[Answer] Before choosing a door closer, you should consider: your door weight, door width, use requirements and use environment.
Door weight and door width are the premise of choosing the model of the door closer. Generally, the door weight is small and the model with small strength is selected. This makes it easy to open the door, and it is also beautifully installed on the door. Secondly, the small product is generally economical. vice versa.
Regardless of the high frequency of opening the door, the door closer must meet:
A. It is required that the door closer is better in seaming and does not leak oil. The key is the technique and material of the seam.
B. It is required that the life of the door closer is long. In this way, it can accommodate or guarantee long-term and normal use after installation, reduce the workload and cost of maintenance and renewal, and also feel the convenience and enjoyment brought by the product of the door closer.
The above contents are compiled according to the problems encountered by the students in the actual work, for reference, if there is any problem, please communicate and correct in time.
2Pc Flanged Ball Valves,2Pc Flanged Ball Valve ,2 Flanged Ball Valves,Flange End Ball Valve
WENZHOU DIYE VALVE&FITTINGS CO.,LTD , https://www.diye-valve.com