Grundfos CRN 3-2 — material number 99916626 — is a 2-stage Grundfos CRN vertical multistage centrifugal pump with a 1/3 HP, 3-phase, 208-230/460 V NEMA TEFC motor and a HQQE shaft seal.
This 2-stage configuration produces a moderate 110 ft of head at the BEP (18 GPM, ~47 psi) and is the most common choice for low-rise commercial boosting and short pipe runs where modest pressure is needed.
Specifications
| Model | CRN 3-2 |
| Stages | 2 |
| Flow at BEP | 18 GPM |
| Head at BEP | 110 ft (~47 psi) |
| Shutoff head (approx.) | 132 ft |
| Motor | 1/3 HP, 3-phase, 208-230/460 V, NEMA TEFC on 56C frame |
| Shaft seal | HQQE (SiC/Carbon EPDM) |
| Materials | All AISI 316L stainless steel wetted parts |
| Material number (P/N) | 99916626 |
| Shipping weight | 57 lbs |
| Frequency | 60 Hz |
| Brand | Grundfos |
| Country of origin | Denmark / USA (varies by date code) |
Dimensions
| Approximate dimensions (vertical pump) | |
|---|---|
| Overall height (pump + motor) | 30.1 in |
| Pump body height (2 stages) | 18.1 in |
| Base height (stage 0) | 14.5 in |
| Added height per stage | 1.8 in |
| Motor frame | See spec table above |
| Mounting | Vertical foot-mounted |
| Motor orientation | Vertical with NEMA motor stool above pump head |
Note: Dimensions are approximate and based on the Grundfos CRN 3 data booklet. Exact dimensions vary slightly by motor frame and base style. For certified installation drawings of this specific material number, request a quote and we'll provide the official Grundfos dimensional drawing.
Pipe Connections
The Grundfos CRN 3 series is available with multiple connection types to match your installation requirements. Connection sizes for this series:
| Connection options | |
|---|---|
| Victaulic / PJE coupling | 1-1/4 inch PJE coupling (Victaulic-type) |
| ANSI flange size | 1-1/4 inch |
| ANSI flange class | 300 lb |
| Inlet / outlet orientation | Suction and discharge on the same horizontal centerline (in-line) |
Companion connections (gaskets, bolts, ANSI flanges or Victaulic couplings) are ordered separately. Contact ForeverPure for the matched connection kit part numbers for your specific configuration.
Available Configurations / Material Numbers
The CRN 3-2 ships in several phase, voltage, and seal combinations. Material numbers for the most common variants:
| Phase / Voltage | Seal | Motor HP | Weight | Material Number |
|---|---|---|---|---|
| 1-phase, 115/230 | HQQE | 1/3 HP | 63 lbs | 99916542 |
| 3-phase, 208-230/460 | HQQE | 1/3 HP | 57 lbs | 99916626 |
| 1-phase, 115/230 | HQQV | 1/3 HP | 63 lbs | 99916560 |
| 3-phase, 208-230/460 | HQQV | 1/3 HP | 57 lbs | 99916644 |
| 1-phase, 115/230 | HQQE | 1/3 HP | 49 lbs | 99916506 |
| 3-phase, 208-230/460 | HQQE | 1/3 HP | 47 lbs | 99916588 |
| 1-phase, 115/230 | HQQV | 1/3 HP | 49 lbs | 99916524 |
| 3-phase, 208-230/460 | HQQV | 1/3 HP | 47 lbs | 99916607 |
Typical Applications
- Seawater reverse osmosis (SWRO) high-pressure feed
- Brackish water RO and booster
- Ultrapure water (UPW) for semiconductor fabs
- Pharmaceutical purified water (USP) loops
- Chloride-bearing chemical transfer
- Food-grade hot CIP
Datasheet & Documentation
- Grundfos CR/CRI/CRN North America Data Booklet (PDF)
- CR/CRI/CRN/CRT Installation & Operating Instructions (PDF)
- CR Service Manual (PDF)
Frequently Asked Questions
- What is the maximum head/flow of the Grundfos CRN 3-2?
- The CRN 3-2 produces approximately 110 ft of head at 18 GPM (best efficiency point), with a shutoff head of about 132 ft. That corresponds to roughly 47 psi at the BEP.
- What is the Grundfos CRN 3-2 material number / part number?
- The primary material number for this configuration (3-phase 208-230/460, HQQE seal) is 99916626. Other voltage and seal options are listed in the variants table on this page.
- Which motor does the Grundfos CRN 3-2 use?
- This SKU ships with a 1/3 HP, 3-phase, 208-230/460 V NEMA TEFC motor on a 56C frame. Other motor configurations and IE3/IE5 upgrades are available on request.
- Can the Grundfos CRN 3-2 be paired with a variable frequency drive (VFD)?
- Yes. Order the matching E-Pump variant with integrated MLE permanent-magnet motor, or pair this fixed-speed pump with a Grundfos CUE external VFD.
- What is the typical lead time for the Grundfos CRN 3-2?
- Many configurations of the CRN 3 series ship from stock through Grundfos USA. Contact ForeverPure Place for the current lead time on this specific material number (99916626).
Related Products
- Browse all Grundfos CRN 3 stage configurations
- All CR, CRI, CRN vertical multistage pumps
- Complete Grundfos catalog
