For nearly one hundred years, the most general valves on ships and barges were gate, globe and check valves. Extra space is always at a reward on a ship. In the case of gate valve, the outside screw and yoke, rising stem design, often took up too much val
Another valve design that found great preference in many critical service applications is the triple-offset butterfly valve. different from non-offset butterfly valves, the triple offset design relies on torque to seal tightly, instead of disc position. M
There are nine kinds of the commonly used materials as follows:
1. Grey cast iron, is suitable for the low pressure valves of working temperature between -15~+200℃, PN≤1.6MPa.
The purpose of the valve maintenance operation is to ensure that the valve is in a perennial clean, good lubrication, and complete and normal operation of the state.
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