Specifications include, but are not limited to: 2.01 EQUIPMENT - GENERAL A. Products Requiring Electrical Connection: Listed and classified by Underwriters Laboratories Inc., as suitable for the purpose specified and indicated. 2.02 CONTROL VALVES A. Manufacturers: 1. Belimo: www.belimo.com. B. Globe Pattern: 1. Manufacturers: a. Belimo: www.belimo.com. 2. Up to 2 inches (50 mm): Bronze body, bronze trim, rising stem, renewable composition disc, screwed ends with backseating capacity repackable under pressure. 3. Over 2 inches (50 mm): Iron body, bronze trim, rising stem, plug-type disc, flanged ends, renewable seat and disc. 4. Hydronic Systems: a. Rate for service pressure of 125 psig at 250 degrees F (860 kPa at 121 degrees C). b. Size for 3 psig (20 kPa) maximum pressure drop at design flow rate. c. two-way valves shall have equal percentage characteristics, three way valves linear characteristics. Size two-way valve operators to close valves against pump shut off head. C. Butterfly Pattern: 1. Iron body, bronze disc, resilient replaceable seat for service to 180 degrees F (82 degrees C) wafer or lug ends, extended neck. 2. Hydronic Systems: a. Rate for service pressure of 125 psig at 250 degrees F (860 kPa at 121 degrees C). b. Size for 1 psig (7 kPa) maximum pressure drop at design flow rate. D. Electronic Operators: 1. Manufacturers: a. Belimo. 2. Fully modulating capability. 3. Valves shall spring return to normal position as indicated on freeze, fire, or temperature protection. 4. Select operator for full shut off at maximum pump differential pressure.