Forged Steel Axial Flow Check Valve
Description
Forged Steel Axial Flow Check Valve – Technical Datasheet
1. Product Overview
This product is a high-performance Forged Steel Axial Flow Check Valve (also known as a Nozzle Check Valve or Pushing Valve), designed to prevent backflow in high-pressure industrial pipelines. As shown in the provided images, it features a streamlined, venturi-shaped forged body (marked DN32 / 1 1/4″) with flanged ends and a grey epoxy coating. The “PUSHING VALVE APPROVED” tag confirms its axial flow design, where the disc moves parallel to the fluid flow. This design provides excellent dynamic response, minimal pressure drop, and silent operation, making it ideal for critical applications in power plants, petrochemical, and high-pressure water systems.
2. Technical Specifications (Nameplate Data)
| Parameter | Specification |
|---|---|
| Product Name | Forged Steel Axial Flow Check Valve |
| Body Type | Forged Steel, Streamlined / Venturi Axial Flow |
| Nominal Diameter (DN) | DN32 (1 1/4″) as shown; DN15 – DN100 available |
| Nominal Pressure (PN) | Class 150 – Class 2500 / PN16 – PN420 |
| Connection Type | Flanged (RF / FF / RTJ) |
| Operation Mode | Automatic (Spring-assisted axial movement) |
| Applicable Temperature | -29°C ~ +425°C (Depends on body and seat material) |
| Applicable Medium | Water, oil, gas, steam, high-pressure fluids |
| Design Standard | API 594 / ASME B16.34 / DIN 3352 |
| Leakage Class | ANSI Class IV / VI (Metal seat / Soft seat) |
3. Material of Main Parts (Forged Steel Standard Configuration)
| Part Name | Standard Material | Optional Material |
|---|---|---|
| Body | ASTM A105 (Forged Carbon Steel) | A182 F11 / F22 / F304 / F316 |
| Bonnet / Cover | ASTM A105 (Forged Carbon Steel) | A182 F11 / F22 / F304 / F316 |
| Disc / Plug | A105 + Stellite Overlay | SS304 / SS316 + Stellite Overlay |
| Seat | Stainless Steel / Stellite Overlay | SS316 + Stellite |
| Stem / Guide | Stainless Steel (SS410 / SS304) | SS316 |
| Spring | Stainless Steel (SS304 / SS316) | Inconel |
| Gasket | Spiral Wound Gasket (SWG) | Metal Ring Joint |
| Coating | Grey Epoxy Resin | Custom colors available |
4. Applicable Standards
| Standard Type | Reference Standard |
|---|---|
| Design & Manufacture | API 594 / ASME B16.34 / DIN 3352 |
| Flange Connection | ANSI B16.5 / DIN 2501 / JIS B2212 |
| Face to Face | API 594 / ASME B16.10 / DIN 3202 |
| Pressure Test | API 598 / ISO 5208 / GB/T 13927 |
5. Key Features
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Superior Forged Steel Body: The ASTM A105 forged construction provides higher tensile strength, density, and structural integrity than cast steel, ensuring safety in high-pressure and high-temperature applications.
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Streamlined Axial Flow Design: The venturi-shaped body and axial disc movement minimize turbulence and pressure drop, ensuring a smooth and energy-efficient flow path.
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Fast & Silent Closing: The spring-assisted axial movement ensures rapid, non-slam closure, effectively preventing water hammer and reducing noise and vibration in the pipeline.
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Compact & Space-Saving: The streamlined design significantly reduces the valve’s overall face-to-face dimension and weight compared to traditional swing check valves.
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Excellent Sealing Performance: The precision-machined disc and seat (with optional Stellite overlay) provide reliable bi-directional sealing, meeting strict leakage standards.
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Visual Identification: Yellow tags provide clear indication of the size (DN32 / 1 1/4″) and “PUSHING VALVE APPROVED” status, ensuring correct installation and traceability.
