SM-303-B Models
Features:
- Low flow provides minimal flow velocities thereby reducing the effect of pipe erosion and noise caused by vibration.
- Rated for temperatures to 220 degree F and line pressures to 150 PSI
- Requires only 33 watts of power
- Dry run cutout provided on pumps for hot water recirculation
Download Brochure
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Material of Wetted Parts:
- Brass Housing
- 316 Stainless Steel Rotor and Separating Wall
- Noryl Impeller
- Ceramic Bearing Ball
- Carbon Graphite Bearing Cap
- EPDM O-Ring
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Model |
Volts |
Cycle |
Phase |
Watts |
Amps |
Maximum. Pressure
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Maximum Temperature |
Weight (lbs.) |
SM-303-B |
115 |
60 |
1 |
33 |
0.30 |
150 PSI |
230 degees`F |
2.5 |
Performance Curve:

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Dimension Drawings:

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Ordering Information:
Standard pump configuration includes brass inline housing,
concealed capacitor, and internal terminal strip w/ wiring diagram for hard wiring.
Housing Connection Codes:
BS 1/2" - Brass inline housing with 1/2"sweat fittings
BT 1/2" - Brass inline housing with 1/2" NPT female thread fittings
Options Available:
- 6 ft. line cord with plug (115V models Only)
- 230V, 60Hz, 50Hz, and 24VAC motors
- Adjustable Thermostat (95-158F)
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Operating Costs Savings Summary
Models SM-303-B and SMT-303-B Series
Circulating Pumps
- Based on 3 bedroom home with 4 occupants, water heater 60 feet from farthest fixture, insulated copper ¾" hot water supply and ½" recirculating lines on conventional system with a Laing SMT-303-B Recirc Pump.


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Ready to order or have some questions?
Simply pickup the phone and call 1 306 244 8808 or if you would like us to contact you, simply email us at info@wsetech.com
Barry ext 242
Trevor ext 232
Brayden ext 239
Grant ext 230
For Dealer inquiries
Linda ext 226
Become a Dealer click here
WSE Technologies
303 - 47Str. E
Saskatoon
Saskatchewan
Canada
S7K 5H2
Ph: 1 306 244 8808
Fax: 1 306 244-9970
We accept Visa and Master card.
Download Operator's Manual (pdf 381k)