Oil Micro Valve for Nozzle-Mix Oil Burners

Therm process Engineering Pvt. Ltd. designs and manufactures oil micro valves for precise oil flow control at nozzle-mix burners. On an oil-fired furnace, each burner needs a steady, correct oil flow to hold the right air-fuel ratio. The oil micro valve lets the commissioning engineer set that flow finely, burner by burner. Therm process oil micro valves handle LDO, HSD, LSHS and furnace oil, at flows from 15 to 120 litres per hour. They are rated for inlet pressure up to 5 kg/cm² and oil temperature up to 120°C.

What Is an Oil Micro Valve?

An oil micro valve is a precision metering valve installed in the oil line to an individual burner. It sets how much oil that burner receives. The flow involved is small, from a few to about a hundred litres per hour, and small changes in oil flow have a large effect on flame and furnace temperature. The valve therefore needs a fine, repeatable adjustment rather than the coarse action of an ordinary globe or ball valve.

In a nozzle-mix burner, oil and air are kept separate until the nozzle. The air side is set by the combustion air system; the oil side is set by the micro valve. Getting both right gives complete combustion, a stable flame and no smoke. Across a multi-burner furnace, micro valves also let each burner be balanced, avoiding hot and cold zones. In India these valves are often searched for as “sensitrol-type” valves.

Therm process Oil Micro Valve

The Therm process oil micro valve is a precise control valve designed in-house, mainly to set the desired oil flow at nozzle-mix burners. It is part of Thermprocess’s combustion equipment range. That range also includes oil burners, oil heating and pumping units, air-oil ratio regulators, and oil motorised valves.

The valve is suitable for light and heavy oils. For heavy oils such as FO and LSHS, which must be heated to flow, it is rated to 120 °C oil temperature. This suits oil supplied through a heating and pumping unit.

Technical Specifications

Key Features

• Fine oil flow setting for individual burners.
• Wide flow range: 15-120 LPH.
• Handles light and heavy oils: LDO, HSD, LSHS, FO.
• Rated for heated oil up to 120°C.
• Designed by a burner and furnace manufacturer.

• Where It Fits in the Oil Firing System
• Heating and pumping unit Heats heavy oil to flowing viscosity and pumps it at pressure.
• Oil line and motorised valve Carries and switches oil to the burner zone.
• Air-oil ratio regulator Adjusts oil flow in proportion to combustion air for temperature control.
• Oil micro valve Sets and trims oil flow at each burner.
• Burner nozzle Atomises oil and mixes it with air for combustion.

Applications

• Oil-fired reheating furnaces in rolling mills.
• Forging and heat treatment furnaces on LDO, HSD, LSHS or FO.
• Dual-fuel burners in oil-firing mode.
• Burner commissioning and re-tuning.
• Replacement of worn or inaccurate oil valves.

Benefits

• Stable flame and complete combustion.
• Balanced burners for more uniform furnace temperature.
• Less fuel wasted through over-firing.
• Easier commissioning and maintenance.

Why Choose Thermprocess?

• Since 1997, Mumbai.
• Complete oil firing systems: burners, pumping units, regulators and valves.
• ISO 9001 & ISO 14001 certified, as stated by the company.

Related Therm process Products

• Ratio Regulators
• Oil and Air Nozzles
• Industrial Burners
• Limiting Orifice Valve (gas / air)
• Accessories

Frequently Asked Questions