Unox 2-Way Pneumatic Proportional Hot Oil Valve

What is a 2-Way Pneumatic Proportional Hot Oil Valve?

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

What is a Hot Oil Control Valve?

A control valve is a valve used to regulate a fluid by varying the size of the flow passage in response to a signal from a controller. Control valves enable the control of pressure, temperature, flow, and level in all processes where the fluid is present. In industrial facilities, control valves ensure the transfer and control of fluids such as chilled water, hot water, steam, hot oil, and gases without loss of energy or efficiency.

What is the Principle of Proportional Operation for a Hot Oil Valve?

The proportional operation principle refers to a control system concept where the control signal is directly proportional to the error between the desired setpoint and the actual process value. In other words, the control signal is adjusted according to the magnitude and direction of the error. This type of control system is used in various applications where it is necessary to maintain a process variable at a specific setpoint or within a certain range.

In a proportional control system, the control signal is generated by a controller that compares the setpoint with the process value and calculates the error. The controller then applies a control signal proportional to the error to the process. This control signal is generally applied through a control element, such as a valve, which can adjust the flow of a fluid or the position of a mechanism to change the process variable.

General Features

• Product: 2-Way Pneumatic Proportional Hot Oil Valve (with metal bellows)

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

• Application: Pressurized Steam and Hot Oil Lines

• Connection Standard: Flanged connection (DIN1092-2)

• Pressure Class: PN25

• Safety Position: Normally Closed – Normally Open

• Sealing Class: CLASS IV Metal-to-Metal

• Max. Operating Temperature: 350 °C

• Stem Sealing: CLASS VI Pack with Metal Bellows

• Characteristics: Equal Percentage – Linear

• Hot Oil Valve does not include positioner

Material Specifications

• Body: GGG – 40.3 Ductile Iron

• Cover: GGG – 40.3 Ductile Iron

• Stem Connection Part: ST44-3 (S275J0)

• Seat: 1.4571 Stainless Steel (AISI316)