Pumps Selection Guide

FEATURE OR REQUIREMENT Micro Diaphragm Single Head Micro Diaphragm Dual Head Mini Diaphragm Single Head Mini Diaphragm Dual Head CEP-1 Industrial IR-1050 Centurion Explosion Proof
Brush and brushless DC motor-driven x x x x x
Brushless AC motor-driven x x
Dimensions 1.5″ x .82″ x 1.98″ 1.5″ x .82″ x 1.98″ 1.1875″ x 3.5″ x 2.5″ 1.19″ x 3.5″ x 3.1″ 2.4″ x 5.4″ x 4.9″ 7.4 W” x 13.4 L” x 8.1 T”
Weight 1.8 oz. 2.2 oz. 7.2 oz. 7.8 oz. 3 lbs. 9 oz. 12 lbs.
Ports 0.1″ 0.1″ I.D.: 0.125″

O.D.: 0.1875″
I.D.: 0.125″

O.D.: 0.1875″
1/8″ NPT 1/8″ or 1/4″ NPT
Balanced to cut down on vibration, reduce noise, and extend life of pump x x x x x x
One head can be used for low flow and one for high flow x
Each head can be configured for vacuum operation, pressure operation, or alternating between the two x x x x
Handles gases or liquids (both for dual-head) x x x x
Explosion-proof motor x
UL and CSA listed Class I x
Division 1, Group C and D and Class II, Group F and G certified x x x x x x
Wetted parts materials Stainless steel 10% glass reinforcement

PUMP BODY: Nylon

DIAPHRAGM: Viton
Stainless steel 10% glass reinforcement

PUMP BODY: Nylon

DIAPHRAGM: Viton
Stainless steel 10% glass reinforcement

PUMP BODY: Nylon

DIAPHRAGM: Viton
Stainless steel 10% glass reinforcement

PUMP BODY: Nylon

DIAPHRAGM: Viton
Stainless steel

PUMP BODY: Aluminum

DIAPHRAGM: Teflon, Viton
HEAD: Teflon-coated Aluminum

DIAPHRAGM: Teflon-coated EPDM
Maximum pressure range 25 PSIG 25 PSIG 25 PSIG 28 PSIG 29.2 PSIG 71 PSIG
Vacuum range 0 – 20 in Hg 0 – 20 in Hg 0 – 25 in Hg 0 – 25 in Hg 0 – 23 in Hg 8.4 – 25.2 in Hg
Maximum unrestricted flow 2.5 LPM 5 LPM 6 LPM 11 LPM 7.6 LPM and 0.268 CFM 30.2 LPM
Operating environment 41° F to 158° F (5° C to 70° C) 41° F to 158° F (5° C to 70° C) 41° F to 158° F (5° C to 70° C) 41° F to 158° F (5° C to 70° C) 32° F to 104° F 32° F to 140° F
Humidity 0 – 95% RH 0 – 95% RH 0 – 95% 0 – 95% 0 – 100% RH in vapor state 0 – 100% RH in vapor state
Nominal motor voltages 6V, 9V, 12V DC
Other voltages available upon request
6V, 9V, 12V DC
Other voltages available upon request
6V, 9V, 12V DC
Other voltages available upon request
6V, 9V, 12V DC
Other voltages available upon request
115V, 60 Hz, 1PH or 230V, 50 Hz (dual voltage motor) 115V, 60 Hz, 1PH or 240V, 60 Hz
Current range (dependent on motor type, voltage, pressure/vacuum, and flow requirement) 100mA – 500mA 100mA – 500mA 50mA – 900mA 50mA – 900mA 1.5A @ 115V, 60 Hz

0.95A @ 230V, 50 Hz
3.6A @ 115V, 60 Hz

2.1A @ 230V, 50 Hz
Lifetime rating of the pump/motor Up to 10,000 hours based on brushless design and user specifications Up to 10,000 hours based on brushless design and user specifications Up to 10,000 hours based on brushless design and user specifications Up to 10,000 hours based on brushless design and user specifications For 24×7 use, inspect diaphragm after 6-8 months

Up to 20,000 hours for motor
For 24×7 use, inspect diaphragm after 6-8 months

Up to 20,000 hours for motor
Low-flow x x x x
Extended or continuous operation x x

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