DN250-PN16 Wafer Dual Plate Check Valve

DN250-PN16 Wafer Dual Plate Check Valve

Product Name Wafer Dual Plate Check Valve / Wafer Double Door Check Valve
Type/Series General Purpose (e.g., Series equivalent to Pegler V909, Oventrop, Honeywell Impact)
Nominal Diameter DN250 (10 inches)
Nominal Pressure PN16
End Connection Wafer Type Design, designed for installation between PN16 flanges (According to EN 1092-2, ISO 7005-2, or ASME B16.5 Class 150)
Design Structure Dual Plate / Double Door with Spring-Loaded Hinge

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Technical Data Sheet: DN250-PN16 Wafer Dual Plate Check Valve

Item

Spécification

Product Name

Wafer Dual Plate Check Valve / Wafer Double Door Check Valve

Type/Series

General Purpose (e.g., Series equivalent to Pegler V909, Oventrop, Honeywell Impact)

Nominal Diameter

DN250 (10 inches)

Nominal Pressure

PN16

End Connection

Wafer Type Design, designed for installation between PN16 flanges (According to EN 1092-2, ISO 7005-2, or ASME B16.5 Class 150)

Design Structure

Dual Plate / Double Door with Spring-Loaded Hinge

Technical Parameters

Paramètre

Value

Remarques

Pression nominale

PN 16 / 16 bar

Maximum allowable working pressure

Shell Test Pressure

24 bar

Hydrostatic test

Seat Test Pressure

17.6 bar

Hydrostatic test

Suitable Media

Water, Non-corrosive liquids, HVAC water, Potable water

Not suitable for heavily polluted media or strong acids/bases unless specified

Medium Temp. Range

-10°C to +110°C (Standard)

Dependent on seat material

-29°C to +180°C (Special Seals)

Flow Coefficient (Kv)

Approx. 2000 – 2330 m³/h

Flow rate at ΔP = 1 bar, fully open

Installation Position

Horizontal or Vertical

For horizontal lines, hinge pin must be horizontal/vertical; For vertical lines, flow must be upwards

Flow Direction

Unidirectionnel

Must match arrow marking on body

Materials of Construction

Composant

Matériel

Remarks / Alternative

Corps

Ductile Iron / Cast Iron

e.g., EN-GJS-450-10 (GGG40), EN-GJL-250

Discs / Plates

Stainless Steel / Coated Ductile Iron

Common: SS304, SS316; or Epoxy-coated Ductile Iron

Shaft / Pin

Stainless Steel

e.g., SS420, SS316

Springs

Stainless Steel

Seat / Seal

EPDM (Ethylene Propylene Diene Monomer)

Standard Option: Suitable for water, wastewater, mild chemicals

NBR (Nitrile Butadiene Rubber)

Suitable for oils and fuels

PTFE (Polytetrafluoroethylene)

High temperature or corrosive media

Coating

Epoxy / Anti-corrosion Paint

Standard color: Blue (RAL 5005) or as specified

Face-to-Face & Installation Dimensions (mm)

The face-to-face dimension (L) is critical for correct installation between flanges.

Dimension

Value

Standard / Reference

Face-to-Face Length (L)

108 mm

According to EN 558-1 Series 49 (formerly DIN 3202 K3)

114 mm

Alternative dimension depending on manufacturer design

Body Diameter (D)

~328 mm

Maximum outer diameter to fit between PN16 DN250 flanges

Reference: Flange Bolt Circle Dia. (K)

355 mm

Corresponds to EN 1092-2 PN16 DN250 flange

Reference: Flange Bolt Holes

12 – Ø26 mm

Corresponds to EN 1092-2 PN16 DN250 flange

Approx. Weight

~19.5 kg

Range varies by manufacturer (approx. 13.8kg – 30kg)

Dimensional Sketch (Reference Only):

text

      _______

  <-->|     |<--  L (Face-to-Face Length)

   |  |_____|  |

   |            |

   |   D (Body Diameter / Max. Width)  |

   |            |

   |____________|

      (Flow ↑)

Applicable Standards

  • Design & Manufacture: EN 16767, API 594, BS 5153, JB/T 8937
  • Face à face : EN 558-1 (Series 49), ISO 5752, DIN 3202 K3
  • Flange Connection: EN 1092-2, ISO 7005-2, ASME B16.5 Class 150 (compatible)
  • Inspection & Testing: EN 12266, API 598, ISO 5208

Key Features & Applications

Key Features:

  • Compact & Lightweight: The wafer design saves space and reduces weight compared to swing check valves.
  • Quick Closing / Non-Slam: Short spring-assisted disc travel minimizes the risk of water hammer and prevents reverse flow effectively.
  • Low Pressure Drop: Streamlined body and disc design offer low resistance to flow.
  • Versatile Installation: Can be installed in both horizontal and vertical pipelines.

Main Applications:

  • Water Supply and Distribution
  • HVAC Systems (Heating, Ventilation, and Air Conditioning)
  • Industrial Cooling Water Circuits
  • Pump Protection (Preventing backflow damage)

Notes:

  • This datasheet is based on general industry specifications. For final installation, please refer to the official datasheet of the specific manufacturer (e.g., Flowserve, Bray, Emerson, KSB).
  • When ordering, please specify the required seat material (EPDM, NBR, PTFE, etc.) based on your media temperature and chemical compatibility.

GARANTIE :

SAVVY VALVES s'engage à fournir des produits d'une qualité exceptionnelle et un service après-vente sans souci. Nos vannes sont garanties pour une durée de vie minimale de 12 mois, période durant laquelle nous fournissons gratuitement toutes les pièces de rechange nécessaires et des instructions d'entretien détaillées. Pendant la période de garantie, en cas de dommage non causé par l'homme, nous remplaçons gratuitement les composants et fournissons une assistance technique professionnelle. Après l'expiration de la garantie, seuls les pièces de rechange sont à votre charge, tout en bénéficiant de services de maintenance à prix réduits. Notre objectif est d'aider nos clients à réduire leurs coûts d'exploitation et à optimiser leur production grâce à une qualité fiable et un service après-vente complet. Qu'il s'agisse de questions techniques ou de besoins de maintenance, notre équipe d'experts répondra rapidement pour garantir le fonctionnement optimal de votre système de vannes.

 


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