NH81 multistage centrifugal booster pump

Our H Series multi-stage high pressure booster pumps come in a variety of stagings. The Stainless Steel pump line is available in 304ss, 316ss and 316ss electro polished wetted parts. We boast a modular design that encompasses the main assemblies of the pump end allowing field repair when necessary. We also offer bearings in different configurations to accommodate various thrust loads, and a mechanical seal selection which allows incoming pressure to range from 10psi to 800psi. We test every booster pump throughout the specific hydraulic range of its series along with vibration analysis to assure a long and trouble-free life. The NH81 generates pressures up to 550 psig and flows from 160 to 600 gpm.

All stainless steel construction

Features and Benefits


Performance curves

H81_250 60Hz Performance Curve

H81_250 50Hz Performance Curve

H81_300 60Hz Performance Curve

H81_385 60Hz Performance Curve

H81_385 50Hz Performance Curve

H81_475 60Hz Performance Curve

H81_475 50Hz Performance Curve

Catalog Dimensions

Note: These Drawings are for Reference Only. Contact Factory for Certified Dimensional Drawings.

NH81CDE 250-300 Catalog Dimensions

NH81CDE 385-475 Catalog Dimensions

NH81K250F16E60A to AS21019E Comparison

NH81K385X9E75A to AS40409KTE Comparison

NH81K385X12E100A to AS40612KTF Comparison

Exploded View and Part Lists

NH81D250 Exploded View

NH81D250 Parts List

NH81E250 Exploded View

NH81E250 Parts List

NH81D300 Exploded View

NH81D300 Parts List

H81E300 Exploded View

NH81E300 Parts List

NH81D385 Exploded View

NH81D385 Parts List

NH81E385 Exploded View

NH81E385 Parts List

NH81D475 Exploded View

NH81D475 Parts List

NH81E475 Exploded View

NH81E475 Parts List

NH81G385 Exploded View

NH81G385 Parts List


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You can contact us by phone at 304-366-1300 or by emailing our sales department.

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