Grundfos CRN 15-7 — material number 99917645 — is a 7-stage Grundfos CRN vertical multistage centrifugal pump with a 15 HP, 3-phase, 208-230/460 V NEMA TEFC motor and a HQQE shaft seal.
The 7-stage build delivers 595 ft of head (85 GPM, ~257 psi) at the BEP and a 714 ft shutoff — the typical pick for mid-rise pressure boosting, RO pretreatment, and cooling-tower makeup.
Specifications
| Model | CRN 15-7 |
| Stages | 7 |
| Flow at BEP | 85 GPM |
| Head at BEP | 595 ft (~257 psi) |
| Shutoff head (approx.) | 714 ft |
| Motor | 15 HP, 3-phase, 208-230/460 V, NEMA TEFC on 254TC frame |
| Shaft seal | HQQE (SiC/Carbon EPDM) |
| Materials | All AISI 316L stainless steel wetted parts |
| Material number (P/N) | 99917645 |
| Shipping weight | 370 lbs |
| Frequency | 60 Hz |
| Brand | Grundfos |
| Country of origin | Denmark / USA (varies by date code) |
Dimensions
| Approximate dimensions (vertical pump) | |
|---|---|
| Overall height (pump + motor) | 51.2 in |
| Pump body height (7 stages) | 39.2 in |
| Base height (stage 0) | 17.5 in |
| Added height per stage | 3.1 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 15 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 15 series is available with multiple connection types to match your installation requirements. Connection sizes for this series:
| Connection options | |
|---|---|
| Victaulic / PJE coupling | 2 inch PJE coupling (Victaulic-type) |
| ANSI flange size | 2 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 15-7 ships in several phase, voltage, and seal combinations. Material numbers for the most common variants:
| Phase / Voltage | Seal | Motor HP | Weight | Material Number |
|---|---|---|---|---|
| 3-phase, 208-230/460 | HQQE | 15 HP | 370 lbs | 99917645 |
| 3-phase, 208-230/460 | HQQV | 15 HP | 370 lbs | 99917656 |
| 3-phase, 208-230/460 | HQQE | 15 HP | 278 lbs | 99917623 |
| 3-phase, 208-230/460 | HQQV | 15 HP | 278 lbs | 99917634 |
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 15-7?
- The CRN 15-7 produces approximately 595 ft of head at 85 GPM (best efficiency point), with a shutoff head of about 714 ft. That corresponds to roughly 257 psi at the BEP.
- What is the Grundfos CRN 15-7 material number / part number?
- The primary material number for this configuration (3-phase 208-230/460, HQQE seal) is 99917645. Other voltage and seal options are listed in the variants table on this page.
- Which motor does the Grundfos CRN 15-7 use?
- This SKU ships with a 15 HP, 3-phase, 208-230/460 V NEMA TEFC motor on a 254TC frame. Other motor configurations and IE3/IE5 upgrades are available on request.
- Can the Grundfos CRN 15-7 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 15-7?
- Many configurations of the CRN 15 series ship from stock through Grundfos USA. Contact ForeverPure Place for the current lead time on this specific material number (99917645).
Related Products
- Browse all Grundfos CRN 15 stage configurations
- All CR, CRI, CRN vertical multistage pumps
- Complete Grundfos catalog
