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DIN Marine Angle SDNR Valve

DIN Marine Angle SDNR Valve

DIN Marine Angle SDNR Valve (DIN Angle Screw Down Non Return Valve) is a marine valve designed according to German DIN standards and European marine piping requirements.

The valve combines shut-off and non-return functions, allowing manual isolation of pipeline flow while automatically preventing reverse flow. The angle pattern design provides flexible installation, reduced pressure loss, and efficient piping arrangement for marine applications.

DIN Marine Angle SDNR Valve is widely used in:

  • Ship seawater cooling systems

  • Ballast water systems

  • Bilge systems

  • Fire protection systems

  • Fuel oil systems

  • Boiler and auxiliary piping systems

  • Offshore engineering systems

Overview

Working Principle of DIN Marine Angle SDNR Valve

DIN Marine Angle SDNR Valve operates through a screw-down mechanism with an integrated non-return function.

The valve controls fluid flow through the movement of the valve disc:

  1. The handwheel rotates the valve stem.

  2. The stem moves the disc vertically.

  3. When opened, the medium flows through the angled passage.

  4. When closed, the disc seals against the valve seat.

  5. When reverse pressure occurs, the disc automatically closes to prevent backflow.

Main Components of DIN Marine Angle SDNR Valve

ComponentFunction
Valve BodyProvides pressure resistance and angled flow channel
BonnetSeals the valve chamber and supports internal components
DiscControls flow opening and closing
Valve SeatProvides sealing surface
StemTransfers operating movement
HandwheelProvides manual operation
YokeSupports valve mechanism
PackingPrevents stem leakage
GasketEnsures body and bonnet sealing
FastenersSecure valve assembly
Applicable Standards of DIN Marine Angle SDNR Valve

Standard CategoryApplicable Standards
Marine Valve StandardsDIN Marine Valve Standards, DIN 86201 Series
Valve Design StandardsDIN EN Standards, EN 13709
Flange StandardsDIN EN 1092-1, DIN 2501
Pressure RatingPN6, PN10, PN16, PN25
Size StandardsDN15-DN500 (According to Requirements)
Material StandardsDIN EN Material Standards, ASTM Standards
Pressure TestingEN 12266-1, ISO 5208
Marine ClassificationDNV, ABS, LR, BV, RINA, CCS

Material Selection of DIN Marine Angle SDNR Valve

MaterialFeaturesApplications
Cast IronEconomical and reliable mechanical strengthGeneral marine piping systems
Ductile IronHigher strength and impact resistanceMedium pressure systems
BronzeExcellent seawater corrosion resistanceMarine seawater systems
Cast SteelHigh strength and pressure resistanceHigh pressure applications
Stainless SteelExcellent corrosion resistanceOffshore and harsh environments
BrassGood corrosion resistance and machining performanceAuxiliary systems

Common Material Standards

MaterialStandard
Cast IronEN-GJL-250 / DIN GG25
Ductile IronEN-GJS-400
Cast SteelEN-GS-C25 / ASTM A216 WCB
BronzeCuSn5Zn5Pb5 / DIN CC491K
Stainless SteelEN 1.4408 / ASTM CF8M

Technical Specifications of DIN Marine Angle SDNR Valve

ItemSpecification
Product NameDIN Marine Angle SDNR Valve
TypeAngle Screw Down Non Return Valve
StandardDIN / EN Marine Valve Standards
FunctionShut-off and Non-Return
MediumSeawater, Fresh Water, Oil, Air, Steam
Size RangeDN15 - DN500
Pressure RatingPN6 / PN10 / PN16 / PN25
Connection TypeFlanged End
Flange StandardDIN EN 1092-1
OperationManual Handwheel
Body MaterialCast Iron / Bronze / Steel / Stainless Steel
InstallationMarine Piping Systems
ApplicationShipbuilding, Offshore, Marine Engineering

Pressure Test of DIN Marine Angle SDNR Valve

Test ItemDescription
Shell Hydrostatic TestVerifies body strength and pressure resistance
Seat Leakage TestConfirms sealing performance
Non-Return Function TestChecks automatic closing capability
Pressure Holding TestEnsures reliable operation
Material InspectionConfirms material compliance
Final InspectionEnsures product quality before delivery

Advantages of DIN Marine Angle SDNR Valve

FeatureBenefit
DIN Standard ComplianceSuitable for European marine piping systems
Angle Pattern DesignImproves installation flexibility
Combined Shut-off & Check FunctionReduces system components
Marine Grade MaterialsSuitable for seawater environments
Reliable SealingEnsures safe vessel operation
Typical Applications

ApplicationFunction
Seawater Cooling SystemControls cooling water flow
Ballast SystemPrevents reverse water flow
Bilge SystemProvides safe drainage control
Fire Protection SystemProvides emergency isolation
Fuel Oil SystemControls fuel flow
Marine Auxiliary SystemsEnsures reliable fluid control


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