Hydraulic line repair data

Hitachi EX300LC Attachments – Lock Valve Hose List

Coverage details
Hoses
2 records
Full specifications
2 records
Systems
1 systems
Length range
1,200–1,500 mm

Current system

Find a hose in this system

Use the number on the diagram, a part number, connection point, length, hose size, or fitting.

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Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 11

4239726

Installation route: Left boom-cylinder lock valve → right boom-cylinder lock valveOriginal Chinese: 左大臂油缸锁止阀~右大臂油缸锁止阀

Length
1,500 mm
Specification
DN6;2SN-4;34.5MPa
Left fitting
美制内螺纹37°内锥
Right fitting
美制内螺纹37°内锥
View full repair specifications

Diagram Pipe No. 11

4226384

Installation route: Left boom-cylinder lock valve → right boom-cylinder lock valveOriginal Chinese: 左大臂油缸锁止阀~右大臂油缸锁止阀

Length
1,200 mm
Specification
DN6;2SN-4;34.5MPa
Left fitting
美制内螺纹37°内锥
Right fitting
美制内螺纹37°内锥
View full repair specifications

Diagram Pipe No. 14

4231274

Installation route: 右大臂油缸锁止阀~分配阀下

Length
2,400 mm
Specification
DN10;1SN-6;7Mpa
Left fitting
45°美制内螺纹37°内锥
Right fitting
45°美制内螺纹37°内锥
View full repair specifications

Based on current published data

Common Repair Questions

Questions appear only when a published record or linked PDF page provides the answer.

How many hoses are currently listed for Hitachi EX300LC Attachments – Lock Valve?

There are 2 published records. 2 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Hitachi EX300LC Attachments – Lock Valve?

Based on published records with valid lengths, the range is 1,200–1,500 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi EX300LC Attachments – Lock Valve?

The most frequent raw specifications in the current published records are: DN6;2SN-4;34.5MPa (2 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi EX300LC Attachments – Lock Valve?

Each record keeps the left and right fitting descriptions separate. Current examples: 4239726: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4226384: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Hitachi EX300LC Attachments – Lock Valve hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 11 (4239726), Pipe No. 11 (4226384). Open a record to compare its installation position with the linked manual page.

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