T-Plus | Comprehensive valve Manufacturer KITZ Corporation

T-Plus Questions

There is a leak from the area of connection between the main pipe and T-Plus.: ① The tightening torque for the pipe mounting bolts of the T-Plus may be insufficient, or the bolts may be tightened unevenly.
When the bolt tightening torque is insufficient or the bolts are tightened unevenly, the T-Plus and the pipe may be misaligned due to the impact caused by the piston movement, resulting in damage of the gasket because it is pulled by the pipe. This may cause external leakage in some cases.

② The fluid may remain in the branch pipe.
Water used during the pressure test may remain in the pipe after the installation of the branch pipe. When the piston moves with that state, such movement may compress the water in the branch pipe, resulting in abnormal rise in pressure inside the branch pipe.
Because of the balance between this raised pressure in the branch pipe and the piston driving pressure causes insufficient lowering of the piston. The abnormally raised pressure from the branch pipe may damage the gasket, which is made of a piping material with a weaker strength, resulting in a condition prone to external leakage in some cases.

③ The pipe may be deformed.
If the bolts for mounting the T-Plus to the pipe are tightened excessively, this may deform the pipe, the sealing performance of the gasket cannot be achieved, leading to external leakage. When tightening the bolts, refer to the tightening torque value shown below before performing the work.

Although the drift pin was struck, it did not cause explosion and therefore the piston did not move.: ① If the drift pin is not held parallel to the cap and hit, it may not cause an explosion, resulting in failure in branching.
② Explosion may not occur if the drift pin is struck without sufficient strength as in the case of double tapping, a test hit, or for other reasons.
③ Do not drop or apply strong shocks to the T-Plus before and after installation because it may cause the piston to shift inside the T-Plus, leaving some space between the piston and the chamber for explosive. The power generated by the piston may become insufficient to branch the main pipe.