HD Series multi-stage horizontal diffuser pump is designed for high-pressure applications where a metallic pump is unacceptable. Series HD pump create flow with pressures comparable to pumps with impellers 2 or 3 times their diameter size with less disk friction loss. Instead of using a relatively large diameter impeller, the same pressure can be obtained utilizing two or more smaller impellers in series. Thus, smaller pump cases are needed and require less installation space. The diffuser vanes guide the fluid from one impeller to the next creates a perfectly radial hydraulic balance, increases efficiency and guarantees a quiet smooth operation. Diffuser pumps are constructed of CPVC and a 316SS or optional titanium shaft allowing for temperatures to 200 F. HD Series pumps are available in 2-stage or 3-stage. All pumps have 2" FNPT suction x 1 1/2" MNPT top discharge.  Single mechanical seal is carbon/ceramic. Three phase TEFC motors are standard.

Options:  316SS or titanium shaft -- Viton® or EP elastomer seal

The ideal flow rate for these pumps is 7 to 75 Gallons Per Minute. Pressures are listed below at different GPM

Pressure in feet of head vs. Flow in GPM

Viton® is a registered trademark of DuPont Dow Elastomers.

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