Protect your blowers from pressure spikes with relief valves. If the air pressure exceeds that of the valve, it will open to prevent overpressurization of the blower.
Before airflow falls to zero, these vacuum relief valves open to allow air to pass through, mitigating deadheading conditions that can cause blower failure. They are preset to activate when pressure falls to about 90% of deadhead pressure level and can be adjusted to lower settings if desired. Vacuum relief valves should be used with regenerative blowers in all vacuum applications.
Safeguard blocked-off blowers from overheating by using these pressure relief valves. They work during vacuum or pressure operation to bleed off air and avoid overpressure conditions.