What is the maximum head/flow of the Grundfos CRN 3-5?

The CRN 3-5 produces approximately 275 ft of head at 18 GPM (best efficiency point), with a shutoff head of about 330 ft. That corresponds to roughly 119 psi at the BEP.

What is the Grundfos CRN 3-5 material number / part number?

The primary material number for this configuration (3-phase 208-230/460, HQQE seal) is 99916629. Other voltage and seal options are listed in the variants table on this page.

Which motor does the Grundfos CRN 3-5 use?

This SKU ships with a 3/4 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 3-5 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 3-5?

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 (99916629).

Grundfos CRN 3-5 3/4HP 3PH Pump | P/N 99916629

Description

Grundfos CRN 3-5 — material number 99916629 — is a 5-stage Grundfos CRN vertical multistage centrifugal pump with a 3/4 HP, 3-phase, 208-230/460 V NEMA TEFC motor and a HQQE shaft seal.

The 5-stage build delivers 275 ft of head (18 GPM, ~119 psi) at the BEP and a 330 ft shutoff — the typical pick for mid-rise pressure boosting, RO pretreatment, and cooling-tower makeup.

Specifications

Model	CRN 3-5
Stages	5
Flow at BEP	18 GPM
Head at BEP	275 ft (~119 psi)
Shutoff head (approx.)	330 ft
Motor	3/4 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)	99916629
Shipping weight	64 lbs
Frequency	60 Hz
Brand	Grundfos
Country of origin	Denmark / USA (varies by date code)

Dimensions

Approximate dimensions (vertical pump)
Overall height (pump + motor)	35.5 in
Pump body height (5 stages)	23.5 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 3-5 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, 115/208-230	HQQE	3/4 HP	73 lbs	`99916545`
3-phase, 208-230/460	HQQE	3/4 HP	64 lbs	`99916629`
1-phase, 115/208-230	HQQV	3/4 HP	73 lbs	`99916563`
3-phase, 208-230/460	HQQV	3/4 HP	64 lbs	`99916647`
1-phase, 115/208-230	HQQE	3/4 HP	64 lbs	`99916509`
3-phase, 208-230/460	HQQE	3/4 HP	50 lbs	`99916591`
1-phase, 115/208-230	HQQV	3/4 HP	64 lbs	`99916527`
3-phase, 208-230/460	HQQV	3/4 HP	50 lbs	`99916610`

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

Frequently Asked Questions

What is the maximum head/flow of the Grundfos CRN 3-5?: The CRN 3-5 produces approximately 275 ft of head at 18 GPM (best efficiency point), with a shutoff head of about 330 ft. That corresponds to roughly 119 psi at the BEP.
What is the Grundfos CRN 3-5 material number / part number?: The primary material number for this configuration (3-phase 208-230/460, HQQE seal) is 99916629. Other voltage and seal options are listed in the variants table on this page.
Which motor does the Grundfos CRN 3-5 use?: This SKU ships with a 3/4 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 3-5 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 3-5?: 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 (99916629).

Related Products

Need quotes, lead-time confirmation, or technical assistance? Contact ForeverPure Place — we'll price the exact configuration (99916629) and check current stock with Grundfos USA.