Pressure Reducing Valves
The new Clorius Controls pressure reducing valves G1PR and H1PR maintain the pressure downstream of the valve to an adjust set point value. The pressure controllers from the Danish manufacturer lower large and variable pump pressure to stabilise the flow in the plant. The valves are available through Dutch distributor Siscon Instruments.
Clorius Controls says its pressure reducing valves G1PR and H1PR are easy to install and adjust, require no maintenance and are self-acting. Furthermore, no external power is needed and the valves are tolerant to media with low quantities of small particles, as well as wet and dry steam. The valves are direct acting – the capillary tube allows large volumes compared to compact pressure reducing valves.
The medium flows through the free area between the seat and cone in the direction indicated by the arrow on the body. The position of the valve cone determines the flow rate and consequently the pressure ratio across the valve. The downstream pressure is transmitted through the compensation chamber and the capillary to the diaphragm, where it is converted into a positioning force. This position force is adjusting the cone with dependence on the force of the operating springs. The spring force can be adjusted by using the set point adjuster. The valve cone is pressure balanced. The fluid pressure acts onto the bottom and top surfaces of the cone at the same time. In this way, the forces produced by the fluid pressure on the cone, are compensated.
Image courtesy of Clorius Controls