Liquid Controls M25 Series 3 in. Flanged 300 GPM Meters

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Liquid Controls
3 in.
300 GPM
74.00 LBS

Call for Pricing: (800) 333-3331

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Liquid Controls (LC) M-Series rotary motion positive displacement (PD) meters for custody transfer applications requiring Weights and Measures approved accuracy. Liquid Controls M and MA Series truck meters provide the industry’s most time-proven and respected records of superior value and performance. LC meter accessories include air eliminators, strainers, valves, and a choice of mechanical or electronic registers and printers for presetting, totalizing deliveries, and printing tickets. Typical applications of the LC meter and accessories include tankwagons delivering fuel to homes for domestic heating or gasoline to service stations; bobtails delivering LPG to homes and farms; and aviation refuelers delivering avgas or jet fuel into aircraft. Other applications include metering of anhydrous ammonia and other farm-related products from vehicle-mounted tanks.

Note: Order Form required to purchase this product. To expedite the process please download the form located in the Order Form Download tab, fill it out, then submit it with your online order.


  • Sustained accuracy: No wear from metal-to-metal contact inside the measuring chamber means minimal deterioration in accuracy over time, fewer recalibrations, and longer service life. Meters conform to NTEP/NIST and International Weights and Measures accuracy requirements as well as U.S. Military specifications.
  • Wide temperature range: Products can be metered accurately from -40° F (-40° C) to 160° F (71°C).
  • Wide viscosity range: LC meters can accurately meter products from less than 30 SSU (less than 1 centipoise) to 1,500,000 SSU (325,000 centipoise).
  • Maximum adaptability: Right angle design with choice of stock or custom elbows/ fittings provides unequaled mounting flexibility to meet your installation requirements.
  • Rated to 150 PSI / 10.5 BAR



  • Flow: L-R
  • Unit of Measure: WH GAL
  • Seals: Nitrile
  • W&M Approval: NIST
  • Max GPM Rating: 300 GPM
  • Flange Size: (in) 3 in. Standard
  • Material of Construction: Aluminum
  • Temperature Rating: -40ºF to 160ºF
  • PSI: 150 PSI
  • Class: Class 1 - Refined petroleum products, biodiesel


  • Strainer Type: STD
  • Mesh: 40
  • Air Eliminator: MECH


  • Valve Type: MECH
  • Valve Outlet: FRONT

Order Form Download

Please download and fill out this order form to submit with your order

Class 1 M-Series Refined Fuel Form (PDF Download)