Hydraulic line repair data

Hitachi EX550LC Control Valve Hose List

Hitachi EX550LC Control Valve currently has 17 published hose records for checking length, hose specification, left and right fittings, part number, and diagram pipe number.

Hoses: 17 records
Full specifications: 17 records
Systems: 1 systems
Length range: 420–4,850 mm

Hose repair details

Hose Length and Fitting List

Diagram Pipe No. 27

4367001

Installation route: 分配阀右~液压油箱

Length: 1,550 mm
Specification: DN10;1SN-6;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 6

4343390

Installation route: 分配阀上~电磁阀(液压油箱)

Length: 1,500 mm
Specification: DN6;2层纤维-4;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 45°美制内螺纹37°内锥

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Diagram Pipe No. 44

4366735

Installation route: 分配阀下~过渡阀块(分配阀)

Length: 500 mm
Specification: DN10;1SN-6;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 17

4366995

Installation route: 分配阀上~电磁阀(液压油箱)

Length: 1,200 mm
Specification: DN6;1SN-4;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 19

4343414

Installation route: 分配阀上左~进回油阀

Length: 4,850 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 28

4367002

Installation route: 分配阀左~液压油箱

Length: 2,000 mm
Specification: DN10;1SN-6;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 44

4379282

Installation route: 分配阀下~过渡阀块(分配阀)

Length: 750 mm
Specification: DN10;1SN-6;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 44

4317660

Installation route: 分配阀下~过渡阀块(分配阀)

Length: 500 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 56

4343389

Installation route: 分配阀右~电磁阀(分配阀)

Length: 1,050 mm
Specification: DN6;2层纤维-4;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 12

4343408

Installation route: 分配阀上右~过渡阀块(手柄)

Length: 2,100 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 51

4323284

Installation route: 分配阀前~回转马达(左)

Length: 420 mm
Specification: DN19;1SN-12;10.5MPa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: 90° elbow, American female thread, flat-face sealOriginal Chinese: 90°美制内螺纹平面密封

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Diagram Pipe No. 6

4343422

Installation route: 分配阀左~回转马达(右)

Length: 1,350 mm
Specification: DN19;4SH-12;42MPa
Left fitting: American female thread, flat-face sealOriginal Chinese: 美制内螺纹平面密封
Right fitting: 90° light-series flangeOriginal Chinese: 90°法兰-轻型

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Diagram Pipe No. 15

4343391

Installation route: 分配阀右~液压油箱

Length: 2,000 mm
Specification: DN6;2层纤维-4;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 18

4332349

Installation route: 分配阀上~液压油箱

Length: 500 mm
Specification: DN6;2层纤维-4;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 42

4350174

Installation route: 分配阀上右~分配阀下

Length: 1,000 mm
Specification: DN10;1层纤维-6;14MPa
Left fitting: 美制内螺纹37°内锥
Right fitting: 90°美制内螺纹37°内锥

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Diagram Pipe No. 12

4367019

Installation route: 分配阀上右~过渡阀块(手柄)

Length: 2,100 mm
Specification: DN10;1SN-6;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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Diagram Pipe No. 50

4367008

Installation route: 分配阀上左~过渡阀块(分配阀)

Length: 1,000 mm
Specification: DN10;1SN-6;7Mpa
Left fitting: 美制内螺纹37°内锥
Right fitting: 美制内螺纹37°内锥

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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 EX550LC Control Valve?

There are 17 published records. 17 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Hitachi EX550LC Control Valve?

Based on published records with valid lengths, the range is 420–4,850 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Hitachi EX550LC Control Valve?

The most frequent raw specifications in the current published records are: DN10;1SN-6;7Mpa (6 records), DN10;1层纤维-6;14MPa (4 records), DN6;2层纤维-4;14MPa (4 records), DN19;1SN-12;10.5MPa (1 records), DN19;4SH-12;42MPa (1 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Hitachi EX550LC Control Valve?

Each record keeps the left and right fitting descriptions separate. Current examples: 4367001: left 美制内螺纹37°内锥; right 美制内螺纹37°内锥; 4343390: left 美制内螺纹37°内锥; right 45°美制内螺纹37°内锥; 4366735: 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 EX550LC Control Valve hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 27 (4367001), Pipe No. 6 (4343390), Pipe No. 44 (4366735), Pipe No. 17 (4366995). Open a record to compare its installation position with the linked manual page.