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How to Determine the Correct Suction Lift for Fire Pumps?
Key Factors to Consider:
NPSHa vs. NPSHr: The Net Positive Suction Head Available (NPSHa) must always exceed the Net Positive Suction Head Required (NPSHr) to prevent cavitation.
Elevation & Water Source: Pumps drawing from underground tanks or reservoirs need to account for elevation changes and friction losses.
Pipe Sizing & Layout: Use properly sized pipes and minimize bends to reduce suction losses.
Compliance with NFPA 20: Follow recommended practices for suction piping to ensure smooth operation.
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Key Factors to Consider:
- NPSHa vs. NPSHr: The Net Positive Suction Head Available (NPSHa) must always exceed the Net Positive Suction Head Required (NPSHr) to prevent cavitation.
- Elevation & Water Source: Pumps drawing from underground tanks or reservoirs need to account for elevation changes and friction losses.
- Pipe Sizing & Layout: Use properly sized pipes and minimize bends to reduce suction losses.
- Compliance with NFPA 20: Follow recommended practices for suction piping to ensure smooth operation.
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