Unox 3-Way Motorized On-Off Hot Oil Valve

What is a Motorized On-Off Hot Oil Valve?

A hot oil valve is a type of valve designed to control the flow of hot oil or other high-temperature liquids. These valves are typically used in industrial or commercial environments such as process plants or power stations, where high temperatures and pressures are present. Hot oil valves can be used for applications including heating, cooling, lubrication, and temperature control. They are generally made from materials that can withstand high temperatures and the corrosive effects of hot oils.

What is an On-Off Hot Oil Control Valve?

A control valve regulates a fluid by changing the size of the flow passage according to a signal from a controller. Control valves allow for pressure, temperature, flow, and level control in all fluid-containing processes. They ensure that fluids like cold water, hot water, steam, hot oil, and gases can be transported and controlled without any loss.

How Does an On-Off Hot Oil Valve Work?

The on-off principle refers to a control system where a device or system is either fully open or fully closed, with no intermediate state. This type of control is often used in simple systems that need to switch a device on or off based on a certain condition or input.

An example of on-off control is a thermostat that regulates heating or cooling. When the temperature reaches the set point, the thermostat activates or deactivates the system to maintain that temperature. If the room temperature falls below the set point, the heating system turns on; if it exceeds the set point, the system turns off.

On-off control is relatively easy to implement and understand, which makes it ideal for simple systems. However, it does not allow fine adjustments or intermediate positions, making it less precise than other control methods.

General Features of the On-Off Hot Oil Valve

• Product: 3-Way Motorized On-Off Hot Oil Valve (with metal bellows)

• Sizes: DN15 / DN20 / DN25 / DN32 / DN40 / DN50 / DN65 / DN80 / DN100 / DN125 / DN150

• Application: Pressurized steam and hot oil lines

• Function: Distributor / Mixer

• Sealing Class: CLASS VI Metal-to-Metal

• Connection Standard: Flanged (DIN1092-2)

• Pressure Class: PN16–PN25 (optional PN40)

• Maximum Operating Temperature: 350 °C

• Stem Sealing: Metal-to-Metal – PTFE – Graphite

• Characteristic: On-Off

• Fail-Safe: Maintains position when power is lost

Electric Motor Specifications for On-Off Hot Oil Valve

• Power Supply: 24 VAC / 24 VDC / 220 VAC (3-Point Floating Control)

• Actuating Force: 1000 N – 2200 N – 2500 N – 3000 N

• Stroke: DN15–50 → 20 mm; DN50–100 → 30 mm

• Stroke Completion Time: DN15–50 → 20 s; DN50–100 → 30 s

Material Specifications of On-Off Hot Oil Valve

• Body: GGG–40.3 Ductile Iron

• Cover: GGG–40.3 Ductile Iron

• Stem Connection: ST44-3 (S275J0)

• Actuator Housing: AL6063 ENJ – ABS Plastic

• Seat: Stainless Steel 1.4571 (AISI 316)