LoT (Liquid Off-Take)
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What is Liquid Off-Take (LoT)?
LoT (Liquid Off-Take) refers to the withdrawal of LPG in liquid phase from a storage vessel (bullet / mounded vessel / sphere) instead of vapor phase.
In LPG plants, LPG exists in equilibrium:
• Liquid phase at the bottom
• Vapor phase at the top
LoT means taking LPG from the liquid section for:
• Bottling
• Bulk transfer
• Auto LPG dispensing
• Tank truck filling
LOT Uses
Why Liquid Off-Take is Used
Liquid off-take is preferred because:
- Allows high flow rate
- Ensures accurate metering
- Suitable for large volumes
- Required for bottling & bulk loading
- Maintains consistent product quality
Vapor off-take is only used for small consumption or pressure balancing.
Why Liquid Off-Take is Used
Application — LoT Usage
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LPG bottling plant — Mandatory
-
Auto LPG station — Mandatory
-
Bulk LPG supply — Mandatory
-
Tank truck loading — Mandatory
-
Domestic vapor supply — Not used
LoT System Components
A standard LoT line consists of:
-
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Liquid outlet nozzle from storage vessel
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Excess flow valve (EFV)
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Remote operated valve (ROV)
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Strainer
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Pump (LPG pump)
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Non-return valve (NRV)
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Meter / filling carousel / dispenser
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Emergency shut-off valves
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Safety Importance of LoT
Because liquid LPG expands rapidly when released:
-
LoT lines are high-risk
Must have:
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Excess flow valves
-
Emergency isolation
-
Fire-safe valves
-
Proper earthing
Any failure in LoT can cause:
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Massive vapor cloud
-
Fire / explosion hazard
LoT vs VoT (Vapor Off-Take)
Aspect — LoT (Liquid Off-Take) — VoT (Vapor Off-Take)
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Phase — Liquid — Vapor
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Flow rate — High — Low
-
Usage — Bottling / Bulk — Small appliances
-
Metering accuracy — High — Low
Regulatory Requirements (India)
LoT systems must comply with:
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Gas Cylinder Rules, 2016
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PESO approvals
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OISD-144 / OISD-150
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IS 5572 & IS 15319 (hazard classification)
Any modification to LoT piping requires PESO approval.
Frequently Asked Questions
Why Liquid Off-Take is Used
Senior Companionship and Care is a service designed to provide emotional support, assistance with daily activities, and companionship to older adults. It aims to enhance their quality of life, ensuring they receive the care they need while maintaining their independence and dignity.
Regulatory Requirements (India)
If your loved one is experiencing loneliness, difficulty with daily tasks, or needs assistance with medication, personal care, or transportation, Senior Companionship and Care could be beneficial. Our caregivers are trained to provide the right level of support based on their individual needs.
Safety Importance of LoT
Yes, all our caregivers undergo comprehensive training and background checks. They are experienced in providing companionship, personal care, and other essential services to seniors. We prioritize hiring compassionate individuals who are dedicated to delivering high-quality care.