Metric Compression Straight Bulkhead - Centralized Grease Line Fittings

Our Metric Compression Straight Bulkhead is the industry standard for distributing lubricants safely through high-frequency automatic lubrication and centralized grease systems. Engineered with an elongated center body and a dedicated heavy-duty panel locknut, this bulkhead union connects two separate metric lines of the identical outer diameter across structural plates, machine enclosures, or firewall barriers. By maintaining a true inline fluid path through physical partitions, it eliminates sharp kinks, prevents line abrasion, and coordinates secure grease delivery to progressive distribution blocks.

As a high-volume B2B manufacturer and global OEM supplier, we construct our grease line compression fittings on automated multi-axis precision lathes to guarantee flawless internal boring and exact concentricity profiles across both entry ports. Every production lot is subject to rigorous quality control auditing to ensure absolute structural stability under the severe, pulsing pressures common in automated lubrication networks.

Core Technical Blueprint & Symmetric Engineering

• Optimized for LL Series Networks: Purpose-built for the Extra Light (LL) Series footprint, this bulkhead union handles operating thresholds up to 100 bar, aligning seamlessly with the pressure boundaries of commercial grease lines (machined for small-diameter tubing from 4mm to 12mm). Its minimized mass and extended thread section ensure clean, flame-free mounting inside crowded machinery panels and chassis channels.

• Symmetric Equal Bulkhead Design: Both inline entry points feature identical 24° internal cone tube seats machined to the same metric specifications. This complete symmetry eliminates the need for expensive adapters or mixed connectors, allowing engineers to pass fluid lines cleanly through partitions using a single, standardized component.

  • Identical Metric Connections: Integrates directly with standard metric lubrication tubing loops globally, ensuring an exact, localized fit without line modification.

Application & Compliance Standards

• Dual Bite Sealing Integrity: Tightening the two compression nuts drives the specialized cutting rings forward into the body seats, forcing them to bite cleanly into the exterior surface of the copper, steel, or high-pressure nylon tubing, while the primary counter-nut locks the assembly rigidly against the panel. This balanced mechanical connection creates an unyielding seal that easily withstands high industrial vibrations, continuous machine cycling, and pressure shocks.

• Global Interchangeability: Manufactured in strict conformity with ISO 8434-1 and DIN 2353 extra-light guidelines. These straight bulkhead unions offer complete, drop-in compatibility with leading international fluid-handling brands. They serve as the trusted default choice for commercial vehicle chassis, wind turbine bearings, progressive distribution blocks, heavy mining machinery, and automated industrial assembly systems.