Singer Valve LLC - Surrey, BC (Serving Quebec)
Manufacturer
Manufacturer of pressure and surge anticipating relief valves. Features include quick opening relief, adjustable pressure settings and adjustable closing speed. Suitable for higher pressure and to protect against power failure surges or pressure waves. FM and UL approved. Three year warranty.
www.singervalve.com/products/22

Lifco Hydraulics, Inc. - St Catharines, ON (Serving Quebec)
Distributor, Custom Manufacturer
Distributor of valves including needle valves, relief valves, pressure control, pressure reducing, pressure regulating & pressure relief valves. Valves are available with features including multifunction proportionality, fine metering down to very low flows, pilot operated actuation, compact design with high power density. Valves are available for applications including motors, cylinders & hoists.
Brand Names: DMIC, Integrated, Northman, Parker, Tyrone
www.lifcohydraulics-usa.com/northman-pumps-...

Velan Inc. - SAINT-LAURENT, QC
Manufacturer, Custom Manufacturer
Lean manufacturing & Six Sigma capable & ISO 9001, ISO 9001:2000, ISO 9000:2001 & ISO 9001:2008 certified. Worldwide manufacturer of standard & custom automatic relief valves. Types of automatic relief valves include gate valves, globe valves, check valves, ball valves, knife gate valves, severe service valves, quarter-turn valves & cryogenic control valves. Automatic relief valves are available in different materials such as cast steel, forged steel, carbon steel, alloy steel, stainless steel, titanium, Monel® & Hastelloy®.
Brand Names: Velan
www.velan.com/velan/en/products/

Kinequip, Inc. - Locations
Distributor, Custom Manufacturer, Manufacturers' Rep, Service Company
Distributor of relief valves. Available in aluminum, brass & stainless steel. Features include adjustable crack pressure, zero leakage, tamper-proof adjustment & factory preset. Relief valves are available in port sizes from 1/8 in. to 1-1/4 in., cracking pressures from 0.5 psi to 150 psi, operating pressures up to 200 psig & temperature ranges from -320 degree F to +400 degree F. Seat materials used include Buna N, ethylene propylene, neoprene, silicone, PTFE & Viton®.
Brand Names: Circle Seal Controls
www.kinequip.com/index.php?mode=2&id=79

Controles Provan Associes Inc. - Saint-Laurent, QC
Distributor

Chem Action Inc. - Saint-Leonard, QC
Distributor

Varec Biogas - Calgary, AB (Serving Quebec)
Manufacturer
Custom manufacturer of relief valves. Specifications of relief valve includes sizes ranging from 2 in. to 12 in., leakage rate of 1SCFH or less at 90% of set point, & pressure setting up to 2 psig. Features include oversized pressure, & vacuum ports, replaceable, & interchangeable pressure, & vacuum seat rings, & is available in vent to atmosphere or pipe away models. Standard material for biogas includes 356 HT low copper aluminum, & optional all-weather coating of valve seats, & guides is available. Applications include protecting anaerobic digesters against physical damage caused by routine increases in internal pressure or vacuum.

Tyco Flow Control Inc. - Laval, QC
Distributor

Vision Instrumentation Inc. - Saint-Laurent, QC
Distributor

Ultraflo Systems Inc - Mississauga, ON (Serving Quebec)
Distributor, Manufacturer, Custom Manufacturer, Service Company
Manufacturer & distributor of different types of valves including hydraulic relief, remote control, rotary, rubber, safety, sampling, sanitary, servo, sight feed, slide, solenoid & special valves.