DN50-PN40-RF Axial Check Valve

DN50-PN40-RF Axial Check Valve

Nominal Diameter (DN) 50 mm
Nominal Pressure (PN) 40 bar
Connection Type RF (Raised Face Flange)
Design Type Axial, Spring-Assisted
Applicable Media Water, Oil, Steam, Gas, etc.
Media Temperature Range -20°C ~ +200°C
Body Material Carbon Steel WCB / Stainless Steel 304 / 316
Disc Material SS 304/316 + Stellite hard-faced sealing
Seat Seal Metal Hard Seal / Soft Seal (PTFE)
Spring Material SS 316 / Inconel X-750
Flange Standard EN 1092-1 (PN40) / ASME B16.5 (Class 300)
Cracking Pressure ≤ 0.1 bar
Full Flow Pressure Drop ≤ 0.02 bar

  • aboutimg3
  • aboutimg4
  • aboutimg5


TECHNICAL DATA SHEET

Product: DN50-PN40-RF Axial Check Valve

  1. PRODUCT DESCRIPTION

The axial check valve (also known as axial flow check valve) is designed for minimal flow resistance and pulsation reduction. Featuring an axial flow path and spring-assisted closing mechanism, it is suitable for pipeline systems requiring low water hammer, minimal pressure drop, and tight sealing. Suitable for horizontal or vertical installation (flow direction must be observed).

  1. KEY TECHNICAL PARAMETERS

Item

仕様

Remarks

Nominal Diameter (DN)

50 mm

2 inch

Nominal Pressure (PN)

40 bar

Approx. Class 300

Connection Type

RF (Raised Face Flange)

Per EN 1092-1 / ASME B16.5

Design Type

Axial, Spring-Assisted

Disc moves parallel to pipeline axis

Applicable Media

Water, Oil, Steam, Gas, etc.

Dependent on seat material

Media Temperature Range

-20°C ~ +200°C

High-temp version available up to +400°C

ボディ素材

Carbon Steel WCB / Stainless Steel 304 / 316

Duplex steel etc. optional

Disc Material

SS 304/316 + Stellite hard-faced sealing

Seat Seal

Metal Hard Seal / Soft Seal (PTFE)

Optional

Spring Material

SS 316 / Inconel X-750

Selected per media temperature

Flange Standard

EN 1092-1 (PN40) / ASME B16.5 (Class 300)

Other standards available upon request

Cracking Pressure

≤ 0.1 bar

Low differential pressure required to open

Full Flow Pressure Drop

≤ 0.02 bar

Typical value, depends on flow velocity

  1. DIMENSIONS & CONNECTIONS (Typical)

Dimension

Value (mm)

Face-to-Face Length L

Approx. 200-250

Overall Height H

Approx. 150-180

Flange OD D

165

Bolt Circle Diameter K

125

Bolt Holes (Number × Diameter)

4 × φ18

Flange Thickness t

Approx. 24

Flange Face

RF (Raised Face) Ra≤3.2μm

Weight (WCB)

Approx. 12-15 kg

  1. PERFORMANCE CHARACTERISTICS
  • Low Flow Resistance: Axial streamlined flow path, lower pressure drop compared to conventional swing or lift check valves.
  • Rapid Closing: Spring-assisted closure minimizes reverse flow and water hammer.
  • Reliable Sealing: Metal hard seal for high temperature/pressure; soft seal option for bubble-tight shut-off.
  • Flexible Installation: Suitable for horizontal or vertical mounting (arrow must point upward or horizontally in flow direction).
  • Easy Maintenance: Most designs allow in-line maintenance without removing from pipeline.
  1. TYPICAL APPLICATIONS
  • Petrochemical: Pump discharge, compressor pipelines.
  • Power Industry: Feedwater systems, condensate lines.
  • Water Supply: High-pressure pump discharge, network backflow prevention.
  • Industrial Processes: Steam lines, cooling systems.
  1. TESTING & CERTIFICATION

Test Item

標準

Requirement

Shell Strength Test

EN 12266 / API 598

1.5 × PN (60 bar)

Seat Leakage Test

EN 12266 / API 598

1.1 × PN (44 bar)

Reverse Flow Seal Test

As per customer request

Gas or liquid test available

Material Certificate

EN 10204 3.1

Optional

  1. INSTALLATION & MAINTENANCE NOTES
  • Verify valve flow direction arrow matches medium flow direction before installation.
  • Recommended to install a strainer upstream to prevent seal damage from debris.
  • For vertical installation, ensure spring is below the disc (refer to specific design drawing).
  • Periodically check for smooth operation and abnormal vibration/noise.
  1. ORDERING EXAMPLE

DN50-PN40-RF Axial Check Valve, Body WCB, Disc/Seat 304+Stellite, Spring 316, Metal Hard Seal, EN 1092-1 Flange.

Note: The above data represents typical design values. Actual product specifications may vary depending on specific design, material selection, or manufacturing standards. Please confirm detailed specifications with the manufacturer before ordering.

保証:

SAVVY VALVESは、卓越した製品品質と安心のアフターサービスの提供に尽力しています。当社のバルブは最低12ヶ月の耐用年数を保証しており、その期間中は必要なスペアパーツと詳細なメンテナンスマニュアルを無料でご提供いたします。保証期間中に人為的要因以外の損傷が発生した場合は、無償で部品を交換し、専門的な技術サポートを提供いたします。保証期間終了後は、スペアパーツ代のみご負担いただき、割引メンテナンスサービスは引き続きご利用いただけます。当社の目標は、信頼性の高い品質と包括的なアフターサービスを通じて、お客様の運用コスト削減と生産効率の向上を支援することです。技術的なお問い合わせやメンテナンスのご依頼など、当社の専門チームが迅速に対応し、お客様のバルブシステムが常に最適なパフォーマンスを維持できるよう尽力いたします。

弊社の製品にご興味がございましたら、こちらに情報を残していただければ、すぐにご連絡させていただきます。