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Which LPG Manifold should I choose LOT or VOT

July 22, 2020

LPG has had a big role to play in today’s manufacturing world. With more and more people switching over to the exceptional fuel, there exists a visible confusion on what kind of manifold to choose. As explained in the earlier blog on parameters to choose your manifold installation, the major factors are

  • Fuel consumption
  • Installation land size
  • Distance from the plant
  • There are subsets for each of the above points and based on those subsets we have different kinds of installations. Out of those installations, we will be concentrating on the following ones and comparing the same.
  • 33Kg VOT Installation
  • 33 Kg LOT Installation

There are other variations of LOT Installation called SUPER LOT and SUPER LOT Plus. We will share a brief idea on the same also.
The base difference between VOT and LOT Installation is that in VOT installation, LPG is converted through natural vapourisation while in LOT installation it is through an external energy channeled through a vapouriser.  The name itself stands for the same. VOT means Vapour Off Take while LOT means Liquid Off Take. Before we delve further, you need to understand what natural vapourisation is.
Heat due to ambient temperature is transferred through the walls of the cylinder to LPG liquid and is converted to vapour. It depends on the temperature outside the cylinder, liquid level in the cylinder and what is the composition of LPG. Artificial vapourisation is exactly the opposite, where indirect heat is applied to convert LPG.

VOT manifold installation

  • LPG Vapor withdrawal from the cylinder
  • VOT cylinder manifold works on natural vaporization principle
  • Higher number of cylinders, higher natural vaporization
  • Space required for installation is huge compared to LOT
  • Used for relatively lower LPG requirements

Now that we have established a fair differentiator from VOT & LOT system and specified the various characteristics of the same we have two different upgraded versions of the LOT system called as SUPER LOT or SLOT and SUPER LOT PLUS or SLOT PLUS.

LOT manifold Installation

  • LPG Liquid  withdrawal from the cylinder
  • LOT cylinder manifold works on   artificial vaporization principle
  • Vaporization rate depends on capacity of vaporizer
  • Space required for the same volume is less compared to VOT
  • Used for high LPG requirements

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