Positive Displacement Flow Meters

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M-XXLPG Series Precision Positive Displacement Flow Meter – LPG & Refrigerant Applications

M-XXLPG Series Precision Positive Displacement Flow Meter – LPG & Refrigerant Applications

M-XXLPG Series Precision Positive Displacement Flow Meter is engineered for highly accurate measurement of liquefied gases, providing reliable flow monitoring for both transfer and process control applications. Constructed with a lightweight yet robust aluminum body, this meter is ideal for industrial environments where durability, precision, and safety are essential.

The meter’s internal mechanism consists of dual-bladed displacement rotors and a central single blocking rotor, rotating synchronously within three cylindrical bores. This design eliminates metal-to-metal contact, ensuring smooth operation, long service life, and consistent measurement. The blocking rotor is timed via a gear system that maintains precise rotational synchronization, producing a continuous capillary seal between unmetered and metered liquid.

Key Features and Benefits:
Flow accuracy of ±0.2%, ensuring precise LPG dispensation
Flow range from 38 to 550 L/min, accommodating various industrial needs
Inlet and outlet connections sized at 2″ for easy integration into pipelines
Equipped with essential accessories: Meter Body, Strainer, Air Eliminator, Mechanical Register, and Differential Valve for improved flow control
Ideal for Class 10 liquefied petroleum gases such as butane, isobutene, pentane, ethane, propane, and certain refrigerants

Optional Replacement Accessories:
All standard components can be purchased separately, making maintenance and part replacement convenient without downtime.

Global Naming Variations:
USA: LPG Positive Displacement Flow Meter
UK: Positive Displacement Meter for Liquefied Gas
Germany: Flüssiggas-Durchflussmesser mit Positivverdrängung
France: Débitmètre à Déplacement Positif pour GPL
Japan: 液化石油ガス用正排気量流量計
Egypt: عداد التدفق الإيجابي للغاز المسال
Nigeria: LPG PD Flow Meter
Iran: فلومتر جابجایی مثبت برای گاز مایع

Applications:
M-XXLPG Flow Meter is designed for safe, accurate measurement and dispensing of liquefied petroleum gases in industrial facilities, LPG filling stations, refrigerant handling systems, and chemical processing plants. The addition of the Differential Valve allows for smoother operation under varying pressure conditions, making this meter a reliable solution for critical gas transfer applications.

Summary:
The M-XXLPG Series Precision Positive Displacement Flow Meter combines advanced rotor technology, rugged aluminum construction, and optional maintenance-friendly components to deliver high-precision, consistent measurement for LPG and other low-temperature liquefied gases. Its global acceptance and multiple naming conventions reflect its versatility and wide usability across industrial and commercial applications worldwide.

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M-XX series meter is positive displacement meter for liquids. They are designed for liquid metering both in transfer and process control applications. Thanks to their design they are easy to keep and can suit a wide range of applications. The meter consists of a housing where two bladed displacement rotors and a central single blocking rotor turn in synchronized relationship within three cylindrical bores with no metal-to-metal contact within the meter element. Each rotor is supported on either end by a bearing plate through which the rotor shafts protrude.

The bladed displacement rotors, alternately move through the two half-cylinder bores of the meter element, while the single blocking rotor rotates within its bore in such a way as to produce a continuous capillary seal between the unmetered upstream product and the metered, downstream product. At one end of each rotor shaft is a timing gear. The blocking rotor gear, having twice the number of teeth of each of the displacement rotor gears, rotates at half the RPM of the displacement rotors.

M-XXLPG Positive Displacement Flow Meter, including the following equipment:

  1. Meter Body
  2. Strainer
  3. Air Eliminator
  4. Mechanical Register
  5. Differential Valve
Class 10 Application: used for liquefied petroleum gas(LPG), including butane, isobutene, pentane, ethane, freons, and propane.

Technical Specification:

Model No

M-50LPG

Body Material

Aluminum

Accuracy

±0.2%

Flow Range

38-550L/min

Inlet/Outlet

2″

Note: When placing an order with us, please inform us what liquid the flow meter will be used for, the working pressure, and working temperature, so that we can provide the correct additional equipment for this flow meter.

Application:
Class 10 liquefied petroleum gas(LPG), including butane, isobutene, pentane, ethane, freons, and propane.

About Haibo
Zhejiang Haibo Petroleum Equipment Co., Ltd.

Zhejiang Haibo Petroleum Equipment Co., Ltd., established in 2017, is a certified enterprise located in Yongjia County, Wenzhou City, Zhejiang Province—recognized globally as the world’s largest manufacturing base for petroleum equipment and the well-known hometown of pumps and valves in China.
Our products are widely used in Fluid Control Systems, Energy Systems, Measurement Systems, Piping Systems, and Hydraulic Systems, serving petroleum companies, military units, oil depots, tank truck manufacturers, and petrol stations worldwide. Province—recognized globally as the world’s largest manufacturing base for petroleum equipment and the well-known hometown of pumps and valves in China.
At Haibo, we are backed by a team of senior industry experts with more than 20 years of professional experience in the petroleum equipment and fluid control sectors. Their deep technical knowledge and industry insight ensure that every product and solution we deliver meets the highest standards of quality, reliability, and performance.

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