In cold climates:
1) Use freeze-resistant materials or heat tracing,
2) Drain pump when not in use to prevent freezing damage,
3) Ensure priming fluid doesn't freeze,
4) Consider lower-temperature viscosity effects,
5) Install insulation on pump and piping.

Bubbles reduce effective fluid density, lowering pump efficiency and output. Excessive air can cause vapor lock, loss of prime, or dry running damage. Some air entrainment is tolerable, but prolonged operation with high bubble content accelerates seal wear.

Chemical pump compatibility depends on wetted materials: PVDF handles most strong acids, oxidizers, and solvents; PP resists acids, bases, and salts; stainless steel fits high-temperature and certain solvents; specialty alloys handle extreme or mixed chemistries. Always verify with chemical compatibility charts.

Vertical pumps require minimal horizontal footprint but need sufficient vertical clearance above the pump for motor service and impeller removal. Installation space depends on pump length (immersion depth). Ensure access for maintenance overhead and room around discharge piping.

Magnetic pumps use magnetic drive coupling with no mechanical seal, achieving zero leakage. This makes them superior for handling toxic, flammable, expensive, or environmentally hazardous fluids where even minor leakage is unacceptable. No seal maintenance or replacement is needed.

Self-priming pumps are ideal for: chemical transfer between tanks, wastewater sump pumping, underground tank emptying, plating solution circulation, portable pump stations, and applications where the pump is located above the liquid level.