Aurora (a Pentair brand) · Pumps, Circulation and Flow Control · End suction centrifugal pumps (engineered)
Aurora 3800 Series Single Stage End Suction Pumps (Models 3801 and 3804)
Engineered single-stage end suction pumps for commercial pools: 3801 close-coupled or 3804 frame-mounted
Overview
The Aurora 3800 Series is a back-pullout, single-stage end suction centrifugal pump line from Pentair's Aurora brand. Pentair's commercial pool page presents it alongside the 410 Series as engineered pumps for commercial pools, spas and water applications, available in horizontal and vertical configurations with horsepower ratings to 150 and flows to 8,000 GPM across the combined offering. The pool brochure rates the 3800 Series itself at capacities to 4,200 GPM, heads to 520 feet and temperatures to 300 F.
Two models are offered: 3801, a close-coupled pump on a JM/JP motor, and 3804, a flexible-coupled pump mounted with its motor on a formed steel base and driven through a cast iron power frame with regreaseable bearings. Standard construction per the pool brochure is stainless fitted: ASTM A48 cast iron casing and seal plate, 316 stainless steel impeller and shaft sleeve, and a mechanical seal with 303 stainless steel metal parts, Buna-N elastomers, ceramic seat and carbon washer. Four power frame sizes are used, 4-inch discharge and larger pumps have a double volute to reduce bearing loads, and flanged models carry gauge taps on suction and discharge.
Pentair's Aurora brand page states the series was recently redesigned to surpass U.S. Department of Energy efficiency standards and that NSF 372, NSF 50 or NSF 61 certification is available depending on application, listing commercial pools among the intended uses. The pool page notes ODP and TEFC motors in standard and premium efficiency, an epoxy coating option and compatibility with Pentair's AcuDrive XS variable frequency drive. Pentair directs sizing, pricing and availability inquiries to its factory (800-831-7133).
Is this a fit for your facility?
Usually a fit when
- Commercial pools, spas and water applications needing an engineered end suction pump beyond the range of plastic or bronze pool pumps
- Flooded-suction pump rooms (Pentair lists flooded suction application capability)
- Projects specifying stainless-fitted construction, NSF-certified models or premium-efficiency ODP/TEFC motors
- Retrofits where a close-coupled (3801) or frame-mounted (3804) layout must match the existing footprint
Look elsewhere when
- Self-priming installations with the pump above water level: Pentair lists the 3800 Series for flooded suction applications
- Small pools served by Pentair's own self-priming pool pumps with integral hair-and-lint strainers (the 3800 Series has no integral strainer)
Ideal facilities and conditions: Commercial pool and spa recirculation; Water features and other water applications; Building services, pressure boosting and chilled water (per Aurora brand page); Water treatment, industrial process and agriculture (per Aurora brand page).
Problems it addresses
Key capabilities and benefits
Capabilities
- Two models: 3801 close coupled and 3804 flexible coupled, frame mounted
- 316 stainless steel impeller and 316 stainless steel shaft sleeve standard; cast iron ASTM A48 casing
- Double volute on 4-inch discharge and larger to reduce bearing loads; casing feet for easy back pullout
- Four power frame sizes; regreaseable bearings, coupling guard and formed steel base on the 3804
- Optional 316 SST shaft, epoxy coating, flush lines, case wear ring, drip rim base and several mechanical seal options
- NSF 372, NSF 50 or NSF 61 certified models available depending on application (Aurora brand page); ODP and TEFC motors in standard and premium efficiency
Operational and buyer benefits
- Pentair describes the series as highly reliable and offering an economical solution to liquid handling
- Hydraulic efficiency reduces energy consumption and mechanical room footprint (Aurora brand page)
- Compatible with AcuDrive XS variable frequency drives (Pentair commercial pool page)
Available models and configurations
Technical specifications
| Pump type | Single stage end suction, back pullout centrifugalSource: https://www.pentair.com/content/dam/extranet/nam/pentair-pool/commercial/pumps/aurora-3800-series-and-410-series-/aurora-3800-brochure-english.pdf |
|---|---|
| Capacity | to 4,200 GPM (954 m3/hr)Source: https://www.pentair.com/content/dam/extranet/nam/pentair-pool/commercial/pumps/aurora-3800-series-and-410-series-/aurora-3800-brochure-english.pdf |
| Head | to 520 feet (158 m)Source: https://www.pentair.com/content/dam/extranet/nam/pentair-pool/commercial/pumps/aurora-3800-series-and-410-series-/aurora-3800-brochure-english.pdf |
| Temperature | to 300 F (149 C); mechanical seal options required above 225 FSource: https://www.pentair.com/content/dam/extranet/nam/pentair-pool/commercial/pumps/aurora-3800-series-and-410-series-/aurora-3800-brochure-english.pdf |
| Combined Aurora pool offering (3800 + 410) | Horsepower to 150; flows to 8,000 GPM; models rated to 100 ft TDH noted on pool pageSource: https://www.pentair.com/en-us/products/business-industry/commercial-pool-products/commercial-pool-pumps/-aurora--340-series-and-410-series-pumps.html |
