Threaded Volumetric Gas Flow Switches
Last Updated: April 1, 2025
Description
Threaded Volumetric Gas Flow Switches are devices designed to monitor and control the flow of gas through a system. They are equipped with threaded end fittings that allow them to be securely attached to the process piping, ensuring a stable and leak-proof connection. These switches are crucial for maintaining the desired flow rate of gas, providing alerts or taking action when the flow deviates from set parameters.
Working Principle
Threaded Volumetric Gas Flow Switches operate based on the principles of volumetric flow measurement, which involves monitoring the volume of gas passing through a given point in the system over time. The switches are typically installed in-line with the gas flow, where they can detect changes in flow rate. When the flow rate exceeds or falls below a predetermined threshold, the switch activates an alarm or control mechanism. This functionality is essential for ensuring system safety and efficiency, as it helps prevent issues such as leaks, blockages, or equipment damage due to improper gas flow.
Applications
Threaded Volumetric Gas Flow Switches are used in a variety of industrial applications. For example, they are employed in natural gas fractionation facilities to monitor relief valve leaks, ensuring that any unintended gas release is quickly detected and addressed . They are also used in other gas processing and distribution systems where maintaining precise control over gas flow is critical for operational safety and efficiency.
Advantages over other Volumetric Gas Flow Switches
One of the key advantages of threaded volumetric gas flow switches is their secure connection to the piping system, which minimizes the risk of leaks compared to other types of fittings. Additionally, their design allows for easy installation and removal, making them a convenient choice for systems that require frequent maintenance or reconfiguration.
Limitations
Threaded Volumetric Gas Flow Switches can be affected by certain limitations. For instance, they may experience flow blockage at zero flow due to solid impurities in the gas stream . Additionally, they might be sluggish in responding to quick changes in flow rate, which can be a drawback in applications requiring rapid response times .
Considerations
When selecting and using threaded volumetric gas flow switches, several considerations should be taken into account. Initial costs can vary depending on the materials and specifications required for the specific application. Operating expenses may include regular maintenance to ensure accuracy and prevent wear on moving parts. Durability is influenced by the construction materials and the operating environment, while accuracy can be affected by factors such as pressure and temperature fluctuations. Replacement and maintenance costs should also be considered, as these switches may require periodic calibration or part replacement to maintain optimal performance.
from Fluid Components Intl. (FCI)
The FS10A is a universal flow monitor and switch specifically designed for gas and liquid process analyzer sampling systems. The FS10A is a fast responding, highly repeatable sensor which installs easily into a standard tube tee fitting or new SP76 (NeSSI) modular manifold. The FS10A utilizes proven... [See More]
- End Fittings: In-line Flanged; In-line Threaded
- Pipe Diameter: 0.25 to 0.50
- Meter Technology: Thermal
- Mounting: Insertion
from Fluid Components Intl. (FCI)
The FLT93L inline type FlexSwitch for flow and temperature monitoring represents the first true technological breakthrough in thermal technology in over a decade. FCI is the only thermal manufacturer providing temperature compensation to ensure set point accuracy for process temperatures that vary... [See More]
- End Fittings: In-line Flanged (optional feature); In-line Threaded
- Pipe Diameter: 0.75 to 1.00
- Meter Technology: Thermal
- Mounting: In-line
from Fluid Components Intl. (FCI)
The FLT93B BASIC insertion type FlexSwitch for flow and temperature monitoring represents the first true technological breakthrough in thermal technology in over a decade. FCI is the only thermal manufacturer providing temperature compensation to ensure set point accuracy for process temperatures... [See More]
- End Fittings: In-line Threaded
- Pipe Diameter: 0.75
- Meter Technology: Thermal
- Mounting: Insertion
from Fluid Components Intl. (FCI)
The FLT93F insertion type FlexSwitch for flow and temperature monitoring represents the first true technological breakthrough in thermal technology in over a decade. This product was designed for heavy industrial environments including high temperature and high pressure. FCI is the only thermal... [See More]
- End Fittings: In-line Threaded
- Pipe Diameter: 0.25 to 1.00
- Meter Technology: Thermal
- Mounting: Insertion
from Fluid Components Intl. (FCI)
The FLT93S insertion type FlexSwitch for flow and temperature monitoring represents the first true technological breakthrough in thermal technology in over a decade. This product was designed for heavy industrial environments including high temperature and high pressure. FCI is the only thermal... [See More]
- End Fittings: In-line Threaded
- Pipe Diameter: 0.75 to 1.00
- Meter Technology: Thermal
- Mounting: Insertion
from OMEGA Engineering, Inc.
