A system for implementing the above process, including a suitable valvearrangement, is also provided.
本发明还提供实施上述方法的系统,其包括合适的阀装置。
2
The pressure range of gas transmission and distribution network, network type, valvearrangement, pipe diameter arrangement, etc.
燃气输配管网的压力级制、管网型式、阀门配置和管径配置等是管网结构因素。
3
This device comprises a cleaning head (1) being fitted with an alternately suctioning valvearrangement and provided with an elastic sliding base (2) being freely rotatable in its plane.