Check Valves Nozzle Type | Fluitek | Philippopoulos s.a.
Check Valves Nozzle Type | Fluitek | Philippopoulos s.a.
Check Valves Nozzle Type | Fluitek | Philippopoulos s.a.
Check Valves Nozzle Type | Fluitek | Philippopoulos s.a.

Check Valves Nozzle Type | Fluitek

Fluitek Nozzle Type – Piston Check Valve

The Fluitek Nozzle Type is a piston check valve designed for gas lines, primarily used to protect compressors from reverse flow. The internal nozzle geometry minimizes pressure drop and enables rapid closure without significant slam when flow decreases or reverses.

Construction and Operation

  • Type: Nozzle check valve with axial piston movement.
  • Connection: Flanged.
  • Standardization: ANSI.
  • Typical pressure classes: Class 600 and Class 900.
  • Other classes: Available upon project specification.
  • The trim is fully contained within the body, with no external stem passage, reducing potential leakage points to atmosphere.

Materials and Seating

Standard materials include carbon steel and low temperature carbon steel. Austenitic stainless steel is available depending on process fluid, temperature, design pressure, and corrosion requirements. Seats are typically supplied with soft inserts.

Sizing Considerations

Valve selection should not be based solely on pipe diameter. Stable operation requires data on flow rate, pressure, density, temperature, and allowable pressure drop. Computational fluid dynamics (CFD) analysis can be provided for actual operating conditions.

Applications

  • Compressor suction or discharge lines
  • Gas processing and process gas systems
  • Refinery and petrochemical units
  • High-pressure lines requiring fast check action
  • Installations where slam and pressure drop must be controlled by valve design

Standards and Certifications

Design typically complies with ASME B16.34. Product documentation references ISO 9001:2015, PED 2014/68/EU, ATEX 2014/34/EU, IEC 61508 SIL, API 6A / ISO 10423, API 6D, API 6DSS, and TR-CU.

FAQ

Does it have an actuator? No. Operation is by differential pressure and internal return mechanism.
Is it the same as a swing check? No. Nozzle type features axial flow and faster dynamic response.
When is sizing analysis required? Always for low flows, compressor service, pressure pulsations, or hydraulic shock risk.

Standard (Options)
  • ANSI
Connection (Options)
  • Flanged
Material (Options)
  • Carbon Steel
  • Austenitic Stainless Steel
  • Low Temperature Carbon Steel
Pressure Rating (Options)
  • 600 lbs
  • 900 lbs

Datasheet and documents

Description

This type of non return valve is mainly used in gas systems for the protection of the compressors in case of reverse flow. The main features are a non-slam functioning, low pressure drop related to the geometry of the flow path, elimination of the risk of fluid leakages to the environment obtained by trim construction, fully contained in the body. FLUITEK ORSENIGO VALVES line of product can be substantiated with computerized fluidynamic analysis determining the flow behavior at the service conditions indicated by the customer.

Design is normally complying with ASME B16.34. Materials are normally carbon steel, low temperature carbon steel, but other materials (such as austenitic stainless steel) can be used per customer request. Seats are normally with soft inserts. Pressure classes are normally ANSI 600# or 900#. Other pressure classes are anyhow available per specific customer request.

Certifications

Fluitek SRL Company Quality Policy 11-2022 – ENG