FREL – Fully Adjustable Priority Valve

How a Priority Flow Control Valve Works

A priority flow control valve supplies the main function with a fixed, pre-set flow rate, while the remaining flow can be used for secondary functions such as cylinders or diverted/shunted to the tank.

This is a simple and efficient valve that:

• Ensures no loss of power to the main function when an auxiliary cylinder or motor is operating

• Is commonly used for add-on equipment such as rock crushers and hydraulic hammers for excavators, wheel loaders, and other construction machinery

Fully Adjustable Priority Valve – FREL

SUN Hydraulics’ new FREL is a fully adjustable priority valve, where the priority flow is manually set. Previously, a needle valve would have been required to achieve this level of control.
FREL fits in a T-17A cavity and handles a total flow of 120 l/min, of which 66 l/min can be prioritized, and the remainder sent to the bypass. The priority flow is relatively independent of the pressure on the bypass port. This means that the working pressure on the bypass port can exceed the pressure on the priority port.

Priority Valve with Fast Delivery

FREL is fully adjustable, which means you don’t need to pre-order the valve with a fixed setting. This gives you greater flexibility – especially when short lead times are critical. We often keep FREL in stock, making it available for immediate delivery.