This switch package offers a complete solution for flow or no-flow switching in pipes or ducting ranging up to 16". The compact relay controller provides reliable actuation of valves, pumps or blowers rated up to 1 /2 HP. Common applications include low flow pump or process protection. To complete... [See More]
- End Fittings: In-line Threaded
- Mounting: In-line
- Pipe Diameter: 0.75 to 12.00
- Process Media Type: Liquid; Gas
from Clark Solutions
Use the 7000/8000 series flow meters for measuring the flow rate of liquids, gases, compressed air and steam in closed pipes. We also make indicating flow switches and flow transmitters for process indication and control. Meters feature a large easy to read analog dial with 270 degree pointer... [See More]
- End Fittings: In-line Threaded; Wafer
- Pipe Diameter: 0.25 to 8.00
- Meter Technology: Orifice Plates
- Mounting: In-line
from ifm electronic gmbh
Air gap provided as absolute value. Precise values at all times thanks to pressure-compensated measuring principle. Enables zero gap and clogging detection. Self-cleaning measuring channel even resists purge air pressure. Easy teaching of thresholds with just one click. Convenient operation via... [See More]
- End Fittings: In-line Threaded
- Operating Pressure: 232
- Process Media Type: Gas
- Media Temperature: 14 to 140
from Sitron
The CF12 series of thermal flow switches is designed to monitor flow status of liquids and gases and can also be used to detect level. A chain of 8 LED ’s gives the user a visual indication of the flow status of the switch. There are two red LEDs that indicate whether or not the unit has... [See More]
- End Fittings: In-line Threaded
- Mounting: In-line
- Pipe Diameter: 0.25 to 0.50
- Process Media Type: Liquid; Gas
from Litre Meter Limited
RITTER bellows-type gas meters are applicable for measuring the volume of flowing inert and dry gases and are particularly effective at high gas flows. [See More]
- End Fittings: In-line Threaded
- Process Media Type: Gas
- Mounting: In-line
- Operating Pressure: 4.35
from Brooks Instrument
Features. Wide range of flow ratings. Operating temperature range 33 to 125 °F (1 °C to 52 °C). Pressure ratings up to 500 psig / 34 bar. Two accuracy levels to choose from: 2% or 1% Full Scale. Optional high and low-flow reed switch or inductive alarm, also for safe use in explosive... [See More]
- End Fittings: In-line Threaded
- Mounting: In-line
- Meter Technology: Rotameter; Variable Area
- Process Media Type: Liquid; Gas
from Malema Sensors
The M-100X Series is an extremely sensitive flow switch. This has been engineered to monitor vital sample flow parameters for instrumentation in process control and inert blanket gases. It is used as an auxiliary alarm monitor for flow meters and is ideally suited for applications when installed on... [See More]
- End Fittings: In-line Threaded
- Mounting: In-line
- Pipe Diameter: 0.12 to 0.25
- Process Media Type: Liquid; Gas
from Bionetics
Rheotherm flow sensing probes for duct gases are easy to install and provide long-term service with little or no maintenance. The output can be in mass, standard volume or velocity units. Options for hazardous locations (intrinsically safe/explosion-proof) are available. [See More]
- End Fittings: In-line Flanged (optional feature); In-line Threaded; Sanitary
- Pipe Diameter: 1.00 to ?
- Meter Technology: Thermal
- Mounting: Insertion
from Orange Research, Inc.
Fixed-Orifice Flowmeters. Our flowmeters are designed for those applications where a rotameter is not appropriate. Consider the inherent problems of rotameters--they are difficult to read, especially with dirty or opaque fluids, have low pressure ratings and allow vertical orientation only. Now... [See More]
- End Fittings: In-line Threaded
- Mounting: In-line
- Meter Technology: Fixed Orifice
- Process Media Type: Gas
from OMEGA Engineering, Inc.
OMEGA ® in-line flowmeters offer high accuracy flow rate indication for oil or water and the ability to either control the flowrate or alarm on high or low flowrates. These units feature an SPDT switch which can be triggered at any point along the flow range. [See More]
- End Fittings: In-line Threaded
- Mounting: In-line
- Pipe Diameter: 0.50 to 0.75
- Process Media Type: Liquid; Gas
from Clark Solutions
The model DS15 flow meters work according to the proven variable area principle. The float is moved upward in a tapered tube by the flowing medium and its upper edge indicates the flow rate by means of a scale affixed on to the measuring tube. By using a float with an integrated magnet, optional... [See More]
- End Fittings: In-line Threaded
- Mounting: In-line
- Meter Technology: Rotameter; Variable Area
- Process Media Type: Liquid; Gas
from Brooks Instrument
Reliable and affordable, MT3600 metal tube variable area flow meters satisfy the operational and reliability requirements for multiple industrial purge meter applications, such as metering coolants, pump seal fluids, lubricants under pressure and opaque fluids. Featuring high-temperature and... [See More]
- End Fittings: In-line Threaded; ANSI 150# RF
- Mounting: In-line
- Meter Technology: Rotameter; Variable Area
- Process Media Type: Liquid; Gas; Steam
from Malema Sensors
The M-200X Series flow switches are engineered and field tested for sensing increasing and decreasing flow rates of gases or liquids. Pressure variation effects are minimal. This series features such versatility, economy, and accuracy that they can be used in virtually any application requiring... [See More]
- End Fittings: In-line Threaded
- Mounting: In-line
- Pipe Diameter: 0.38 to 0.75
- Process Media Type: Liquid; Gas
from Orange Research, Inc.
