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QBY Diaphragm Pump – Comparing Aluminum, Stainless Steel, Cast Iron, and Polypropylene — QBY Air-Operated Diaphragm Pump (AODD)
QBY Air-Operated Diaphragm Pump (AODD)

QBY Diaphragm Pump – Comparing Aluminum, Stainless Steel, Cast Iron, and Polypropylene

Choosing the Right Body MaterialThe QBY comes in four standard materials. Each has strengths for different applications. Here’s a quick comparison. Material Comparison Table Material Weight Corrosion…

Specifications
Flow Rate0-30m³/h
Head0 – 50 / 70m
Inlet / Outlet Diameter10 – 100mm
MaterialPP Engineering Plastic, Aluminum Alloy, Cast Iron, Stainless Steel
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Product Overview

Choosing the Right Body Material
The QBY comes in four standard materials. Each has strengths for different applications. Here’s a quick comparison.

Material Comparison Table

MaterialWeightCorrosion ResistanceAbrasion ResistanceCost
AluminumLightModerateModerateLow
Stainless SteelMediumExcellentGoodHigh
Cast IronHeavyLowExcellentMedium
PolypropyleneLightExcellentPoorLow

When to Choose Each
•
Aluminum​ – general industrial, oils, fuels
•
Stainless Steel​ – chemicals, food, pharmaceuticals
•
Cast Iron​ – mining, slurry, abrasive fluids
•
Polypropylene​ – acids, alkalis, water treatment


Diaphragm Material Matters Too
Match the diaphragm to the fluid. PTFE for chemicals, NBR for oils, FKM for high temperatures.


Applications Summary:​
material selection, chemical compatibility, pump specification, industrial fluid handling, corrosion resistance, abrasion resistance


Thanks for reading from HAQUANPUMP. We offer QBY diaphragm pumps in all four materials. Contact us for help choosing the right one

Typical Applications

  • material selection
  • chemical compatibility
  • pump specification
  • industrial fluid handling
  • corrosion resistance
  • abrasion resistance

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