Whether using new valve, or the use of repaired valves must be installed before the pressure test leak.
Pressure test, refers to a body strength test. Leak testing, referring t...
For valves, not only will install and maintain, but also to operate.
1.Opening and closing the valve manually
Manual valves are the most widely used valves, its hand wheel o...
Maintenance of the valve, can be divided into two cases; one is kept maintained, the other one is used to maintain.
1.Custody maintenance
Keeping maintenance purposes , is to ...
Valve installation quality, direct impact on use, it must be careful attention.
1.Direction and position
Many valve is directional, such as cut-off valve, throttle valve, pres...
1. If the customer said: "I do not have time ! " So salesman should say: "I understand and I always have enough time , but as long as three minutes , you will believe that this ...
Today's boss , shrewd businessmen abnormalities and customer contact time in order to show their overall strength, to show their wisdom and intelligence strategy to get recogniz...
I know there are a lot of traffic Ali, hundreds of thousands of hundreds of thousands , tens of thousands of nothing , but for me , it is a leap from the beginning of more than ...
Only obtain customer trust, to make him believe you the quality of goods .
If you can not build trust with customers , you can not sell . If the customer trust the sales st...
Stem nut in the process of opening and closing the valve, the valve stem directly bear axial force, it must have a certain strength. Also it is a screw drive with the stem, requ...
The valve stem opening and closing process, to withstand tensile, compressive and torsional forces, and in direct contact with the media, and also to the friction between the fi...