Variable-Area Flowmeters. Our flowmeters are designed for those applications where a rotameter is not appropriate. Consider the inherent problems of rotameters--they are difficult to read, especially with dirty or opaque fluids, have low pressure ratings and allow vertical orientation only. Now... [See More]
- End Fittings: In-line Threaded
- Mounting: In-line
- Meter Technology: Variable Area
- Process Media Type: Gas
from Clark Solutions
The flow meter and switch model DS02 works according to a modified variable area principle. The float is guided in a cylindrical measuring tube by means of a spring. The flowing medium moves the float in the flow direction. A Reed contact is mounted outside the meter in a sealed housing. When the... [See More]
- End Fittings: In-line Threaded
- Pipe Diameter: 0.25 to 1.00
- Meter Technology: Rotameter; Variable Area
- Mounting: In-line
from Brooks Instrument
Need reliable, durable flow measurement in high-pressure, high-temperature or hazardous process settings? The MT3750 metal tube variable area flow meter from Brooks Instrument is your hard-working answer. Constructed from high-strength steel, the MT3750 Series VA flow meter features a compact design... [See More]
- End Fittings: Compression; In-line Threaded
- Mounting: In-line
- Meter Technology: Rotameter; Variable Area
- Process Media Type: Liquid; Gas
from Malema Sensors
The M-50 Series low flow, flow switches monitor increasing and decreasing flow. They utilize a single moving part which responds to fluid (liquid or gas) flowing within a system. These switches are suitable for a wide range of applications in industrial, biomedical, and OEM products. The flow... [See More]
- End Fittings: In-line Threaded
- Pipe Diameter: 0.12 to 0.25
- Meter Technology: Piston
- Mounting: In-line
from Clark Solutions
The flow meter and switch model DS01 works according to a modified variable area principle. The float is guided in a cylindrical measuring glass by means of a spring. The flowing medium moves the float in the flow direction. The upper edge of the float shows the momentary flow via a burnt-in scale... [See More]
- End Fittings: In-line Threaded
- Pipe Diameter: 0.25 to 1.00
- Meter Technology: Rotameter; Variable Area
- Mounting: In-line
from Malema Sensors
The M-60 Series low flow, flow switches monitor increasing and decreasing flow. They utilize a single moving part which responds to fluid (liquid or gas) flowing within a system. These switches are suitable for a wide range of applications in industrial, biomedical, and OEM products. The flow... [See More]
- End Fittings: In-line Threaded
- Mounting: In-line
- Pipe Diameter: 0.25
- Process Media Type: Liquid; Gas
from Clark Solutions
The flow meter and switch model DS03 works according to a modified variable area principle. The float is guided in a cylindrical measuring glass. The upper edge of the float shows the momentary flow via a burnt-in scale on the measuring glass. A Reed contact is mounted outside the meter in a sealed... [See More]
- End Fittings: In-line Threaded
- Pipe Diameter: 0.25 to 1.25
- Meter Technology: Rotameter; Variable Area
- Mounting: In-line
from Malema Sensors
Malema's 2000 series variable area purge meters use a tapered borosilicate glass tube with a fine threaded regulating valve for precise flow adjustment. Various flow tube lengths such as 100 mm, 150 mm and 300 mm are available. It's compact construction with reduced dimensions facilitates easy... [See More]
- End Fittings: In-line Threaded
- Mounting: In-line
- Pipe Diameter: 0.25 to 0.75
- Process Media Type: Liquid; Gas
from Clark Solutions
The flow meter and switch model DS04 works according to a modified variable area principle. The float is guided in a cylindrical measuring tube by means of a slotted nozzle. The flowing medium moves the float in the flow direction. An externally mounted pointer indicator is magnetically coupled to... [See More]
- End Fittings: In-line Threaded
- Pipe Diameter: 0.25 to 1.25
- Meter Technology: Rotameter; Variable Area
- Mounting: In-line
from Clark Solutions
The flow meter and switch model DS08 works according to a modified variable area principle. The float is guided in a cylindrical measuring tube by means of a spring. The flowing medium moves the float in the flow direction. An externally mounted pointer indicator is magnetically coupled to the float... [See More]
- End Fittings: In-line Threaded
- Pipe Diameter: 0.50 to 1.00
- Meter Technology: Rotameter; Variable Area
- Mounting: In-line
from Clark Solutions
The flow meter and switch model DS07 works according to a modified variable area principle. The float is guided in a cylindrical measuring glass by means of a spring. The flowing medium moves the float in the flow direction. The upper edge of the float shows the momentary flow via a burnt-in scale... [See More]
- End Fittings: In-line Threaded
- Pipe Diameter: 0.50 to 1.00
- Meter Technology: Rotameter; Variable Area
- Mounting: In-line