Chemical industry Positive Displacement Flowmeter High Accuracy Rotary Piston

MOQ： 1Set
Price： Negotiable
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Payment Terms	Western Union,T/T,D/P,D/A,L/C
Supply Ability	100PCS/Month
Delivery Time	5-8 work days
Packaging Details	Carton
Name	Rotary Piston Flowmeter
Flow Range	Varies by model, typically 0.1 to 1000 L/min
Installation Orientation	Horizontal or vertical installation possible
Accuracy	±0.1% to ±0.5%
Materials	Stainless steel, aluminum, or plastic
Repeat Ability	±0.1%
Pressure Rating	Up to 400 bar (varies by model)
Measurement Principle	Positive Displacement
Fluid Compatibility	Suitable for viscous liquids, oils, and chemicals
Power Supply	24 VDC or battery-powered options
Temperature Range	-40°C to 150°C
Brand Name	QINWEIYB
Model Number	QWLZB-48
Place of Origin	China

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Product Specification


Payment Terms	Western Union,T/T,D/P,D/A,L/C	Supply Ability	100PCS/Month
Delivery Time	5-8 work days	Packaging Details	Carton
Name	Rotary Piston Flowmeter	Flow Range	Varies by model, typically 0.1 to 1000 L/min
Installation Orientation	Horizontal or vertical installation possible	Accuracy	±0.1% to ±0.5%
Materials	Stainless steel, aluminum, or plastic	Repeat Ability	±0.1%
Pressure Rating	Up to 400 bar (varies by model)	Measurement Principle	Positive Displacement
Fluid Compatibility	Suitable for viscous liquids, oils, and chemicals	Power Supply	24 VDC or battery-powered options
Temperature Range	-40°C to 150°C	Brand Name	QINWEIYB
Model Number	QWLZB-48	Place of Origin	China
High Light	High Accuracy Rotary Piston Flowmeter ，Chemical industry Positive Displacement Flowmeter ，High Accuracy Rotary Piston Flow Meter

Rotary Piston Flowmeter Suitable For High-Viscosity Fluids Without External Power Supply

A rotary piston flowmeter is a type of flowmeter that accumulates the volume of fluid by counting the number of rotations of the rotary piston within the metering chamber.

Core Advantages

Extremely high measurement accuracy: The accuracy is usually within ±0.2% to ±0.5%, making it one of the most accurate flowmeter types, especially suitable for trade handovers.
Insensitive to viscosity changes: The measurement principle is based on volumetric displacement and is minimally affected by fluid viscosity. The higher the viscosity, the smaller the internal leakage, and the better the performance. It is an ideal choice for measuring viscous media such as heavy oil, crude oil, lubricating oil, and asphalt.
Wide measurement range: It can reach 10:1 or higher.
Direct mechanical measurement without external power (basic model), ensuring high reliability.
Low starting flow rate, capable of accurately measuring low-speed flows.

Comparison with Other Positive Displacement Flowmeters

Characteristics	Rotary Piston Flowmeter	Elliptical Gear Flowmeter	Scraped Surface Flowmeter
Moving Parts	One C-shaped rotating piston.	One pair of intermeshing elliptical gears.	Several radially sliding scrapers.
Applicable Viscosity	Highly viscous, especially suitable for high-viscosity fluids.	High.	High.
Complexity and Cost	Moderately high.	High (difficult gear processing).	High (more moving parts).
Dirt Tolerance	The worst, most sensitive to impurities.	Poor.	Relatively good (some designs can tolerate small particles).
Typical Applications	Precision measurement of fuel oil, lubricating oil, and clean chemical raw materials.	Similar, but more common in food	Crude oil, refined oil products, liquefied gas, etc.

Typical application scenarios

Petroleum and petrochemical industry (core market): Retail measurement of gasoline and diesel at gas stations (core of fuel dispensers); trade handover of fuel oil, lubricating oil, and base oil at oil depots; process measurement of heavy oil and residual oil in refineries.
Chemical industry: Batch shipment or process batching of resins, solvents, additives, and high-viscosity chemicals.
Food and oil industry: Filling and measurement of viscous foods such as edible oil, syrup, chocolate, and honey.
Ship bunkering: Key measurement equipment for fuel oil bunkering of ships, requiring high precision and reliability.

Rotary piston flowmeters are the "precision measurement experts" in the family of positive displacement flowmeters, especially in the field of trade measurement for "high-viscosity clean liquids", where they have established an unshakable position.

Company Details

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Manufacturer,Distributor/Wholesaler,Exporter 
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Establishe 
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5 million-10 million
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500~800 
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