Blower Relief Valve Vacuum Capabilities Pressure Preset Limit 249 in wc Outside Diameter 5 in Inlet Size 2 in Inlet Type NPT Compatible Manufacturer Part Number 2EPP2 2EPP3 2EPP6 2EPP7 2EPR3 2EPR4 2VFB50-6.16-7W 2VFB60-8.4-7W Compatible Grainger Part Number 2EPP2 2EPP3 2EPP6 2EPP7 2EPR3 2EPR4 38UW81 38UW82 Maximum Operating Pressure 15 psi Minimum Operating Pressure 1 psi Overall Length 6.31 in