Outward Relief Valves are designed for use in electronic and electro-optics equipments. The valves have pressure relief only. Standard settings range from 0.5psid to 5.0psid pressure. These valves are tamper-proof and require no field maintenance. A typical application for pressure relief valve is a safety valve for pneumatic pipelines as used with BLD8042/01. Note: all of our two way relief valves can also be set for inward or outward only pressure settings.