Flow Nozzles
Product Resources
Flow Nozzles
At Flowell, our Flow Nozzles are designed with precision, durability, and industry compliance in mind. We manufacture each nozzle in strict accordance with ASME MFC-3M and ANSI B31 standards, ensuring dependable performance in even the most demanding applications. Whether you’re measuring high-velocity steam, gas, or liquid flow, our nozzles provide accurate differential pressure measurement with long service life and minimal maintenance requirements.
Why Choose Flowell Flow Nozzles?
We understand the importance of accuracy and reliability in flow measurement systems. That’s why we’ve engineered our Flow Nozzles to withstand extreme conditions while maintaining a high degree of measurement integrity. Our standard construction uses stainless steel, offering excellent resistance to corrosion, erosion, and thermal stress. For specialized environments, we also offer a variety of corrosion-resistant materials upon request.
These flow nozzles are ideal for industries such as power generation, petrochemical, oil and gas, and water treatment, where long-term stability and durability are essential.
Compliance with Global Standards
Every Flowell Flow Nozzle is manufactured in accordance with ASME MFC-3M (Measurement of Fluid Flow in Closed Conduits) and ANSI B31 (Code for Pressure Piping), ensuring full compatibility with recognized global engineering practices. This guarantees that our nozzles will seamlessly integrate with your existing systems and conform to your regulatory requirements, reducing the need for custom adaptations or field modifications.
Material Versatility
Our standard material is 316 stainless steel, selected for its robustness and resistance to a wide range of corrosive environments. However, we know that not all applications are alike. That’s why we offer alternative materials, including:
- Hastelloy
- Inconel
- Monel
- Duplex Stainless Steel
- Titanium
These material options allow our customers to confidently use Flowell Flow Nozzles in high-temperature, high-pressure, or highly corrosive systems.
Flow Nozzle Styles
We offer four primary nozzle configurations to suit a range of installation and operational requirements. Each style is precisely machined and inspected to ensure performance and consistency.
1. Flanged Style
Our Flanged Flow Nozzle is designed for straightforward installation between standard pipe flanges. This style is ideal for customers seeking an easy-to-maintain and replaceable solution. The flanged configuration allows quick access for inspection or cleaning and offers flexibility during pipeline upgrades or retrofits.
- Compatible with ANSI and DIN flange standards
- Sizes from ½” to 24″ and larger upon request
- Custom pressure tap configurations available
2. Flanged Throat Tap
The Flanged Throat Tap Nozzle takes the convenience of the standard flanged model a step further by incorporating the downstream pressure tap directly into the nozzle body. This integrated design simplifies piping layouts and minimizes potential leak points or misalignments.
- Streamlined installation with fewer components
- Reduced installation errors due to integral design
- Ideal for systems where space and accuracy are critical
3. Weld-In Style
Our Weld-In Flow Nozzle is intended for permanent installations where optimal sealing and long-term stability are paramount. A machined ring on the outside diameter of the nozzle allows it to be welded directly between two pipe sections. The nozzle body resides entirely within the pipe, preserving a clean flow profile and minimizing flow disturbances.
- Fully contained within the piping
- Suited for high-pressure, high-temperature service
- Excellent choice for power plants, refineries, and chemical processing
4. Holding Ring Style
The Holding Ring Flow Nozzle offers a non-intrusive installation method, especially valuable in systems where external welding is not practical. The nozzle is inserted within the pipe and held in place with an internal ring and welded pins that pass through the pipe wall. This design provides a secure, sealed fit without requiring extensive external modifications.
- Easy to install in existing pipelines
- Secure mounting with minimal intrusion
- Often used in retrofit projects or custom layouts
Benefits of Using Flowell Flow Nozzles
When you choose our flow nozzles, you benefit from a solution built for long-term precision and ease of use. Key advantages include:
- High Accuracy and Repeatability: Due to their smooth contours and engineered geometry, our nozzles offer excellent flow characteristics and predictable pressure differentials. They are especially effective in high-velocity and non-laminar flow applications where other devices might fail to maintain accuracy.
- Low Permanent Pressure Loss: Our nozzles are designed to optimize pressure recovery downstream, minimizing permanent pressure loss. This results in better energy efficiency and lower operating costs over the long term.
- Minimal Maintenance: Thanks to their lack of moving parts and rugged design, our nozzles require virtually no maintenance once installed. This reduces downtime and total cost of ownership, which are important factors for critical infrastructure and continuous process operations.
- Long Service Life: The materials and construction methods we use allow our Flow Nozzles to last for decades, even under harsh conditions. Erosion resistance, thermal tolerance, and corrosion resistance are all engineered into the base design.
Applications Across Industries
Our Flow Nozzles are used across a broad spectrum of industries and processes, including:
- Power Generation: For high-pressure steam flow in turbines and boilers
- Oil & Gas: For gas lift, flare measurement, and pipeline balancing
- Chemical Processing: For aggressive fluids and demanding process conditions
- Water & Wastewater: For plant influent/effluent monitoring
- Pharmaceutical & Food: Where cleanliness and stainless construction are essential
We can also provide specialized configurations for high-viscosity fluids, multiphase flow, or pulsating systems.
Custom Engineering and Support
We understand that off-the-shelf solutions don’t always meet every need. That’s why we offer engineering support for custom applications. We’re ready to assist you from concept to installation, from CAD drawings and pressure drop calculations to material certification and inspection documentation.
Whether you need a modified bore profile, unique tap arrangement, or specialty material, our in-house engineering team is equipped to help you design and specify the right nozzle for your project.
Testing and Quality Assurance
Every Flowell Flow Nozzle goes through stringent quality control procedures, including:
- Dimensional inspection using precision metrology
- Material traceability and certification
- Weld inspection (for welded styles)
- Hydrostatic and/or pressure testing as required
- Optional NDT (non-destructive testing) services upon request
Our commitment to quality ensures that each nozzle we ship performs exactly as intended in your system.
Installation and Integration
We provide installation guidelines, flange torque specifications, and best practices for tap alignment and signal conditioning. Our team is available to consult with your engineering or maintenance staff to ensure smooth integration into your existing flow measurement system.
We also work with major instrumentation providers to ensure compatibility with differential pressure transmitters, manifolds, and flow computers.
Let’s Get Started
Whether you’re designing a new system or upgrading an existing one, our Flow Nozzles provide a dependable, standards-compliant, and efficient solution for flow measurement. Contact us today for a consultation or quote and let us help you determine the best nozzle configuration and material for your application.