Butterfly Valves - Pumps, Valves, Piping and Fittings
Marine butterfly valves are quarter-turn isolation or control valves used in shipboard seawater, ballast, bilge, cooling, fire-main, fuel, cargo and general piping systems. They are available as wafer, lug, flanged or grooved types with manual, pneumatic, hydraulic or electric actuation.
ProShipWorks provides end-to-end support to source and supply Butterfly Valves for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.
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Product Information
| Product Name | Butterfly Valves |
|---|---|
| Product Category | Pumps, Valves, Piping and Fittings |
| Product Reference | 157 |
| Brands / Manufacturers | Bray, KSB, Valmet, Emerson Keystone, AVK |
| Unit of Measure | Piece |
Key Features
| Key Feature |
|---|
| 1. Compact and lightweight compared with many gate or globe valves |
| 2. Quarter-turn operation with low operating time |
| 3. Wafer, lug and double-flanged body configurations |
| 4. Resilient-seated or high-performance metal-seated designs |
| 5. Suitable for manual or remote actuation |
| 6. Available in corrosion-resistant marine materials and coatings |
Applications of Butterfly Valves
| Application |
|---|
| 1. Ballast, bilge, fire-main and seawater cooling systems |
| 2. Freshwater, HVAC, general service and piping systems |
| 3. Fuel, cargo, scrubber, exhaust and process-water systems |
Models & Manufacturers
| Model | Manufacturer |
|---|---|
| Bray Series 30/31 | Bray |
| KSB BOA-W | KSB |
| Valmet Neles Jamesbury Wafer-Sphere | Valmet |
| Keystone Figure 320 | Emerson |
| AVK Series 75 | AVK |
Technical Specifications
| Model | Specification | Value | Unit |
|---|---|---|---|
| General marine butterfly valve | Valve type | Wafer, lug or double-flanged | — |
| General marine butterfly valve | Nominal size | DN 40 to DN 1200, depending on manufacturer and design | DN |
| General marine butterfly valve | Pressure rating | Typically PN 6, PN 10, PN 16 or ASME Class 150 | — |
| General marine butterfly valve | Temperature range | Typically -20 to 120 for resilient-seated designs; higher for specialized designs | °C |
| General marine butterfly valve | Body materials | Ductile iron, carbon steel, stainless steel or marine bronze | — |
| General marine butterfly valve | Seat materials | EPDM, NBR, FKM, PTFE or metal seat, selected for the medium | — |
| General marine butterfly valve | Actuation | Manual lever, gearbox, pneumatic, hydraulic or electric | — |
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 | Common references include EN 593 for metallic butterfly valves, ISO 5752 for face-to-face dimensions, ISO 5211 for actuator mounting, API 609 for butterfly valves and EN 1074 where applicable to water-service valves. Actual compliance depends on the valve design and service. |
|---|---|
| Class Approval | Marine type approval or product certification may be available from DNV, ABS, Lloyd's Register, Bureau Veritas, ClassNK and RINA. Approval is model-, size-, pressure-, material- and service-specific; verify the manufacturer's current certificate for the vessel system. |
Installation, Maintenance & Safety Information
| Installation Notes | Confirm valve size, pressure class, flow direction, seat material, flange standard and actuator requirements before installation. Align and support piping correctly, keep the disc clear of flange or pipe obstructions, and tighten bolts in a diagonal sequence to the manufacturer's torque. Do not use a wafer valve to align piping. |
|---|---|
| Maintenance Tips | Inspect periodically for leakage, corrosion, loose fasteners and actuator malfunction. Exercise manually operated valves at planned intervals, verify remote position indication, and inspect or replace seats, seals and packing when wear or leakage is detected. Follow the manufacturer's overhaul instructions. |
| Safety Notes | Isolate, depressurize, drain and, where necessary, gas-free the line before removal or maintenance. Lock out and tag out all connected energy sources. Confirm the valve is suitable for the medium, temperature and pressure; do not use a standard valve for fire-safe, cryogenic, toxic or hazardous service unless specifically certified. |
Request a Quote for Butterfly Valves
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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