at 1500psi and filed adjustable from 750 to 3000psi.
Price: $ 1000
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Overview


The LKF 60 Pressure Compensation Flow Control Valve is a high-precision solution designed to maintain constant flow rates in hydraulic systems, ideal for applications requiring stable fluid delivery regardless of pressure fluctuations. Engineered with pressure compensation technology, this valve ensures consistent performance in machinery, automation, and industrial equipment.


Features


Precision Flow Control:

Maintains flow rate ±2% accuracy (ISO 6403) across pressure ranges 5-350 bar, with flow capacity 10-60 L/min, critical for precision hydraulic circuits.

Pressure compensator valve (pre-set 5 bar differential) automatically adjusts to upstream/downstream pressure changes, eliminating flow variations from load shocks.

Energy-Efficient Design:

Low pressure drop (≤1.5 bar at rated flow), reducing energy loss and heat generation, the energy consumption is 20% lower than traditional flow valves.

Pilot-operated design for smooth operation, with minimal hysteresis (≤1% of rated flow) in dynamic load scenarios.

Durable & Compact:

Anodized aluminum body (ISO 7599) and stainless steel internals, resisting corrosion (salt spray: 500 hours) and wear from particulate contamination (NAS 1638 Class 9).

Lightweight (1.2kg) and compact (100x80x60mm), fitting into tight hydraulic manifolds and mobile equipment.

Installation Flexibility:

Inline or panel mount (NPT/BSPP threads), compatible with both open and closed hydraulic systems, supporting direct integration with pumps and actuators.

Optional flow adjustment knob (lockable), enabling on-site calibration (flow range: 20-100% of rated capacity).


Application


Suited for precision hydraulic systems, the LKF 60 valve is used in:

Machine Tools: Maintains constant flow to hydraulic chucks and slides in CNC lathes, ensuring stable cutting forces (variation ≤1%).

Automation Systems: Controls flow to servo cylinders in pick-and-place robots, supporting high-precision positioning (repeatability ±0.1mm).

Printing Machinery: Ensures uniform ink pump flow in gravure and flexo printers, minimizing color variation (ΔE ≤1) in high-speed printing lines.

Medical Equipment: Regulates flow in hydraulic surgical tables and patient lifts, with biocompatible seals (FDA 21 CFR Part 177) for healthcare applications.


FAQ


Q: Can it handle bidirectional flow?

A: No, designed for unidirectional flow; reverse flow requires additional check valve installation.

Q: What is the response time to pressure changes?

A: ≤10ms for pressure fluctuations up to 50 bar, ensuring real-time flow stabilization in dynamic systems.

Q: Is it suitable for low-viscosity fluids?

A: Optimal for viscosity 15-100 cSt (ISO VG 22-100); consult factory for lower viscosity applications (e.g., water-based fluids).


型号Model 油口尺寸Oil Port 流量Flow (gpm) 公称压力(bar)
Standard Pressure
LKF-40-3/8NPT 3/8”-NPT 0-30L/min(0-8gpm) 210
LKF-60-1/2NPT 1/2”-NPT 0-60L/min(0-16gpm)
LKF-114-3/4NPT 3/4”-NPT 0-114L/min(0-30gpm)



Flow Control Valve for Hydraulic Systems



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