NAFCO | Brass Gate Valve Installation From: NAFCO | China Brass Valves Manufacturer 1. The installation of the gate valve must be carried out by qualified operators. The deviation of the different axial directions of the two ends of the pipeline must not be too large, otherwise excessive pipeline installation stress will be generated, resulting in failure and damage. The thread precision and effective length strictly enforce the ISO228-1 relevant standards. When installing the screw, the hex or octagonal part of the same side of the thread should be clamped. The hexagonal or octagonal part of the other end of the valve should not be wrenched to avoid deformation of the valve. It must be made of Teflon tape or thread sealant seal. 2. To install the tightening valve, you must use the corresponding torque wrench or pipe wrench, and screw in the effective thread length. Do not excessively cause the inner end surface to be pressed, causing the s...
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