Install the valve with proper positioning of the flow arrow. Support and align adjacent piping and the vale. Install lubricated flange bolts. Hands tighten, and then torque the bolts using the crossover flange bolt-tightening method to load the bolts evenly, and eliminate concentrated stresses.
[pdf] In this study, the fracture of piston for rock drill produced from case hardening steel is investigated. In order to study the causes of the fracture, specimens prepared from the damaged pistons were subject.
[pdf] During use, the hydraulic rock drill may experience various failures, such as leakage, stuck drill, and no impact. Upon detecting a fault, promptly cease machine operation for inspection, identifying the cause, and addressing it immediately.
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