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What is the difference between double-seated and single-seated ball valve?
Wiki User
∙ 14y ago
Double seated ball valves will hold pressure from either end whereas single seated will only hold pressure rating from one end.
Wiki User
∙ 14y ago
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What is Difference between relief valve and safety valve?
Relief valve always position in the suction line in oreder to relief the extra pressure, while safety valve is always placed at discharge line to release excess pressure.I would take that one step further by stating that a " RELIEF VALVE" is one that is "meant" to be lifted off its seat, as opposed to a "SAFETY RELIEF VALVE" which is not!DIFFERENCE BETWEEN RELIEF VALVE AND SAFETY VALVE:1. Releif valve is applicable in the fluid system.safety valve is applicable in the gaseous system.2.Relief valve opening is directly proportional to the pressure rise.Safety valve opening is will happen at after reaching the setpressure.3.Mode of relif vlave line is again connected to the suction.But in the safety valve is just vent-out there is no connection tosuction.
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The set pressure is the pressure at which a relief valve starts to open. When the valve is open and relieving, the pressure will be higher or lower than the set pressure, depending on the system and the valve design. That is the blow-off pressure.
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The term cock and valve are used interchangeably in the English language. The term cock has in large been replaced with valve with no functional difference between the two.
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a gate valve is a one way totally open or closed valve, a control valve is a variable valve.
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OS and Y stands for Opposed Stem and Yoke.
