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Yarway Check Valve, 4000 Series

4000 Series Check Valve

Brand: Yarway
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The 4000 series Y-pattern lift check valves are designed for ASME boiler and pressure vessel code, section I locations and are recommended for applications where leak tight prevention of flow reversal is required.
Features
  • All valves are equipped with high temperature Inconel® springs as standard equipment.
  • Disc is fully guided and vented for accurate seat contact, smooth operation and maximum lift.
  • Spring-loaded disc ensures positive closure, regardless of mounting position.
  • The stainless steel disc is hardened, ground and lapped to ensure leak-free sealing over the valve’s full pressure/ temperature range.
  • All internal surfaces are accurately machined to provide maximum performance.
  • Seat is overlaid with stellite or equal hardfacing.
  • The integral seat hardfacing is overlaid directly on to the base material, eliminating any possibility of leakage behind the seat.
  • Flat, precision machined and lapped seating surfaces eliminate damage from high impact seating.
  • Socket weld and butt weld ends are available as standard.
  • Standard body materials are carbon steel (ASME SA 105), alloy steel (ASME SA 182 gr. F22) and stainless steel (ASME SA 182 gr. F316).
  • All standard valves are made from one-piece die forged bodies.
  • Bonnets and discs are machined from barstock.

Specifications

Brand

Applications

  • Biomass Boiler & Power Boiler, Boiler, Boilers, Clean Steam, General Service, High Temp, HRSG, Pumps, Valves & Manifolds

Approvals & Certifications

  • ASME B31.1, CE, PED

Body Design

  • Long Pattern

End Connection

  • Butt Weld, Socket Weld

Material

  • Carbon Steel, Alloy, Steel, Metal

Media

  • Liquids, Hot Water, Steam, Water

Operating Temperature

  • High Temperature, greater than 400° F (204° C)

Pressure Class

  • ASME

Process Connection Type

  • BWE, SWE

Seat / Seal Type

  • Metal-to-Metal

Shutoff Class

  • Class V (FCI 70-2)

Standards

  • ASME B16.34

Style

  • Back Check Valves

Valve Size

  • NPS 1-1/2 / DN 40, NPS 3 / DN 80, NPS 2-1/2 / DN 65, NPS 1-1/4 / DN 32, NPS 1/2 / DN 15, NPS 1 / DN 25, NPS 4 / DN 100

Valve Size Standard

  • NPS

Documentation

Data Sheets

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