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DIN Marine Angle Valve

DIN Marine Angle Valve

The DIN Marine Angle Valve is a globe-type shut-off valve specifically designed for shipboard piping systems where reliable flow control and space-efficient 90-degree redirection are required. Manufactured in full compliance with the applicable German industrial standards for marine service, this valve offers long-term corrosion resistance, consistent tight shut-off, and full interchangeability across international vessel fleets. It is the preferred choice for seawater cooling, ballast, fire main, bilge, and similar critical fluid circuits.

Overview

1. Governing Standards & Type Approval

  • Core design standard: DIN 86251 / DIN 86501 – Bronze angle valves for shipbuilding, with flanged or butt-weld ends.

  • Connection dimensions: Flange drilling to DIN 2501 / EN 1092-1 (PN 10, PN 16).

  • Testing standard: Shell and seat tightness tests conducted per DIN EN 12266-1.

  • Material standards: Castings conform to DIN 1705 / EN 1982; mechanical properties verified against EN 12516-1.

  • Classification society acceptance: Can be supplied with type approval or works certification from major societies such as DNV, BV, LR, ABS, or RINA upon request.

2. Material & Corrosion Protection

  • Body & Bonnet: High-strength gunmetal bronze (CuSn10Zn2 / CC491K), providing outstanding resistance to seawater, brine, and marine atmospheres.

  • Trim: Nickel-aluminum bronze or duplex stainless steel seats and discs; stainless steel (AISI 316) stem for enhanced durability.

  • Optional upgrade: CuNi10Fe1Mn body material for elevated corrosion demands or higher flow velocity.

  • Bonnet gasket & packing: PTFE/graphite combinations, suitable for operating temperatures from -10 °C to +180 °C.

3. Construction Features

  • Angle pattern body: Minimizes turbulence and erosion while reducing the number of elbows in the pipeline.

  • Bolted bonnet & rising stem: Clear visual open/closed indication; easy in-place maintenance.

  • Renewable seat ring and disc: Components can be replaced without removing the valve body from the line, drastically cutting overhaul time.

  • Back-seat arrangement: Protects the stem packing when the valve is fully open, extending service life.

  • Low-operating torque: Precision-machined stem threads and anti-friction brass nuts require less effort during operation.

4. Technical Specifications

  • Nominal Diameters: DN 15 – DN 200 (custom sizes available).

  • Nominal Pressure: PN 6 / PN 10 / PN 16 (other ratings on request).

  • Test Pressure:

    • Shell test: 1.5 × PN

    • Seat tightness test: 1.1 × PN

  • Flange Standard: DIN 2501, PN 10 or PN 16, with machined raised face.

  • Marking: Full traceability markings per DIN EN 19 (size, PN, material code, manufacturer’s monogram, heat number).

5. Typical Applications

  • Seawater cooling and main circulation loops

  • Ballast water and tank stripping systems

  • Fire main and hydrant isolation

  • Bilge and sewage discharge lines

  • Fuel oil and lubricating oil transfer (where bronze is compatible)

6. Quality Assurance & Documentation

Every valve undergoes a full hydrostatic shell test and a pneumatic or water seat test before dispatch. Standard documentation includes:

  • EN 10204 Type 3.1 inspection certificate (material and test results)

  • Certificate of conformity to DIN 86251 / DIN 86501

  • Optional: class society witness test reports and packing/storage declaration

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