SHURFLO 8005-991-820 Diaphragm Pump – 24 VAC, 45 PSI Bypass

#NSSP008497

Product Description

SHURFLO 8005-991-820 Diaphragm Pump – 24 VAC, 45 PSI Bypass

The SHURFLO 8005-991-820 is an electric, positive-displacement three-chamber diaphragm pump for compatible water delivery and reverse-osmosis booster applications. It operates on 24 VAC and incorporates a 45 PSI internal bypass.

Its construction combines a nylon pump head, EPDM valves and Santoprene diaphragm, with 3/8"-18 female NPT inlet and outlet ports. The model-specific SHURFLO datasheet identifies this version as having no integral pressure switch.

Flow-rate clarification: Your supplied description states 1.45 GPM, while Pentair’s current model table lists 1.1 GPM and an older manufacturer catalogue lists 1.5 GPM open flow. Confirm the supplied unit’s label and performance curve before publishing 1.45 GPM as a verified rating.

Main Features:

24 VAC operation for compatible low-voltage AC installations.

Three-chamber diaphragm design for positive-displacement pumping.

45 PSI internal bypass for pressure-responsive recirculation.

Female NPT ports for matching threaded fittings.

No built-in pressure switch: Requires appropriate external control.

N-E-S construction: Nylon, EPDM and Santoprene materials.

Main Specifications:

Parameter	Details
Brand	SHURFLO / Pentair
Model number	8005-991-820
Series	8000
Pump design	Positive-displacement, three-chamber diaphragm
Nominal voltage	24 VAC
Flow rating	Requires confirmation; current Pentair listing: 1.1 GPM
Internal bypass setting	45 PSI / approximately 3.1 bar
Integral pressure switch	None
Inlet connection	3/8"-18 NPT Female
Outlet connection	3/8"-18 NPT Female
Pump-head plastic	Nylon
Valve material	EPDM
Diaphragm material	Santoprene
Fasteners	Stainless steel
Maximum liquid temperature	82°C / 180°F
Duty rating	Continuous, subject to thermal operating limits
Net weight	Approximately 2.6 kg
Typical application	RO booster pump

Material, temperature, duty and weight specifications are from the model-specific manufacturer datasheet; voltage, connections and the current flow listing are corroborated by Pentair.

Main Applications: