switch lock key and to prevent the valve from the theory of water meter protection box

摘要

The invention also relates to a meter bohotong, in the prior art, the tap water inlet opening because the valve is also installed in the service water inlet side in the center of the meter standing user and so optionally be opened and closed standing failure frequent replacement repairs state is getting a lot , locking the mass when using tap water on-off valve may then used to connect the pipe to the meter in the withdrawn conditions as were a number of problems such as a large amount of dioptric power, such as occurrence of mounting the meter may again.; The invention sikidoe mounting a to be the meter (4) centered in the tap water inlet side of the water pipe (open ball valve 7 for the 50 lower end side of the invention wishes to solve the problems as described above, the ball valve 7 opening and closing rod (8) causes the elongated and may meter bohotong leg 11 elongated on the side projecting into that gwanbong 10 is integrally formed, and then the long opening and closing rod (8) open so as to form the opening the locking portion (9) at the top locking portion (9) and to the shape of the key (13) only opening and flow control to be inserted, a conventional on-off valve (20) digits, and mounting the elbow 12 may meter (4) outlet side by ball mounting the valve 6 and the check valve 14 on, it is possible to treat only certain personnel whether tap water flows, as the difference between the pressure at home, the factory may of impurities was within pipes not flow back toward the meter (4) It may be opened and closed by the lock-key section and a non-return valve so that the meter laying A bohotong.