What is the maximum head/flow of the Grundfos CRN 3-11?

The CRN 3-11 produces approximately 605 ft of head at 18 GPM (best efficiency point), with a shutoff head of about 726 ft. That corresponds to roughly 261 psi at the BEP.

What is the Grundfos CRN 3-11 material number / part number?

The primary material number for this configuration (3-phase 208-230/460, HQQE seal) is 99916635. Other voltage and seal options are listed in the variants table on this page.

Which motor does the Grundfos CRN 3-11 use?

This SKU ships with a 2 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 3-11 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 3-11?

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 (99916635).

Grundfos CRN 3-11 2HP 3PH Pump | P/N 99916635

Description

Grundfos CRN 3-11 — material number 99916635 — is a 11-stage Grundfos CRN vertical multistage centrifugal pump with a 2 HP, 3-phase, 208-230/460 V NEMA TEFC motor and a HQQE shaft seal.

With 11 stages this build produces a high 605 ft of head (18 GPM, ~261 psi). It's the standard size for high-pressure RO feed, taller commercial buildings, and applications requiring 200+ psi discharge.

Specifications

Model	CRN 3-11
Stages	11
Flow at BEP	18 GPM
Head at BEP	605 ft (~261 psi)
Shutoff head (approx.)	726 ft
Motor	2 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)	99916635
Shipping weight	95 lbs
Frequency	60 Hz
Brand	Grundfos
Country of origin	Denmark / USA (varies by date code)

Dimensions

Approximate dimensions (vertical pump)
Overall height (pump + motor)	46.3 in
Pump body height (11 stages)	34.3 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 3-11 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	2 HP	105 lbs	`99916551`
3-phase, 208-230/460	HQQE	2 HP	95 lbs	`99916635`
1-phase, 115/208-230	HQQV	2 HP	105 lbs	`99916569`
3-phase, 208-230/460	HQQV	2 HP	95 lbs	`99916653`
1-phase, 115/208-230	HQQE	2 HP	96 lbs	`99916515`
3-phase, 208-230/460	HQQE	2 HP	83 lbs	`99916598`
1-phase, 115/208-230	HQQV	2 HP	96 lbs	`99916533`
3-phase, 208-230/460	HQQV	2 HP	83 lbs	`99916617`

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 3-11?: The CRN 3-11 produces approximately 605 ft of head at 18 GPM (best efficiency point), with a shutoff head of about 726 ft. That corresponds to roughly 261 psi at the BEP.
What is the Grundfos CRN 3-11 material number / part number?: The primary material number for this configuration (3-phase 208-230/460, HQQE seal) is 99916635. Other voltage and seal options are listed in the variants table on this page.
Which motor does the Grundfos CRN 3-11 use?: This SKU ships with a 2 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 3-11 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 3-11?: 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 (99916635).

Related Products

Need quotes, lead-time confirmation, or technical assistance? Contact ForeverPure Place — we'll price the exact configuration (99916635) and check current stock with Grundfos USA.