CB/T 4559-2025 in English
VALIDJ Class Shipboard Dual Oil Filter
- Issued on:2025-04-10
- Implemented on:2025-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$165.00
$161.00
$161.00
| Standard No: | CB/T 4559-2025 |
| Document status: | VALID |
| Title in English: | J Class Shipboard Dual Oil Filter |
| Title in Chinese: | J类船用双联油滤器 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2025-04-10 |
| Implemented on: | 2025-11-01 |
| ICS Classification: | 47.020.30-Piping systems |
| Chinese Classification: | U55-Marine pipe fittings |
| Professional Classification: | CB-Watercraft |
| Related Keywords: | j class shipboard dual oil filter introduction standard evolution
lubricating oil medium oil system edition2025 edition filter cartridge cast irongb/t 9439-2023 filter cartridgeq235b carbon |
Introduction
Standard Evolution and Scope of Application
CB/T 4559-2025 replaces the 1982 edition of CBM1132 and CBM1134 standards. The main technical upgrades include:
| Improvement dimensions | 1982 edition | 2025 edition |
|---|---|---|
| Filter cartridge opening area ratio | Not specified | New requirements for DN25-DN32 |
| Magnet material | Not specified | New 2J63 permanent magnet steel (GB/T 14991) |
| Inspection system | Basic requirements | Complete test methods + inspection rules |
Core parameter analysis
Model classification
- JA type: fuel medium, nominal pressure 5K
- JB type: lubricating oil medium, with magnet structure
Key technical indicators
| Parameters | Requirements | Test standards |
|---|---|---|
| Strength test | 0.6MPa holding pressure for 3min without leakage | GB/T |
| Sealing performance | Leakage ≤6ml×(DN/25) | Hydraulic pressure 0.44MPa |
| Weight deviation | -4%~+2% | Graduation value ≤0.01kg |
Material and manufacturing specifications
Material requirements for key components
| Components | Material | Standard |
|---|---|---|
| Body | HT200 grey cast iron | GB/T 9439-2023 |
| Filter cartridge | Q235B carbon steel | GB/T 700-2006 |
| Metal mesh | H62 brass/06Cr19Ni10 stainless steel | GB/T 2040/1220 |
Note: Castings must retain test bars with furnace numbers for ≥3 years
Implementation recommendations
Selection guide
- For fuel system, preferably JA type with F6364 sealing ring
- For lubricating oil system, preferably JA type with F6364 sealing ring class=instrument>JB type and check the magnet 2J63 material report
- For DN125 specifications, pay attention to the impact of the total weight of 489.4kg on the supporting structure
Maintenance points
- Regularly check whether the filter mesh meets the requirements of GB/T 5330
- When replacing O-rings, distinguish between fuel (HI6463) and lubricating oil (HI6463) models
- Keep the flange sealing surface protected during storage
Sample only — not a preview of CB/T 4559-2025
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