CB/T 11696-1996 MARINE CAST STEEL CHECK VALVES
Item | Description |
|---|---|
Product Name | CB/T 11696-1996 MARINE CAST STEEL CHECK VALVES |
Certificates | ABS, LR, BV, DNV, RINA, CCS |
FOB Price | Get Latest Price Now |
Warranty | 12 months (unless otherwise specified) |
Place of Origin | China |
Overview
KEY FEATURES
Standard: CB/T 11696-1996
Nominal Pressure: 1.0 MPa
Nominal Diameter (DN): 100 ~ 500 mm
Connection Type: Flanged
Body Material: Cast Steel
Disc Material: Cast Tin Bronze
Applicable Medium: Seawater, Fresh Water, Fuel Oil, Lubricating Oil
1. NORMATIVE REFERENCES
GB 569-65 - Ship flanged connection dimensions and sealing faces
GB 600-91 - General technical requirements for ship piping valves
GB 2501-89 - Ship flanged connection dimensions and sealing faces (four-position)
GB 3032-89 - Marking of ship piping accessories
ZB/T U52 001-89 - Wall thickness of ship casting valves
2. PRODUCT CLASSIFICATION
2.1 TYPES
Types of check valves are specified as follows:
TYPE A: Flange connection dimensions and sealing faces comply with GB 569.
TYPE AS: Flange connection dimensions and sealing faces comply with GB 2501.
2.2 BASIC PARAMETERS (TABLE 1)
| TYPE | NOMINAL PRESSURE PN (MPa) | NOMINAL DIAMETER DN (mm) |
|---|---|---|
| A | 1.0 | 100 ~ 300 |
| AS | 1.0 | 100 ~ 500 |
3. DIMENSIONS AND STRUCTURAL DATA
3.1 TYPE A DIMENSIONS (TABLE 2 - COMPLY WITH GB 569) (UNIT: MM)
| NOMINAL DIA. DN | H≈ | D | D1 | D2 | b | d | A | n | Th. | D0 | MASS (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 100 | 238 | 278 | 190 | 158 | 13 | 18 | 9 | 8 | 32 | 75 | |
| 125 | 260 | 334 | 215 | 183 | 15 | 11 | 40 | 40 | |||
| 150 | 280 | 380 | 240 | 208 | 16 | 11 | 50 | 50 | |||
| 200 | 310 | 456 | 310 | 273 | 17 | 13 | 12 | 60 | 72 | ||
| 250 | 340 | 534 | 385 | 336 | 21 | 18 | 13 | 14 | 70 | 85 | |
| 300 | 400 | 610 | 435 | 391 | 24 | 14 | 16 | 80 | 130 |
3.2 TYPE AS DIMENSIONS (TABLE 3 - COMPLY WITH GB 2501) (UNIT: MM)
| NOMINAL DIA. DN | H≈ | D | D1 | D2 | b | d | A | n | Th. | D0 | MASS (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 100 | 238 | 278 | 220 | 180 | 15 | 18 | 9 | 32 | 27.4 | ||
| 125 | 260 | 334 | 250 | 210 | 18 | 11 | 40 | 38 | |||
| 150 | 280 | 380 | 285 | 240 | 20 | 18 | 11 | 8 | M16 | 50 | 45.5 |
| 200 | 310 | 456 | 340 | 295 | 22 | 13 | 60 | 80.5 | |||
| 250 | 340 | 534 | 395 | 350 | 24 | 13 | 12 | 70 | 93.3 | ||
| 300 | 400 | 610 | 445 | 400 | 24 | 22 | 13 | 80 | 140 | ||
| 350 | 487 | 670 | 505 | 460 | 26 | 14 | 90 | 172.4 | |||
| 400 | 506 | 635 | 565 | 515 | 26 | 15 | 16 | 100 | 230 | ||
| 450 | 640 | 680 | 615 | 565 | 28 | 26 | 15 | 120 | 344 | ||
| 500 | 750 | 800 | 670 | 620 | 28 | 16 | 20 | 140 | 643 |
Note: The structural diagrams for Type A and Type AS are shown in Figure 1.
4. MATERIALS OF MAIN PARTS (TABLE 4)
| PART NAME | MATERIAL NAME | GRADE | STANDARD NO. |
|---|---|---|---|
| Body, Bonnet | Cast Steel | ZG 230-450 | CB 772-86 |
| Disc, Upper and Lower Guide Sleeves | Cast Tin Bronze | ZQSn 10-1 | GB 883-83 |
5. TECHNICAL REQUIREMENTS
5.1 GENERAL REQUIREMENTS
Flange connection dimensions and sealing faces shall comply with GB 569 or GB 2501.
Valve body wall thickness shall comply with ZB/T U52 001.
Other technical requirements shall comply with GB 600.
5.2 TEST METHODS AND INSPECTION RULES
Test methods shall comply with GB 600.
Factory inspection items shall comply with Table 5.
TABLE 5 - FACTORY INSPECTION ITEMS
| SERIAL NO. | INSPECTION ITEM | REQUIREMENTS |
|---|---|---|
| 1 | Mechanical properties and chemical composition of cast steel | Comply with Clause 4.2 |
| 2 | Visual inspection | Per GB 600 |
| 3 | Strength and material tightness hydraulic test | Per GB 600 |
| 4 | Seat sealing test | Per GB 600 |
Note: Each check valve shall be inspected item by item according to Table 5 before leaving the factory.
6. DESIGNATION AND MARKING
6.1 DESIGNATION EXAMPLES:
TYPE A: For a check valve with nominal pressure 1.0 MPa, nominal diameter 100 mm, flange connection dimensions and sealing faces per GB 569: A10100 GB/T 11696-1996
TYPE AS: For a check valve with nominal pressure 1.0 MPa, nominal diameter 100 mm, flange connection dimensions and sealing faces per GB 2501: AS10100 GB/T 11696-1996
6.2 MARKING AND PACKAGING:
Marking shall comply with GB 3032.
Packaging shall comply with GB 600.
7. INQUIRY REQUIREMENTS (FOR BUYERS)
To ensure an accurate quotation and compliance with CB/T 11696-1996, please provide the following details:
Product Name: Marine Cast Steel Erect Check Valve
Standard: CB/T 11696-1996
Type: [ ] Type A (GB 569) / [ ] Type AS (GB 2501)
Nominal Diameter (DN): [e.g., 100, 150, 200]
Nominal Pressure: 1.0 MPa
Applicable Medium: [e.g., Seawater, Fresh Water, Fuel Oil, Lubricating Oil]
Quantity: [e.g., 10 pcs]
Destination Port: [e.g., Singapore, Rotterdam]
Inspection Requirements: [e.g., EN 10204 3.1 Certificate, Third-Party Witness]
Classification Society Required: [e.g., NK, LR, DNV, ABS, CCS, or None]
