Which pump is better for lawn sprinkling?

Both work. The Goulds GT15 publishes 63 GPM and 122 ft of head, so it covers larger zones. The Pearl THOR matches it on head at 118 ft but does not publish flow.

Which lasts longer in sandy water?

The Goulds GT15. Its diffuser has a stainless wear ring and a glass-filled Noryl impeller, which resist abrasion. The Pearl lists a cast iron casing with no wear ring.

Is the Goulds worth extra money?

Only if the price gap is small. You pay for the back pull-out service design and the wear ring. If your water is clean and you just need irrigation flow, the Pearl does the job.

Can either run continuously?

Yes. Both are rated for continuous duty. The Pearl runs at 3500 rpm; the Goulds is rated within the motor maker's continuous limits.

Do they use the same pipe fittings?

Yes. Both have 1-1/2" NPT suction and discharge, so plumbing swaps over directly. Both also lift water up to 25 ft.

Which handles hotter water?

The Pearl THOR, at 150 °F versus 140 °F for the Goulds. Neither is meant for hot-water recirculation loops above those limits.

Pearl THOR 15F16S Centrifugal Sprinkler Pump (1.5 HP, Single Phase, 115/230V) vs Goulds GT15 IRRI-GATOR Centrifugal Pump

Both are 1.5 HP self-priming cast-iron centrifugal pumps with 1-1/2" NPT ports and about the same head (118 ft vs 122 ft). The Goulds GT15 has the edge on documented flow (63 GPM max), a back pull-out design for service without cutting piping, and a stainless wear ring for abrasive water. The Pearl THOR is the simpler, often cheaper choice for straight irrigation and booster duty. Compare current prices at every store on Deal.ai before you pick, since neither price was given here.

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