product data sheet NACE COMPLIANT PRESSURE RELIEF VALVES ■ All Valve Materials Compliant with NACE MR0175/ISO 15156 ■ Materials Used: - MP35N - 316L - Elgiloy ■ Standard Cracking Pressures from 80 to 5900 psid The Lee Company’s new field proven .281 inch diameter Pressure Relief Valves are made with materials specifically chosen for optimal performance in harsh duty applications, such as those in the oil tool industry. These new high speed, direct acting valves are constructed entirely of corrosion-resistant materials that are compliant with NACE specification MR0175/ISO 15156. Standard valves are available in forward and reverse flow directions with cracking pressures from 80 to 5900 psid. Custom models are also available with cracking pressures as high as 12,000 psid. Each Lee pressure relief valve is 100% tested and inspected to ensure reliable consistent performance. Contact your local Lee Sales Engineer for additional information and technical assistance. .281 PRI® (up to 3000 psi system pressure) RELIEF FLOW REVERSE The Lee Company, 2 Pettipaug Rd., P.0. box 424, Westbrook, CT 06498-0424 Tel: 860-399-6281 Fax, Order Entry: 860-399-7058 Fax, Technical Information: 860-399-7037 Web: www.TheLeeC

LEE PART NUMBER MINIMUM CRACKING FLOW POINT (MIL-PRF-83282; REVERSE PRESSURE (psid)* MAX. LOHM RATE** MIN. GPM AT (psid) * Leakage at Minimum Cracking Pressure & Minimum Shutoff Pressure: 1 mL/Minute Maximum. ** The Lohm is a measure of flow resistance. Example: One Lohm will permit a flow of 100 GPM of water at 25 psid at 80° F. Additional information can be found at www.TheLeeCo.com. t All valves thoroughly cleaned to remove Lee test fluid. lee Company, 2 PETTIPAUG RD., P.0. Box 424, WESTBROOK, CT 06498-0424 PDS 103 4/12 Fax, Technical Information: 860-399-7037 Web: www.TheLeeCo.com