The backflow preventers are utilized in pneumatic as well as hydraulic systems. They are available in various types of forms and used for controlling the rate flow of various types of liquids within systems. Depending on the application to be served, there are three types of valves.
This type of valve is incorporated with a fine thread or small port which is exactly in shape like a needle. It is used for relative flow rates and provides precise regulation of liquid which is being flowing through the system. They are beneficiary units employed in flow metering functionality when calibrated, constant or low flow level rate is required.
Pressure Compensated Valves
The pressure compensated valves are crafted to supply adjustable controlled flow levels which are independent of fluctuations in outlet or inlet pressure higher than minimum rate of pressure differential. These types of Wilkins backflow preventers are obtainable with or without reverse flow checking units. There is a rotary adjustment mechanism and an integrated key lock unit inbuilt with these devices. They are used for small to large industrial applications.
Proportional Control Valves
These systems keep the flow of fluid or air consistent within the hydraulic or pneumatic system. These units are inbuilt with multiple flow range levels which allow users to match the requirement of their systems in order to hold highest control. The devices are inbuilt with closed or open loop control units and are employed with all kinds of applications.
The main objective of all these plumbing valves is to enable users to adjust the flow and pressure level of liquids as according to requirements. All these types of plumbing valves are designed with best quality of materials so as to serve long service life along with high durability and reliability to users. So, get any of testing procedure of backflow preventer in order to own high performance and reliability.