- Phone
- (800) 594-8431(780) 436-9051(800) 232-7376
- Fax
- (604) 594-4335
- Peter Pedersen Vice President
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Listing updated 25 September 2026
M. A. Stewart & Sons Ltd., founded in 1955, is a leading Canadian manufacturer and distributor of valves, fittings, and related products serving diverse industries such as oil and gas, chemical processing, pulp and paper, mining, water treatment, and power utilities. The company offers a wide range of valve types including gate, globe, ball, butterfly, and check valves, as well as specialized products like knife gate valves for slurry service and lead-free solutions for drinking water compliance. With headquarters in Surrey, British Columbia, and additional offices in Edmonton and Ajax, the firm provides comprehensive technical support, certifications (AWWA, NSF), and quality assurance documentation to meet stringent industry standards across Canada.