What is the maximum head/flow of the Grundfos CR 20-4?

The CR 20-4 produces approximately 380 ft of head at 115 GPM (best efficiency point), with a shutoff head of about 456 ft. That corresponds to roughly 164 psi at the BEP.

What is the Grundfos CR 20-4 material number / part number?

The primary material number for this configuration (3-phase 208-230/460, HQQE seal) is 99917737. Other voltage and seal options are listed in the variants table on this page.

Which motor does the Grundfos CR 20-4 use?

This SKU ships with a 10 HP, 3-phase, 208-230/460 V NEMA TEFC motor on a 213TC frame. Other motor configurations and IE3/IE5 upgrades are available on request.

Can the Grundfos CR 20-4 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 20-4?

Many configurations of the CR 20 series ship from stock through Grundfos USA. Contact ForeverPure Place for the current lead time on this specific material number (99917737).

Grundfos CR 20-4 10HP 3PH Pump | P/N 99917737

Description

Grundfos CR 20-4 — material number 99917737 — is a 4-stage Grundfos CR vertical multistage centrifugal pump with a 10 HP, 3-phase, 208-230/460 V NEMA TEFC motor and a HQQE shaft seal.

The 4-stage build delivers 380 ft of head (115 GPM, ~164 psi) at the BEP and a 456 ft shutoff — the typical pick for mid-rise pressure boosting, RO pretreatment, and cooling-tower makeup.

Specifications

Model	CR 20-4
Stages	4
Flow at BEP	115 GPM
Head at BEP	380 ft (~164 psi)
Shutoff head (approx.)	456 ft
Motor	10 HP, 3-phase, 208-230/460 V, NEMA TEFC on 213TC frame
Shaft seal	HQQE (SiC/Carbon EPDM)
Materials	Cast iron head/base; 304 SS chambers and impellers
Material number (P/N)	99917737
Shipping weight	229 lbs
Frequency	60 Hz
Brand	Grundfos
Country of origin	Denmark / USA (varies by date code)

Dimensions

Approximate dimensions (vertical pump)
Overall height (pump + motor)	42.7 in
Pump body height (4 stages)	30.7 in
Base height (stage 0)	17.5 in
Added height per stage	3.3 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 20 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 20 series is available with multiple connection types to match your installation requirements. Connection sizes for this series:

Connection options
Standard pipe connection (oval flange)	2 inch NPT
ANSI flange size	2 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 20-4 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, 230	HQQE	10 HP	353 lbs	`99917691`
3-phase, 208-230/460	HQQE	10 HP	229 lbs	`99917737`
1-phase, 230	HQQV	10 HP	353 lbs	`99917725`
3-phase, 208-230/460	HQQV	10 HP	229 lbs	`99917742`
1-phase, 230	HQQE	10 HP	355 lbs	`99917729`
3-phase, 208-230/460	HQQE	10 HP	231 lbs	`99917747`
1-phase, 230	HQQV	10 HP	355 lbs	`99917733`
3-phase, 208-230/460	HQQV	10 HP	231 lbs	`99917757`

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 20-4?: The CR 20-4 produces approximately 380 ft of head at 115 GPM (best efficiency point), with a shutoff head of about 456 ft. That corresponds to roughly 164 psi at the BEP.
What is the Grundfos CR 20-4 material number / part number?: The primary material number for this configuration (3-phase 208-230/460, HQQE seal) is 99917737. Other voltage and seal options are listed in the variants table on this page.
Which motor does the Grundfos CR 20-4 use?: This SKU ships with a 10 HP, 3-phase, 208-230/460 V NEMA TEFC motor on a 213TC frame. Other motor configurations and IE3/IE5 upgrades are available on request.
Can the Grundfos CR 20-4 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 20-4?: Many configurations of the CR 20 series ship from stock through Grundfos USA. Contact ForeverPure Place for the current lead time on this specific material number (99917737).

Related Products

Need quotes, lead-time confirmation, or technical assistance? Contact ForeverPure Place — we'll price the exact configuration (99917737) and check current stock with Grundfos USA.