Series LQ1/LQ3/LVN/LQHB Fluoropolymer Fittings/Needle Valve/ Bore Through Connector/ Precautions 1 Be sure to read before handling. Refer to front matter 41 for Safety Instructions. Nut tightening torque for piping Body class 1 2 3 4 5 6 7 Torque (N.m) Taper thread mounting torque Bore size 1/8 1/4 3/8 1/2 3/4 1 1 1/4 Torque (N.m) 0.6 to 0.9 0.8 to 1.2 1.0 to 1.6 1.5 to 2.0 2.0 to 2.7 2.5 to 3.6 5.5 to 7.5 4. Nut tightening torque for the panel mount union. . 0.3 to 0.4 0.8 to 1.0 1.0 to 1.2 2.5 to 3.0 5.5 to 6.0 . Note 1) LQ1 . 1.5 to 2.0 3.0 to 3.5 7.5 to 9.0 . . . LVN 0.7 to 0.9 1.6 to 1.8 3.2 to 3.5 5.0 to 5.3 10.0 to 10.5 22.5 to 23.0 23.0 to 26.5 LQ3 Nut tightening torque for the panel mount union Body class 1 2 3 4 5 6 Torque (N.m) 0.5 to 0.6 0.6 to 0.7 1.2 to 1.3 4.5 to 4.6 6.8 to 6.9 12.4 to 12.5 1. Confirm the specifications. Give careful consideration to operating conditions such as the application, fluid and environment, and use within the operating ranges specified in this catalog. 2. Fluid Operate within the indicated fluid temperature range. 3. Maintenance space Ensure the necessary space for maintenance and inspections. 4. Fluid pressure range Keep the supplied fluid pressure within the operating pressure range shown in the catalog. 5. Countermeasures for static electricity Since static electricity may be generated depending on the fluid being used, implement suitable countermeasures. Design and Selection Warning 1. After mounting, perform suitable function and leak tests to confirm that the mounting is correct. 2. Instruction manual Mount and operate the product after reading the manual carefully and understanding its contents. Also keep the manual where it can be referred to as necessary. Mounting Warning Piping Caution 1. Connect tubing with special tools. Refer to the pamphlet “High-Purity Fluoropolymer Fittings Hyper fitting/Series LQ1, 2 Work Procedure Instructions” (M-E05-1) for connecting tubing and special tools. (Downloadable from our web site.) Piping Caution 2. Tighten the nut until it touches the end surface of the body, and then tighten it an additional 1/8 turn. If the nut won’t turn any further, then it means a sufficient tightening has occurred. Refer to the proper tightening torques shown below. 3. Use sealant tape for the piping of taper thread parts such as LQ�ｭH and LQ�ｭL. Tape the ridges tightly with the sealant tape, starting one ridge width left from thread end side. 3 to 4 sealant tapes are required. Note 1) The LQ1 Body class 1 must be tightened manually. Note 2) Refer to page 819 for Series LQHB. A 822