进口持压泄压阀由主阀、泄压/持压导阀针阀、 、球阀、微形过滤器和压力表组成水力控制接管系统。
A pressure relief valve from the main valve, pressure relief / holding pressure pilot valve needle valve, ball valve, micro shaped filter and pressure gauge hydraulic control over the system.
联接管与阀口“O”形密封圈套入处应保持清洁， （见图20） 联接管有剖面线的部位处不能涂油漆。
The tube connector and "O" shape seal ring of the valve must be kept clean, and the cross section line of the tube connector cannot be painted.
压力容器设备中法兰与筒体、法兰与接管连接处的C类焊缝和封头端部、筒体上马鞍形的D类焊缝是最为不规则的且施焊工艺最为复杂的焊缝。
In pressure vessels, C and D seam which are located at the joint of flange, tube-shape object, jointed tube, and head of pressure vessels separately are the most complex seams.
本实用新型公开了一种S形的连接管，涉及建材产品技术领域。该连接管为S形的管子的形状。
The utility model discloses an S-shaped connection tube, relating to construction material production technical field.
梭形双通道桥接管；
梭形双通道桥接管；
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