Hydraulic line repair data

Caterpillar CAT®231D Control Valve Hose List

Coverage details

Hoses: 3 records
Full specifications: 3 records
Systems: 1 systems
Length range: 610–1,330 mm

Current system

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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

8K-3220

Installation route: 分配阀上(4阀芯)~分配阀(3阀芯)

Length: 1,330 mm
Specification: DN32;4SP-20;35Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 15

3V-4332

Installation route: 回油铁管(分配阀)~安全阀(分配阀后)

Length: 610 mm
Specification: DN19;1SN-12;8.7Mpa
Left fitting: 美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 12

8K-3219

Installation route: 分配阀上(4阀芯)~分配阀(3阀芯)

Length: 1,310 mm
Specification: DN25;4SP-16;35Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: Heavy-series flangeOriginal Chinese: 法兰-重型

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Diagram Pipe No. 8

3T-1639

Installation route: 分配阀上(4阀芯)~过渡阀块(分配阀上)

Length: 759 mm
Specification: DN10;4SP-6;28Mpa
Left fitting: 45°美制内螺纹37°锥
Right fitting: 美制内螺纹37°锥

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Diagram Pipe No. 24

3V-9171

Installation route: 分配阀~过渡阀块(回转接头上)

Length: 975 mm
Specification: DN25;4SP-16;35Mpa
Left fitting: Heavy-series flangeOriginal Chinese: 法兰-重型
Right fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型

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Diagram Pipe No. 48

5C-9988

Installation route: 回油铁管(分配阀)~过渡阀块(分配阀旁)

Length: 1,425 mm
Specification: DN38;4SP-24;17.5Mpa
Left fitting: 90° light-series flangeOriginal Chinese: 90°法兰-轻型
Right fitting: 90° light-series flangeOriginal Chinese: 90°法兰-轻型

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Diagram Pipe No. 16

3V-1481

Installation route: 分配阀(3阀芯)~组合阀(液压油箱左下)

Length: 1,095 mm
Specification: DN32;4SP-20;35Mpa
Left fitting: 90° heavy-series flangeOriginal Chinese: 90°法兰-重型
Right fitting: 45° heavy-series flangeOriginal Chinese: 45°法兰-重型

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Diagram Pipe No. 14

8K-0767

Installation route: 分配阀(3阀芯)~法兰板(回油滤芯前)

Length: 530 mm
Specification: DN38;1SN-24;3.5Mpa
Left fitting: Light-series flangeOriginal Chinese: 法兰-轻型
Right fitting: 90° light-series flangeOriginal Chinese: 90°法兰-轻型

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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 Caterpillar CAT®231D Control Valve?

There are 3 published records. 3 include a length, both end fittings, and a part number or diagram pipe number.

What is the hose length range for Caterpillar CAT®231D Control Valve?

Based on published records with valid lengths, the range is 610–1,330 mm. Open the individual record to verify its installation position and both end fittings before fabrication.

Which hose specifications are common for Caterpillar CAT®231D Control Valve?

The most frequent raw specifications in the current published records are: DN19;1SN-12;8.7Mpa (1 records), DN25;4SP-16;35Mpa (1 records), DN32;4SP-20;35Mpa (1 records). Verify the specification together with length, pressure, and fitting details.

How can I identify the left and right hose fittings for Caterpillar CAT®231D Control Valve?

Each record keeps the left and right fitting descriptions separate. Current examples: 8K-3220: left Heavy-series flange; right Heavy-series flange; 3V-4332: left 美制内螺纹37°锥; right 美制内螺纹37°锥; 8K-3219: left Heavy-series flange; right Heavy-series flange. Open the exact part-number or pipe-number record; do not swap ends based on appearance alone.

Can I locate a Caterpillar CAT®231D Control Valve hose by diagram pipe number?

Yes. Current examples with a diagram pipe number are: Pipe No. 11 (8K-3220), Pipe No. 15 (3V-4332), Pipe No. 12 (8K-3219). Open a record to compare its installation position with the linked manual page.