What is the maximum head/flow of the Grundfos CR 3-4?

The CR 3-4 produces approximately 220 ft of head at 18 GPM (best efficiency point), with a shutoff head of about 264 ft. That corresponds to roughly 95 psi at the BEP.

What is the Grundfos CR 3-4 material number / part number?

The primary material number for this configuration (3-phase 208-230/460, HQQE seal) is 99916313. Other voltage and seal options are listed in the variants table on this page.

Which motor does the Grundfos CR 3-4 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 CR 3-4 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 CR 3-4?

Many configurations of the CR 3 series ship from stock through Grundfos USA. Contact ForeverPure Place for the current lead time on this specific material number (99916313).

Grundfos CR 3-4 3/4HP 3PH Pump | P/N 99916313

Description

Grundfos CR 3-4 — material number 99916313 — is a 4-stage Grundfos CR vertical multistage centrifugal pump with a 3/4 HP, 3-phase, 208-230/460 V NEMA TEFC motor and a HQQE shaft seal.

The 4-stage build delivers 220 ft of head (18 GPM, ~95 psi) at the BEP and a 264 ft shutoff — the typical pick for mid-rise pressure boosting, RO pretreatment, and cooling-tower makeup.

Specifications

Model	CR 3-4
Stages	4
Flow at BEP	18 GPM
Head at BEP	220 ft (~95 psi)
Shutoff head (approx.)	264 ft
Motor	3/4 HP, 3-phase, 208-230/460 V, NEMA TEFC on 56C frame
Shaft seal	HQQE (SiC/Carbon EPDM)
Materials	Cast iron head/base; 304 SS chambers and impellers
Material number (P/N)	99916313
Shipping weight	54 lbs
Frequency	60 Hz
Brand	Grundfos
Country of origin	Denmark / USA (varies by date code)

Dimensions

Approximate dimensions (vertical pump)
Overall height (pump + motor)	33.7 in
Pump body height (4 stages)	21.7 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 CR 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 CR 3 series is available with multiple connection types to match your installation requirements. Connection sizes for this series:

Connection options
Standard pipe connection (oval flange)	1 inch NPT
ANSI flange size	1-1/4 inch
ANSI flange class	250 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 CR 3-4 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	68 lbs	`99916248`
3-phase, 208-230/460	HQQE	3/4 HP	54 lbs	`99916313`
1-phase, 115/208-230	HQQV	3/4 HP	68 lbs	`99916262`
3-phase, 208-230/460	HQQV	3/4 HP	54 lbs	`99916327`
1-phase, 115/208-230	HQQE	3/4 HP	78 lbs	`99916276`
3-phase, 208-230/460	HQQE	3/4 HP	64 lbs	`99916341`
1-phase, 115/208-230	HQQV	3/4 HP	78 lbs	`99916295`
3-phase, 208-230/460	HQQV	3/4 HP	64 lbs	`99916359`

Typical Applications

Boiler feed water in industrial steam plants
Cooling tower makeup water
High-rise commercial pressure boosting
HVAC chilled water circulation
Fire protection jockey pump
Light industrial process water

Datasheet & Documentation

Frequently Asked Questions

What is the maximum head/flow of the Grundfos CR 3-4?: The CR 3-4 produces approximately 220 ft of head at 18 GPM (best efficiency point), with a shutoff head of about 264 ft. That corresponds to roughly 95 psi at the BEP.
What is the Grundfos CR 3-4 material number / part number?: The primary material number for this configuration (3-phase 208-230/460, HQQE seal) is 99916313. Other voltage and seal options are listed in the variants table on this page.
Which motor does the Grundfos CR 3-4 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 CR 3-4 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 CR 3-4?: Many configurations of the CR 3 series ship from stock through Grundfos USA. Contact ForeverPure Place for the current lead time on this specific material number (99916313).

Related Products

Need quotes, lead-time confirmation, or technical assistance? Contact ForeverPure Place — we'll price the exact configuration (99916313) and check current stock with Grundfos USA.