PFS LF Series Low Flow Turbine Flow Meter

The PFS LF Series Low Flow Turbine Flow Meter delivers accurate, repeatable flow measurement for very low flow applications. It supports flow rates from 0.007 to 3.00 gpm, making it a strong choice when standard turbine meters exceed the required range.

This low flow turbine meter uses stainless steel construction options, selectable rotor materials, and multiple O-ring choices. As a result, teams can match the meter configuration to the process conditions. In addition, the LF Series offers NIST traceable calibration, retrofit kit availability, and factory refurbishment options.

Westech Industrial offers the PFS LF Series Low Flow Turbine Flow Meter in Canada Wide. Our team can help with product selection, configuration support, service needs, and project integration. Westech also supports custom fabrication requirements, including related panels, skids, shelters, and measurement assemblies for complete industrial solutions.

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Description

Accurate Measurement for Very Low Flow Rates

The PFS LF Series Low Flow Turbine Flow Meter gives operators reliable measurement in applications with very small flow rates. Its range starts at 0.007 gpm and extends to 3.00 gpm, depending on the selected size. Therefore, it suits applications that need close flow control and repeatable measurement. The low flow turbine meter also offers repeatability of ±0.25% over the flow range. This repeatability helps teams track process performance and maintain consistent measurement results.

Multiple Meter Sizes for Application Matching

The LF Series includes meter sizes from LF020 through LF175. Each size supports a defined nominal flow range, so users can match the meter to the required process conditions. For example, smaller sizes support extremely low flows, while larger sizes handle higher low-flow applications. This flexibility helps teams avoid oversizing. It also supports better measurement performance across the selected operating range.

Durable Material Options

The meter body and internals use 316 stainless steel as the standard material. In addition, rotor options include 17-4 PH, Nickel 200, and duplex stainless steel. These options help teams select materials based on process compatibility. Bearing selections also support different operating needs, including stainless steel ball bearings and carbon composite sleeve bearings. As a result, the LF Series can suit many low-flow measurement requirements.

Connection and Seal Flexibility

The PFS LF Series Low Flow Turbine Flow Meter includes several connection options. The PFS LF Series supports NPT and 37° AN flare connections, with additional meter end fitting configurations available depending on the selected model. Options include tube fitting, F150, ⅜” NPT, ¼” NPT, ⅜” AN flare, and ½” BSPP configurations. O-ring options include Buna-N, Viton, Neoprene, Silicone, FFKM, and EPR. Therefore, teams can configure the meter around process, installation, and compatibility needs. This flexibility also helps simplify specification for new systems and retrofit projects.

Built for Service and Long-Term Use

The LF Series supports ongoing service needs through retrofit kits and factory refurbishment. This can help extend equipment life and support existing installations. In addition, NIST traceable calibration supports documented measurement confidence. Westech Industrial can assist with product support, service coordination, and integration planning Canada Wide.

Applications

The PFS LF Series Low Flow Turbine Flow Meter suits applications that need accurate, repeatable measurement at very low flow rates. It can support new installations, retrofit work, and custom measurement packages.

  • Low-flow process measurement
  • Small flow line monitoring
  • Test stands and calibration-related systems
  • Metering skids and packaged measurement assemblies
  • Applications requiring NIST traceable calibration
  • Retrofit projects using available LF Series retrofit kits
  • Industrial systems requiring compact turbine flow measurement
  • Custom fabricated measurement panels, skids, or assemblies

Documents

PFS_LF Series Low Flow Turbine Flow Meters_Data Sheet_July2026_Westech.pdf

Manufacturer info

Primary Flow Signal designs and manufactures flow measurement solutions for liquid, gas, and steam applications. Its product offering includes Venturi flow meters, wedge-type meters, orifice flow elements, flow nozzles, and custom-engineered differential pressure measurement products for industries such as water and wastewater, oil and gas, power generation, industrial processing, automotive, and cryogenic service.

SPECS

Product Series:
PFS LF Series Low Flow Turbine Flow Meter.
Meter Sizes:
LF020, LF030, LF040, LF050, LF060, LF070, LF080, LF090, LF100, LF125, LF150, LF175.
Flow Rate Range:
0.007 to 3.00 gpm; 0.026 to 11.356 L/min.
Repeatability:
±0.25% over flow range.
Operating Temperature:
-70°F to +525°F with special coil.
Operating Pressure:
Up to 5,000 psi, end fitting dependent.
Connections:
NPT, 37° AN flare, tube fitting, F150, BSPP, and other options by configuration.
Meter Body and Internals:
316 stainless steel, with other options available by consultation.
Rotor Materials:
17-4 PH, Nickel 200, or duplex stainless steel.
Bearing Options:
440C stainless steel ball bearing with reinforced retainer, or carbon composite sleeve bearing.
O-Ring Options:
Buna-N, Viton, Neoprene, Silicone, FFKM, and EPR.
Calibration:
NIST traceable calibration.
Service Support:
Retrofit kits and factory refurbishment available.
Mounting Hub:
1" MNPT mounting hub.
Dimensions:
LF020–LF090: A 3.062" (7.78 cm), B 2.500" (6.35 cm); LF100–LF175: A 3.062" (7.78 cm), B 3.000" (7.62 cm).

PRODUCT FAQ's

What is the PFS LF Series Low Flow Turbine Flow Meter used for?
The PFS LF Series Low Flow Turbine Flow Meter measures very low flow rates in industrial applications. It supports flow rates from 0.007 to 3.00 gpm.
Is the PFS LF Series available through Westech Industrial?
Yes. The PFS LF Series Low Flow Turbine Flow Meter is available through Westech Industrial Canada Wide.
What makes this a good low flow turbine meter?
It offers a broad low-flow range, ±0.25% repeatability, stainless steel construction, multiple rotor options, and NIST traceable calibration.
Can Westech help with product selection?
Yes. Westech can help review your flow range, pressure, temperature, connection needs, and material requirements. This helps align the meter with your application.
Can Westech support custom fabrication around this product?
Yes. Westech offers custom fabrication capabilities for related panels, skids, shelters, and integrated measurement assemblies. This support helps connect the meter into larger process systems.
Are retrofit kits available for the LF Series?
Yes. The LF Series includes retrofit kit availability. Factory refurbishment is also available for long-term product support.
What connection options are available?
Connection options include NPT, 37° AN flare, tube fitting, F150, and BSPP configurations. Additional options may depend on the selected model.
What materials are available for the LF Series?
Standard body and internal materials include 316 stainless steel. Rotor options include 17-4 PH, Nickel 200, and duplex stainless steel.