Check Valve Discs - Pumps, Valves, Piping and Fittings
Replacement discs used in marine check valves and pump discharge non-return valves to prevent reverse flow in seawater, ballast, bilge, fire-main, cooling-water and general piping systems. Disc design and materials depend on valve type, pressure class, temperature and fluid compatibility.
ProShipWorks provides end-to-end support to source and supply Check Valve Discs for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.
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Product Information
| Product Name | Check Valve Discs |
|---|---|
| Product Category | Pumps, Valves, Piping and Fittings |
| Product Reference | 677 |
| Brands / Manufacturers | KSB, Crane, AVK |
| Unit of Measure | Piece |
Key Features
| Key Feature |
|---|
| 1. Prevents reverse flow and protects pumps |
| 2. Available for swing, lift, wafer and dual-plate check valves |
| 3. Common materials include bronze, stainless steel, ductile iron and nickel-aluminium bronze |
| 4. May include resilient seats, metal seats, hinges, pins or springs |
| 5. Must match the original valve geometry and pressure rating |
Applications of Check Valve Discs
| Application |
|---|
| 1. Marine seawater and cooling-water systems |
| 2. Ballast, bilge and fire-main piping |
| 3. Pump discharge and general shipboard liquid piping |
Standards, Certifications & Class Approval
Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.
| Applicable Standards & Certification | Applicable requirements may include API 594, API 6D, ASME B16.34, EN 12334, EN 558, EN 1092-2 and applicable material standards. The correct standard depends on the complete check-valve design and service. |
|---|---|
| Class Approval | Marine-approved complete valves may be accepted by DNV, ABS, Lloyd's Register, Bureau Veritas or ClassNK when covered by the vessel's approved equipment documentation. A replacement disc alone is not normally separately class-approved. |
Installation, Maintenance & Safety Information
| Installation Notes | Confirm valve manufacturer, size, pressure class, flow direction, disc orientation, hinge or spring arrangement, seat design and material before installation. Isolate, drain and depressurize the line, replace associated pins or seals when required, and function-test the valve after assembly. |
|---|---|
| Maintenance Tips | Inspect for erosion, corrosion, impact damage, seat wear, hinge wear and restricted movement. Keep seating surfaces clean, verify free movement during planned maintenance, and replace discs showing distortion, cracking, excessive wear or loss of coating. |
| Safety Notes | Use approved lifting and isolation procedures. Ensure the line is fully depressurized and drained before removal. Select materials compatible with seawater, chemicals and operating temperature, and never operate a check valve outside its rated pressure or flow conditions. |
Request a Quote for Check Valve Discs
Contact ProShipWorks for marine or industrial product sourcing, quotations and delivery.
- Vessel name and IMO number
- ETA / vessel schedule
- Berth or vessel location
- Required quantity
- Preferred delivery window
- Shipping agent contact details
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