HBS pressure relief valves

Pressure relief valves are installed generally in derivation between a pressurized line and the tank. Relief valves are normally closed elements for the pressure control used to:

• limit the pressure in the circuit at the setting value;
• protect the other elements (pumps, cylinders, motors, other valves) from pressure peaks that could damage them.

When setting pressure is reached, the relief valve connects the line where is installed to the tank, avoiding to exceed the setting value in that line. HBS relief valves are available in two versions:

• direct;
• piloted.

For greater flows, it is better to use the piloted valve, because the direct valve would require the use of  a bigger body and a bigger spring, causing cumbersome problems, setting difficulty and response slowness. Moreover, HBS pressure relief valves can be:

• single, to control the pressure on only one line of the circuit.