Grundfos 99163934 Alpha 2 In-Line Circulator Pump, 1-1/2" Inlet x 1-1/2" Outlet, 115 VAC, 1 ph
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Gallon per minute range 0-21
Headfeet range 0-18
Material Cast Iron
Maximum gallon per minute 21.0000
Maximum headfeet 18.0000
Number of speeds Variable
Water type Heating Water
Brand Grundfos
Origin country United States - US
Package Weight 3.12
Product Weight 3.124
Manufacturer part number 99163934
MASTER part number ALPHA21555FRLC
Characteristics Maximum gallon per minute: 21: Maximum headfeet: 18

-Amperage Rating: 0.1 to 0.65 A

- Bearing Type: Radial

- Dimensions: 7 in L x 3.44 in W x 6.5 in H

- Enclosure Type: IP42

- Frequency Rating: 60 Hz

- Impeller Type: Composite

- Inlet Size: 1-1/2 in

- Material: Cast Iron

- Maximum Head: 18.05 ft

- Maximum Pressure: 145 psi

- Outlet Size: 1-1/2 in

- Phase: 1 ph

- Power Rating: 0.0067 to 0.06 hp

- Series: Alpha 2

- Temperature Rating: 32 to 104 deg F Ambient

- Type: In-Line

- Voltage Rating: 115 VAC

Supply Voltage 115VAC
Product Family Circulators and Pumps
Number of Speeds: Variable



The new ALPHA2 takes reliability in small domestic circulators to new heights. Even in systems where the operational environment is a challenge, the ALPHA2 will ensure long-lasting trouble-free operation with no risk of blockage. If you want to leave your customers with a completely trouble-free heating solution, the new ALPHA2 is a premium choice. ALPHA2 is versatile and efficient whether you use one of its seven speed, pressure control settings or simply leave it on the factory setting AUTOADAPTâ„¢. The ECM motor design reduces energy consumption by 50% and in AUTOADAPT mode, will automatically analyze the heating system, find the optimum setting, continue to adjust its operation to changes in demand and reduce power consumption by up to 85%. This to ensure the lowest possible energy consumption without sacrificing comfort.
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