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Flow Conditioners

A flow conditioner is a specialized device installed in pipelines to straighten and stabilize turbulent fluid flow (such as gas, oil, or water), ensuring a uniform velocity profile for accurate downstream measurements by meters like ultrasonic, turbine, or orifice types. It typically consists of perforated plates or vanes that reduce swirl, asymmetry, and disturbances from upstream bends or valves.

ProMixUSA – Leading Provider of Advanced Flow Conditioners

What makes our flow conditioners the top choice for your flow conditioning requirements?

They’ve undergone rigorous, independent testing and evaluation by accredited laboratories, consistently demonstrating superior performance in stabilizing downstream flow profiles—even under the toughest conditions.

This ensures reliable, accurate measurements every time, across a wide range of applications including:

  • Air
  • Natural gas
  • Water
  • Oil
  • Liquid petroleum
  • Virtually any other fluid medium

Fast Delivery You Can Count On

  • ANSI raised-face models kept in stock for immediate shipment
  • Fast lead times for custom designs and manufacturing
  • Extensive selection of materials
  • Sizes from ½” to 60″
  • Various installation configurations
  • Compliance options for:
    • Low-temperature
    • High-temperature
    • NORSOK
    • NACE
    • Other demanding specifications

Complete Documentation with Every Order

Every flow conditioner we ship includes:

  • EN 10204 3.1b Material Test Reports
  • Detailed pressure drop calculations
  • Quality control certificates
  • Complete engineering drawings

Trust in performance that’s been proven — and delivered — when you need it most.

 

Size

3/8", 1/2", 3/4", 1", 2", 3", 4", 6", 8", 10", 12", Up to 60"

Material

CS, 304SS, 316SS, Hastelloy, Duplex, Monel, Inconel, Titanium

Connection Ends

RTJF/RTJM, Pinned / Set Screw, RF FWO, RF FOE/FOEL

Wafer Type

 

Key Features & Specifications
  ✓ Stock & Fast Delivery
ANSI raised face Type A – sizes 2–16″, Sch 40 & 80, 316 stainless steel – ready for immediate shipment
  ✓ Custom Manufacturing
Pipe sizes from 3/8″ to 48″ – engineered to your exact specifications
  ✓ Material Variety
Carbon Steel, 316/304 SS, Aluminum, Hastelloy, Duplex, Monel, Inconel, Titanium + more
  ✓ Meter Compatibility
Orifice, ultrasonic, turbine, Coriolis and additional flow measurement technologies
  ✓ Fluid Versatility
Natural gas, oil, water, steam, liquid petroleum – suitable for virtually any medium
  ✓ Installation Aids
Compatible with PRMX FloAlign & Paddle Tabs for safe, accurate lifting, inspection & alignment
  ✓ Certification
EN 10204 3.1b material reports with every order – fully traceable online
  ✓ Standards Compliance
AGA3, AGA7, AGA9, OIML R137 and many additional industry applications
  ✓ Engineering Support
Expert assistance from ProMixUSA engineers – CFD modeling, compliance letters, application consulting & more

Raised Face

Engineered for Standard ANSI Raised-Face Flange Systems – The Industry’s Most Trusted Installation Method

The PRMX Type A is purpose-built for the most prevalent flow conditioner installation style in the industry: ANSI raised-face flange arrangements.

Installation is clean and dependable: the conditioner is sandwiched between two standard ANSI/ASME raised-face flanges using appropriate gaskets. One end insert directly into the downstream pipe bore for accurate alignment and secure positioning.

This configuration delivers consistent performance, straightforward maintenance, and broad compatibility with existing piping infrastructure.

Main Features & Installation Highlights
Size Availability
Nominal Pipe Sizes (NPS) ½ inch to 48 inch – comprehensive coverage for industrial needs
Material Selection
304 Stainless Steel, 316 Stainless Steel, Inconel, Monel, Duplex, Hastelloy + custom alloys
Ready Stock
Immediate shipment – 316 SS, 1″ to 20″, schedules 40 & 80 kept in inventory
Pressure Class Flexibility
Sizes ½”–20″: one conditioner works across all ANSI classes 150# to 2500# – no model variations needed
Custom Options
Special sizes, flange ratings (API, JIS, etc.), and project-specific designs – contact ProMixUSA
Flow Direction – PRMX 50E
Non-directional design – install in either orientation with no performance difference
   ✓ Flow Direction – PRMX 55E / 65E
Directional – flat side must face the meter for peak performance; bidirectional use supported even if reversed
   ✓ FOE vs. FOEL (2″ & 3″ only)
FOE: Standard raised-face (used on ≥4″ sizes)
FOEL: Offset-bore design for 2″ & 3″ – extra insertion depth for precise centering with gasket in place
Orientation Guide
Flo Align engraved notch at top dead center aligns with 90° axis – simplifies setup, especially for ultrasonic meters (no impact on other meter types)
Recommended Installation Practice
Insert into downstream piping – ensures correct centering relative to the meter and simplifies upstream spool handling
ProMixUSA PRMX Type A – Proven, Versatile, and Built for Seamless ANSI Raised-Face Integration

 

RTJF & RTJM Face

ProMixUSA Flow Conditioner

Specialized RTJ Configurations – RTJ Female (RTJF) & RTJ Male (RTJM) Subtypes

The PRMX Type D flow conditioner includes two specialized subtypes: RTJ Female (RTJF) and RTJ Male (RTJM).

For the RTJF setup, the conditioner is positioned between two ring-type joint flanges using compatible ring gaskets.

In the RTJM variant, gaskets are embedded directly into the conditioner, removing the need for separate gaskets and allowing for a more compact flange-to-flange distance.

Flow Taps

The ProMixUSA FloTaps is an optional feature available on all flanged PRMX flow conditioners. The FloTaps flange design incorporates two pressure taps: one for upstream pressure and one for downstream pressure.
These taps connect to NPT ports on the flange, allowing independent pressure readings. This enables accurate measurement of the pressure drop across the flow conditioner, serving as a reliable secondary verification for a primary metering device. Integrating a secondary meter enhances the overall accuracy and confidence in the metering system. The FloTaps option is offered on all ProMixUSA flanged flow conditioner models, ranging from 2 inches to 36 inches in size. Like all ProMixUSA products, the FloTaps can be tailored to any application and custom-manufactured using an extensive selection of materials.

Key Features

  • High Repeatability in Primary Flow Meters: Ideal for use with primary flow meters, delivering exceptional repeatability—especially when paired with calibration at a certified flow laboratory.
  • Reduced Measurement Uncertainty: When integrated with a primary flow meter, the ProMixUSA FloTaps significantly lowers overall measurement uncertainty.
  • Performance Diagnostics: Enables monitoring of flow conditioner performance, detecting issues such as blockages, hole damage, contamination, or buildup.
  • Trend Analysis: Track pressure differentials over time to identify changes in uncertainty or measurement variations.
  • Advanced Applications with Turbine Meters: When combined with a turbine meter, it provides real-time flowing Reynolds number and fluid viscosity data, eliminating the need for liquid proofs during product changes.

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