Relief Valve Discs - Pumps, Valves, Piping and Fittings
Replacement relief-valve discs are pressure-retaining or sealing components used in marine pumps, valves, piping and fittings. They are selected by valve design, nominal size, pressure setting, temperature, fluid service and material compatibility.
ProShipWorks provides end-to-end support to source and supply Relief Valve Discs for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.
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Product Information
| Product Name | Relief Valve Discs |
|---|---|
| Product Category | Pumps, Valves, Piping and Fittings |
| Product Reference | 680 |
| Brands / Manufacturers | Crosby, LESER, Kunkle |
| Unit of Measure | Piece |
Key Features
| Key Feature |
|---|
| 1. Manufacturer-specific geometry and dimensions |
| 2. Metallic or resilient sealing materials |
| 3. Suitable for specified pressure and temperature ranges |
| 4. Available for seawater, freshwater, fuel, oil, steam and air service |
| 5. Requires compatibility with the original relief-valve assembly |
Applications of Relief Valve Discs
| Application |
|---|
| 1. Marine pump pressure-relief valves |
| 2. Hydraulic, fuel-oil and lubrication-oil systems |
| 3. Steam, seawater, freshwater and compressed-air piping systems |
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 | Complete relief valves may be designed or tested to ASME BPVC Section VIII, API 526, API 527 and API 576, depending on service and manufacturer. Disc requirements are normally controlled by the valve manufacturer’s drawings and material specifications. |
|---|---|
| Class Approval | Class approval is generally applicable to the complete valve or system rather than to an interchangeable disc alone. Where required, acceptance may involve DNV, ABS, Lloyd’s Register, Bureau Veritas or ClassNK, subject to the vessel and equipment approval. |
Installation, Maintenance & Safety Information
| Installation Notes | Verify manufacturer, valve type, part number, dimensions, material, pressure setting, temperature rating and flow direction before installation. Clean mating surfaces, use approved replacement parts, and follow the valve maker’s overhaul procedure. Do not alter the disc or sealing surfaces. |
|---|---|
| Maintenance Tips | Inspect for erosion, corrosion, scoring, deformation and deposits during scheduled valve maintenance. Confirm set pressure and seat tightness using calibrated equipment after overhaul, and replace damaged or hardened seals. Keep traceability to the valve nameplate and service history. |
| Safety Notes | Isolate, depressurize, drain and cool the system before removing the valve or disc. Lock out connected machinery and verify zero pressure. Never install a disc with an incorrect rating or material, and never defeat or block a required relief device. |
Request a Quote for Relief 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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