Max 372, 370 User Manual
Vapor Eliminator
Level Controller
Operational Manual
For Models
370 & 372
370 Series
Fuel Measurement Accessories
Max Machinery, Inc. 370 Series User Manual © Copyright 2016 Rev. 2
INSTRUCTION MANUAL
370 Series Fuel Metering Accessories
TABLE OF CONTENTS
370 Series
Vapor Eliminator
General Description/Specifications ......................page 3
Vapor Eliminator — Drawings ...........................page 5
Vapor Eliminator — Performance Curves .................page 6
Level Controller
General Description/Specifications ......................page 7
Level Controller — Drawings ............................page 8
Level Controller — Performance Curves ..................page 9
372 Series
Vapor Eliminator and Level Controller
General Description/Specifications .....................page 10
Sectional Drawing.................................... page 12
Perfomance Curves ...............................pages 12-13
Max Machinery, Inc. 370 Series User Manual © Copyright 2016 Rev. 2
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Model 370
Vapor Eliminator — General Description/Specications
The Vapor Eliminator is an in-line self-venting chamber which is used in both portable and stationary Max fuel-measurement systems. It is placed directly upstream of the flowmeter- separating gases resulting from the “boiling” of
low vapor pressure fuels, and removing air bubbles resulting from aeration of the fuel tank, or leaks on the suction
side of the pump. It ensures that the flowmeter measures liquids only.
Specifications
Materials of construction:
Body 303 Stainless
Valve Orifice 303 Stainless
Valve Seal Special Nitrile
Float 304 Stainless
Miscellaneous Levers 304 Stainless
Screens 304 Stainless
Volume (approximately) 202 cc’s
Maximum Inlet Flow rate (liquid plus entrained gases)*
Gasoline 5250 cc/min
Alcohol 4375 cc/min
Diesel 3500 cc/min
Maximum Operating Pressure 100 psi
Supply Line Size 1/4” or 3/8” tubing
Maximum Temperature of Fuel
Gasoline 130°F
Alcohol 140°F
Diesel 200°F
* NOTE: Flow rates approaching the maximum of the Inlet Port will reduce the vapor elimination capabilities.
Max Machinery, Inc. 370 Series User Manual © Copyright 2016 Rev. 2
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Model 370
Vapor Eliminator — Application Description
The diagram below shows the arrangement of components in a typical fuel-measurement system. Note the proximity
of the vapor eliminator to the flowmeter. Note that the vapor vent line returns to the fuel tank; merging with the
vent line of the level control tank is an acceptable practice.
The Level Controller stores return fuel from the engine’s fuel injectors or carburetor and is replenished by fuel passing through the flowmeter. The controller operates at atmospheric pressure and will present no back pressure to the
return fuel line. Vapor elimination of this fuel is also accomplished by the controller’s internal screens.
Max Machinery, Inc. 370 Series User Manual © Copyright 2016 Rev. 2
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