Definition
Controlled downstream pressure
Installed on a pipe, the pressure regulator, also called a pressure reducing valve, brings the fluid pressure down to a lower value and keeps it constant downstream, even when the inlet pressure or the demand changes. It is self-operated and needs no external power.
Role
In practice, a pressure regulator makes it possible to:
01
Reduce the pressure
Match the network pressure to what the downstream equipment can withstand.
02
Stabilise
Keep the pressure constant despite variations in inlet pressure or demand.
03
Protect
Prevent overpressure on machines, heat exchangers, instruments and secondary networks.
04
Save
Limit losses and energy consumption, for steam as well as compressed air.
Types
The main types of pressure regulators
Direct-operated
Simple and robust: the spring and diaphragm act directly on the valve plug. For low to medium flow rates.
Pilot-operated
A small pilot regulator controls the main valve: high accuracy, even at high flow rates.
By fluid
Steam, compressed air, gases or liquids (water, oils, hydrocarbons, chemicals…): materials, seals and settings suited to the fluid and the temperature.
Examples
Examples of use
Steam networks
Reducing the pressure from the boiler house for heat exchangers, tanks and steam tracing.
Compressed air
Supplying tools, cylinders and instruments at the right pressure.
Industrial gases
Pressure reduction of nitrogen, oxygen or natural gas to the points of use.
Water
Protecting process and domestic water networks against excessive pressure.
Lube and seal oil
Pressure reduction of lube or seal oil to turbines, pumps and compressors.
Contact
A pressure regulator to overhaul or adjust?
Our team is available on +32 4 380 59 83 or at info@pkiindustries.be.
