Relief Valves

Relief Valves

Relief valves are available in two types, spring or weighted type.
Spring type valves are typically the most popular and least expensive for a given flow and pressure. A spring is used to provide a force against a plate that prevents the air or gas from escaping as long as it operates below the set point of the valve.

If the air or gas pressure on the plate exceeds the force exerted by the spring, the valve opens allowing air to bleed off and preventing over-pressurization of the blower.