Хавхлагын даралтын туршилт нь удаан хугацааны ...
One, the daily maintenance of the valve. 1. Attention should be paid to the storage environment of the valve. It should be stored in a dry and ventilated room and blocked at both ends of the channel. 2. The valve should be checked regularly, and the dirt on it should be smeared with anti-rust oil on its surface. 3.