DN8-PN40 Y Pattern Lift Check Valve

DN8-PN40 Y Pattern Lift Check Valve

Nominal Diameter (DN) DN8
Nominal Pressure (PN) PN40 (40 bar)
Body Configuration Y Pattern
Valve Type Lift Check (Spring-loaded)
Applicable Media Water, oil, gas, non-corrosive or mildly corrosive media
Temperature Range -20°C to +180°C (depending on sealing material)
End Connections Threaded / Socket Weld / Butt Weld (optional)
Flow Direction Unidirectional, arrow marked on body

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Technical Data Sheet – Y Pattern Lift Check Valve

Model: DN8-PN40 Y Pattern Lift Check Valve

  1. Product Description

The Y Pattern Lift Check Valve is a spring-loaded, automatic non-return valve. Its Y-shaped body provides a straight-through flow path with low pressure drop, while the lift-type disc ensures rapid, positive closing when flow reverses. Designed for DN8 and PN40 rating, it is suitable for high-pressure systems in compact piping layouts.

  1. Main Technical Parameters

Parameter

Value

Nominal Diameter (DN)

DN8

Nominal Pressure (PN)

PN40 (40 bar)

Body Configuration

Y Pattern

Kleptype

Lift Check (Spring-loaded)

Applicable Media

Water, oil, gas, non-corrosive or mildly corrosive media

Temperature Range

-20°C to +180°C (depending on sealing material)

End Connections

Threaded / Socket Weld / Butt Weld (optional)

Flow Direction

Unidirectional, arrow marked on body

  1. Main Component Materials (Standard Configuration)

Onderdeel

Materiaal

Lichaam

Stainless Steel 1.4408 / CF8M or Carbon Steel 1.0619 / WCB

Bonnet

Same as body

Schijf

Stainless Steel 1.4404 / 304 / 316

Seating Surface

Stellite overlay or stainless steel to stainless steel

Lente

Stainless Steel 1.4310 / 304

Gasket

Flexible graphite + stainless steel spiral wound

Threads

ISO 228 / BSPT / NPT

  1. Dimensions & Weight (Reference)

DN

Length L (mm)

Height H (mm)

Thread Size

Weight (kg)

DN8

65

70

1/4″

0.5

Note: Dimensions are for reference and may vary slightly depending on end connection type. Refer to the final drawing for exact values.

  1. Features & Benefits
  • Y‑Pattern Flow Path – Low flow resistance and high flow capacity.
  • Lift Check Design – Spring-assisted disc ensures rapid, chatter-free closing upon flow reversal.
  • High‑Pressure Capability – PN40 rating suitable for steam, high-pressure water, and hydraulic systems.
  • Compact Installation – Can be installed horizontally or vertically (spring‑loaded version).
  • Reliable Sealing – Metal-to-metal or soft seat options available; long service life.
  1. Applicable Standards
  • Design & Manufacture: API 602 / BS 5352 / Company Standard
  • Pressure Testing: ISO 5208 / API 598
  • Threaded Ends: ISO 7-1 / ASME B1.20.1
  • Socket Weld Ends: ASME B16.11
  1. Typical Applications
  • Steam and condensate systems
  • High-pressure gas pipelines
  • Hydraulic and lubrication systems
  • Chemical and petrochemical auxiliary lines
  • Boiler feedwater systems
  1. Important Notes
  1. Ensure the flow direction arrow on the body matches the actual media flow.
  2. For systems with solid particles, install a strainer upstream.
  3. Do not exceed the rated pressure and temperature limits.
  4. Stainless steel body is recommended for corrosive media; carbon steel body for neutral media, oil, and water.

GARANTIE:

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