| Casing / seal plate | Cast iron ASTM A48Source: https://www.pentair.com/content/dam/extranet/nam/pentair-pool/commercial/pumps/aurora-3800-series-and-410-series-/aurora-3800-brochure-english.pdf |
| Impeller / sleeve | 316 stainless steelSource: https://www.pentair.com/content/dam/extranet/nam/pentair-pool/commercial/pumps/aurora-3800-series-and-410-series-/aurora-3800-brochure-english.pdf |
| Mechanical seal | 303 SST metal parts, Buna-N elastomers, ceramic seat, carbon washerSource: https://www.pentair.com/content/dam/extranet/nam/pentair-pool/commercial/pumps/aurora-3800-series-and-410-series-/aurora-3800-brochure-english.pdf |
| Speeds charted | 3550 and 1770 RPM range charts, enclosed impellerSource: https://www.pentair.com/content/dam/extranet/nam/pentair-pool/commercial/pumps/aurora-3800-series-and-410-series-/aurora-3800-brochure-english.pdf |
| Pump sizes (dimension table, discharge x suction x impeller) | From 1.25x1.5x7 (NPT) and 1.5x2x7 (NPT) through 2x2.5x7, 2x2.5x9.5, 2x3x11, 2x3x13.5 and larger flanged sizes; 250 lb/125 lb flanges on selected sizesSource: https://www.pentair.com/content/dam/extranet/nam/pentair-pool/commercial/pumps/aurora-3800-series-and-410-series-/aurora-3800-brochure-english.pdf |
| Motor frames (3801) | 143JM through 405JM and 364TCZ through 449TCZSource: https://www.pentair.com/content/dam/extranet/nam/pentair-pool/commercial/pumps/aurora-3800-series-and-410-series-/aurora-3800-brochure-english.pdf |
| Certifications | NSF 372, NSF 50 or NSF 61 certified available depending on applicationSource: https://www.pentair.com/en-us/flow/aurora-brand-page/aurora-products/aurora-3800-series-single-stage-end-suction-centrifugal-pumps.html |
| Motors | ODP and TEFC in standard and premium efficiencySource: https://www.pentair.com/en-us/products/business-industry/commercial-pool-products/commercial-pool-pumps/-aurora--340-series-and-410-series-pumps.html |
| VFD compatibility | Compatible with AcuDrive XSSource: https://www.pentair.com/en-us/products/business-industry/commercial-pool-products/commercial-pool-pumps/-aurora--340-series-and-410-series-pumps.html |
Specifications are summarized from manufacturer literature and depend on configuration. Confirm current values with FreyTech before design.
Installation requirements and retrofit considerations
Prerequisites
- Flooded suction (pump is not self-priming; Pentair lists flooded suction application capability)
- Separate hair-and-lint strainer if required by code; none is integral
- Factory sizing: Pentair asks that applications, sizing, pricing and availability go through its factory (800-831-7133)
- Alignment per Hydraulic Institute standards after installation on the 3804 (engineering specification)
Retrofit and replacement notes
- Pentair's dimension table flags certain sizes with 'Dimensions do not match Bell & Gossett', so verify footprint against the existing base before a like-for-like swap
- 3804 frame-mounted design allows motor replacement without removing the pump end; 3801 close-coupled uses JM/JP motors
Integration with other equipment
No equipment integrations are documented for this product. Coordination happens through the design team.
FreyTech's role: design, installation, commissioning, training, support
Project services
- Evaluation of fit for your facility
- Supply, lead time and pricing confirmed on request
- Installation and support coordination where the product calls for it
Ongoing service and support
- Parts, consumables and warranty coordination through FreyTech
Brochures, manuals, warranties and specifications
- BrochureAurora 3800 Series Commercial Pool Pump Brochure (P1-204) (opens manufacturer site)PDF · Manufacturer-hosted
- Product page
- Product page
- BrochureAurora 3800 Series Single Stage End Suction Pumps Brochure (opens manufacturer site)PDF · Manufacturer-hosted
- Installation manualAurora Models 3801 & 3804 End Suction Pump Manual (A-03-327) (opens manufacturer site)PDF · Manufacturer-hosted
- Engineering resourceAurora 3800 Series Dimension Tables (opens manufacturer site)PDF · Manufacturer-hosted
- Engineering resourceAurora 3800 Series Repair Parts Index (A-03-345) (opens manufacturer site)PDF · Manufacturer-hosted
All resources for Aurora 3800 Series Single Stage End Suction Pumps (Models 3801 and 3804) · Request documents
Aurora 3800 Series Single Stage End Suction Pumps (Models 3801 and 3804): frequently asked questions
What is the difference between the Aurora 3801 and 3804?
Per Pentair's brochure, the 3801 is close coupled to a JM/JP motor while the 3804 is flexible coupled and frame mounted on a common steel base with a cast iron power frame and regreaseable bearings.
Are NSF-certified models available?
Pentair's commercial pool page states NSF approved models are available, and the Aurora brand page lists NSF 372, NSF 50 or NSF 61 certification depending on application.
Next step
Is Aurora 3800 Series Single Stage End Suction Pumps (Models 3801 and 3804) right for your facility?
Send us your pool volumes, current equipment, and what is not working. A specialist will review fit honestly and recommend next steps.
Serving commercial aquatic facilities across New York State.