Clow Canada
55 Frid Street, Unit 1
Hamilton, Ont. L8P 4M3
Phone 905-548-9604 Founded 1834 Acquired 1990

Clow Canada is the largest Canadian manufacturer of valves and hydrants. Its facility is in Saint John, New Brunswick.


  • C509 Resilient Wedge Gate Valves 2"-12"
  • C515 Resilient Wedge Gate Valves 4"-54"
  • Class 150 Butterfly Valves
  • Class 250 Butterfly Valves
  • D67M Premier
  • Double Disc Gate Valves
  • Eccentric Plug Valves
  • Flap Valve
  • Floor Stands
  • Horizontal Swing Check Valves
  • iHydrant
  • Increasing Check Valves
  • Indicator Posts
  • M67 Brigadier
  • Mud Valves
  • Pressure Relief Valves
  • Rotating Disc Gate Valves
  • Shear Gate Valves
  • Sluice Gate Valves
  • UL/FM Butterfly Valves
  • UL/FM C509 Resilient Wedge Gate Valve 2"-12"
  • UL/FM C515 Resilient Wedge Gate Valve 4"-16"
  • UL/FM Check Valves

Clow Canada, established in 1834 as the Thomas McAvity & Company, is recognized as one of the most experienced manufacturers and suppliers of ductile iron products in the country. Located in Saint John, New Brunswick, our comprehensive facilities and innovative technologies make us an economic, environmental and community leader. From environmental responsibility to employee training and community outreach, we work every day to make sure that we are the very best we can be.

Take our dedication to quality. Since our origin, we’ve manufactured more different types and sizes of municipal waterworks equipment than any other company in Canada. With a wide variety of high-quality products, Clow Canada has a history of excellence that we strive to maintain. Whether that means improvements to our safety standards and environmental regulations or new technology inside the plant, we’re making sure that quality remains our calling card.

Clow’s cutting edge facilities produce a wide range of valves, hydrants and ancillary products. From our 75mm butterfly valve to the high-capacity series 40 Union Flange, we make products of all sizes for customers across the country. From British Columbia to Newfoundland, we sell Clow products to customers who value quality. Where other companies cut corners, we’ve invested millions of dollars to create a safe and modernized plant environment for all of our workers. Because when it comes to Clow, excellence is the only answer.