Microsoft Word Course Control valves R. doc

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Control Valves Basics - Sizing & Selection
FMD3x00 98 DB Initialize (5), configuration-and-evaluation-software-pi-9045582-en-gb, configuration-and-evaluation-software-pi-9045582-en-gb, Document, colour present

2. What is a pressure reducing valve
3. What is a pressure relief valve

COMMON QUESTIONS
1. What are the common control valve applications
Control valves are used in following applications
• Pressure Reducing
• Pressure
Relief/Sustaining
• Pump Control
• Rate-of-Flow Control
• Level Control
• Cavitation Control
• Surge Anticipation
• Electronic Control
• Metering
2. What is a pressure reducing valve
Pressure reducing valve reduces a higher inlet pressure to a constant downstream pressure regardless of demand and supply pressure fluctuations. It enables delivery

of water at safe pressures and adequate levels in various applications such as main feed, fire and irrigation systems.
3. What is a pressure relief valve
Pressure relief valve relieves excess pressure while maintaining a minimum upstream pressure. It prevents downstream demand from sacrificing supply of an upstream zone. It is typically installed in protection of inline distribution piping at booster pump stations.

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