An automatic pressure relieving device actuated by the static pressure upstream of the device, which opens in proportion to the increase in pressure over the opening pressure. ( 099)
An automatic pressure relieving device actuated by the pressure upstream of the valve and characterised by opening pop action with further increase in lift with an increase in pressure over popping pressure.
The safety relief valve is the designated weak point in the pressure washer system. If the unloader mechanism malfunctions, the safety relief valve will open and relieve accumulated pressure safely.