Precision 6061 Hydraulic Diverter Valve Block with Burr-Free Cross-Drilled Ports

We successfully manufactured a precision 6061 aluminum hydraulic diverter valve block for a hydraulic automation equipment application. This compact fluid distribution manifold features multiple intersecting drilled passages that direct hydraulic flow to various system components — presenting the critical manufacturing challenge of burr-free cross-drilled port intersections, where even microscopic burrs can cause flow restriction, contamination, and valve malfunction. Through optimized drilling sequences and high-pressure water deburring, we delivered clean, burr-free valve blocks ensuring reliable hydraulic system performance.

Project Overview

Key Technical Highlights

• Cross-Drilled Port No-Burr Achievement: Implemented high-pressure water deburring for all cross-drilled port intersections — water jets programmed to precisely reach each junction, effectively removing burrs without damaging port walls, altering dimensions, or introducing contamination . This ensures unrestricted hydraulic flow and prevents particle-induced valve wear.
• Process Innovation:
  • Optimized Drilling Sequence: Cross-drilled ports sequenced to minimize burr formation at intersections, with controlled entry/exit strategies reducing the initial burr size before deburring.
  • High-Pressure Water Deburring: CNC-programmed high-pressure water jets with adjustable pressure and targeted nozzle angles remove burrs at all intersections simultaneously — achieving consistent, repeatable results across all production units .
  • Single-Setup Turn-Mill: Combined turning and milling operations ensure precise port positioning and geometric alignment between all fluid passages and mounting features.
  • Post-Deburring Verification: Borescope inspection and flow testing confirm complete burr removal in all internal passages.
• Surface Quality:
  • Internal port surfaces maintain Ra≤1.6μm finish for smooth fluid flow.
  • All cross-drilled intersections verified burr-free through borescope inspection.

Quality Verification

Each component underwent comprehensive inspection using CMM measurement for port positional accuracy (±0.015mm) and dimensional tolerance (±0.015mm), supplemented by industrial borescope inspection for cross-port burr verification and flow testing to confirm unrestricted hydraulic passage.

Industry Applications

This solution demonstrates our expertise in precision fluid distribution component manufacturing, ideal for:
✓ Hydraulic diverter valve blocks ✓ Fluid distribution manifolds ✓ Automation hydraulic systems ✓ Mobile hydraulic equipment

Why Partner With Us?

• Proven expertise in cross-drilled port burr-free manufacturing for hydraulic applications
• Advanced high-pressure water deburring for internal intersections
• Precision port positioning for consistent fluid circuit performance
• 12+ years of precision manufacturing experience across fluid power and automation sectors