Machinery that operates on a low or high-pressure fluid system requires high-quality components to run smoothly and safely. At Hy-Lok, we manufacture top-level block and bleed valves for oil and gas, food processing, agriculture, and other industries whose equipment runs on fluid systems. Block and bleed valves are essential to these systems and contribute to the safe operation of your equipment. Below, we’ll discuss the role of block and bleed valves and their key features that make Hy-Lok your go-to choice for fluid system components.
The Role of Block and Bleed Valves in Fluid Systems
Block and bleed valves are critical to the safe operation of high-pressure and low-pressure fluid control systems. These components isolate, monitor, and maintain the flow of liquids and liquid gases within pipelines and industrial processes. They are generally used in systems that process non-toxic and non-flammable fluids. The ultimate function and purpose of the block and bleed valve is to prevent liquid from mixing with different system fluids and halt workers’ exposure to these substances.
These components comprise one isolating valve and one that relieves or “bleeds” any trapped pressure between two valves. They can be paired with instrumental fluid handling components such as gage/root valves and manifolds to calibrate controlled devices or vent signal line pressure, allowing those operating the system to relieve fluid slowly and safely. Other block and bleed valve applications include removing entrapped air from hydraulic and closed liquid systems and draining filters of liquid in air and gas equipment.
Key Features of Hy-Lok’s Block and Bleed Valves
Our block and bleed valves from Hy-Lok contain several features that make them invaluable for fluid system applications. Not only are these features beneficial to the operation of your fluid system, but they also act as a protection against system failure. For example, these valves contain a backstop screw, which prevents the stem from being removed accidentally. The stem threads and tips are also chrome-plated, adding an extra layer of protection against wear and increasing the valve’s service life.
Other key features include:
- Pressure ratings up to 10,000 psig at 100F (37C)
- Temperature ratings from -65F to 850F for stainless steel valves, from -20F to 450F for carbon steel valves, and from -65F to 500F for alloy 400.
- A vast size range from 1/8 to 3/4 inch tubing and piping systems
- Compatible with a variety of end connections from Hy-Lok and other manufacturers, including male/female NPT, ISO, SAE threads, and tube fittings
Why Choose Hy-Lok’s Bleed Valves for Your High-Pressure Fluid System
Since 1977, Hy-Lok has manufactured top-of-the-line components for fluid systems, and our block and bleed valves are no exception. Each valve in our line-up is rigorously tested with nitrogen at 1000psig to a maximum leak rate of 0.1 SCCM and a hydrostatic shell test at 1.5X its working pressure. Their superior design and engineering offer a reliable means for venting trapped pressure, ensuring optimal safety during testing and maintenance procedures. Our valves are manufactured with quality in mind and are guaranteed to provide long-lasting function and performance.
Contact us today to order a block and bleed valve from our catalogue.
