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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

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

  1. Main Component Materials (Standard Configuration)

Component

Material

Body

Stainless Steel 1.4408 / CF8M or Carbon Steel 1.0619 / WCB

Bonnet

Same as body

Disc

Stainless Steel 1.4404 / 304 / 316

Seating Surface

Stellite overlay or stainless steel to stainless steel

Spring

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.

GUATANTEE:

SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.

 


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