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Home > Product Division > Valves > Check Valve > Dual Plate

Dual Plate, Check Valve

Metaval Dual Plate Check Valves are compact, lightweight, and efficient non-return valves designed for high-performance applications. Featuring a spring-assisted dual disc mechanism, these valves close quickly to prevent water hammer and reverse flow, making them ideal for both vertical and horizontal installations in space-constrained piping systems.

Size Range

1/2” to 48”

Class Range:

Class 150 to 2500

PN Range:

PN 10 to PN 100

Size Range:

1/2” to 48”

Face-to-Face:

EN 558 / ISO 5752 / API 594

PN Range:

PN 10 to PN 100

Pressure Rating:

Class 150 to 2500

Temperature Range:

Up to 400°C (depending on trim)

End Connections:

Wafer, Lug, Flanged, Butt Weld

  • Design & Manufacturing: API 594 / EN 12334
  • End Connections: ASME B16.5 / B16.47 / EN 1092-1 / AS 4087 / AS 4087 / BS 5155 / B16.25 / B16.11
  • Pressure-Temperature Ratings: ASME B16.34
  • Testing: API 598 / EN 12266-1

Body: ASTM A216 WCB, CF8, CF8M, LCB, WC6, WC9, Duplex, Super Duplex
Disc: CF8 / CF8M / Duplex / Hastelloy / Monel
Spring: SS316 / Inconel / Duplex (as per service)
Gasket: Spiral Wound SS304 / SS316, Graphite, PTFE
Stud & Nut: A193 B7 / A194 2H, B8/8, B8M/8M, B3/3, B3M/3M

  • Spring-Loaded Disc Assembly: Minimizes water hammer
  • Compact Design: Space-saving wafer construction
  • Low Cracking Pressure
  • High-Strength Disc Stops Prevent Overtravel
  • Ideal for High-Frequency Operation
  • Hydrostatic, Pneumatic, Nitrogen, Helium Pressure Tests
  • PMI, UT, RT, MPI, DPT
  • Surface Finish and Microstructure Verification
  • Hardness, Impact, and Tensile Testing
  • Spectrometer and Dimensional Inspection
  • Functional Testing with Counterweight (if applicable)
  • Oxygen Cleaning (as required)
  • Power Plants
  • Process Water and Cooling Systems
  • Chemical and Petrochemical Pipelines
  • Fire Protection Systems
  • HVAC Lines
  • Offshore and Onshore Oil & Gas Installations
  • Water and Effluents
  • Steam
  • Non-corrosive Gases
  • Hydrocarbons
  • Light Slurries
  • CE Certified
  • PED (2014/68/EU)
  • ISO 9001:2015
  • ISO 14001:2015
  • ISO 45001:2018
  • Fire Safe Design – API 607

Documentation

Complete In-House Manufacturing Control

From forging and casting to machining, assembly, and testing — every step is managed under one roof to ensure consistent quality, faster lead times, and zero compromise.

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