Many of Canada’s top industries work with hydraulic and pneumatic systems that require the use of a bleed valve or purge valve. Below, we’ll discuss these two valves, their differences, and their applications in industrial systems. Keep reading to learn where you can find quality bleed valves and purge valves from Hy-Lok Canada!
What Are Bleed Valves?
A bleed valve is a component that removes excess fluid, gas, air, and pressure from flow control systems and equipment. This tool helps prevent issues like pressure build-up, fluid/gas blockages, and, in turn, damage to your worksite’s systems and equipment. Bleed valves also allow you to control the direction of outflow for excess liquid or gas via a venting tube.
These essential safety components are widely used across industries where the movement of fluids is a vital part of their operations. Some key industry applications include oil and gas, chemical processing, water systems, aerospace equipment, and other related sectors.
What Are Purge Valves?
Purge valves are very similar to bleed valves, but operate at lower pressures and have a different release style. While bleed valves utilize a threaded bleed screw, purge valves employ a poppet and spring system to regulate the flow of liquids and gases. They also feature a vent hole to drain any excess fluid and gas buildup that may collect.
Why Are Bleed & Purge Valves Used in Hydraulic Applications?
Industries that rely on bleed and purge valves work with very sensitive liquid and gas materials. If these substances are not adequately controlled, they can cause equipment damage, operational problems, or safety hazards like fires and carbon monoxide leaks.
Some common applications for bleed and purge valves include:
- Manage pressure and over pressurization in oil and gas systems (pipelines, pressure vessels, storage tanks, etc)
- Control the release of volatile (potentially dangerous) gases and liquids in chemical processing, storage tanks, reactors, and filtration tanks
- Remove excess air from water systems in HVAC, plumbing, and pipeline systems.
Overall, both bleed and purge valves are vital components across a wide variety of fluid control systems and industries. They help equipment operate smoothly, prevent system malfunctions, and are essential safety devices for industrial and commercial applications that require flow control.
Our Bleed and Purge Valves from Hy-Lok
If you need high-quality, durable bleed and/or purge valves for your workplace, partner with Hy-Lok Canada! Since 1977, we have been the leading manufacturer of components for hydraulic applications across Canada’s top industries. Here’s what you can expect from our products:
Bleed valve key features:
- Pressure ratings up to 10,000psig (689bar) at 100°F (37°C)
- Temperature rating from -65°F to 850°F (-54°C to 454°C) with stainless steel, -20°F to 450°F (-29°C to 232°C) for carbon steel, and from -65°F to 500°F (-54°C to 260°C) with alloy 400.
- Backstop screw that prevents accidental removal of the stem
- Chrome-plated stem threads and tips for prolonged service life
- Size range from 1/8 inch through 1/2 inch tubing and piping systems
- Compatible with a wide variety of end connections, including male/female SAE, ISO, and NPT threads, and our Hy-Lok tube fittings
Purge valve key features:
- Pressure ratings up to 4,000psig (275bar) for 316 stainless steel and up to 3,000psig (206bar) for carbon steel and brass at 100°F (38°C)
- Temperature ratings from -65°F to 600°F (-54°C to 315°C) for stainless steel, from -65°F to 400°F (-54°C to 204°C) for carbon steel, and from -20°F to 350°F (-29°C to 177°C) for brass.
- Vent hole to bleed excess liquid and gas from pipelines
- A crimped knurled cap that prevents the body from inadvertent removal
- Size ranges and end connection compatibility are on par with bleed valves
All of our components are 100% factory-tested to ensure their durability and resilience in various conditions. Our bleed and purge valves are tested with nitrogen at 1000 psig (69 bar) to a maximum leak rate of 0.1 SCM. You can also contact our team to request further testing to ensure all your bases are covered!
Get Quality Hydraulic Components from Hy-Lok Canada
Operating hydraulic equipment requires close attention to safety, which is why bleed and purge valves are crucial for so many worksites. You can find bleed and purge valves from Hy-Lok Canada today and improve the efficiency and reliability of your hydraulic equipment and machinery.
Check out our full online inventory for these and other products in our line-up!