SALEM, Ohio--Hunt Valve (www.huntvalve.com), a fluid power engineering company specializing in severe-duty valves and components, has released pump bypass control valves for high-pressure centrifugal pump systems that require minimum flow to provide cooling for the pumps when there is no system demand. With fail-safe features included, this valve technology provides increased pressure for the application while saving energy and improving efficiency.
“Traditionally, many steel mills have implemented continuous bypass flow as a fail-safe method of ensuring that pumps don’t overheat or get damaged. While this method is fail-safe, it wastes a tremendous amount of energy,” explained Brad Sterner, Hunt Valve’s president and CEO. “The integration of Hunt Valve’s pump bypass control valves (with built-in fail-safe features) delivers minimum flow for pump cooling when needed and directs 100 percent flow to the descale header. This method allows steel producers to direct higher flows and pressures to improve the descale efficiency and product surface quality or shut down a pump due to the elimination of the continuous bypass flow from multiple pumps—thereby eliminating the energy-wasting, continuous bypass flow when full flow to the system is required.”
Hunt Valve offers the following versatile valve products for pump bypass control:
- Proportional Ceramic Pump Bypass (Minimum Flow) Valve
Hunt Valve’s proportional poppet valve for descaling pump bypass applications lasts three to five times longer than traditional poppet or automatic recirculation control (ARC) valves. This valve’s ceramic technology optimizes the component’s useful service life and eliminates pilot shifting.
The proportional poppet valve eliminates water hammer in the system using a variable speed stroke profile—a technology that no other company is using for descale valves in the steel industry. Minimizing the effects of water hammer and system shock, the proportional pump bypass valve promotes safety, reduces annual operating costs and decreases unscheduled downtime in the plant.
In addition, Hunt Valve is the only company using electromechanical linear actuator technology in its proportional poppet valve design to eliminate the shifting reliability issues commonly associated with media pilot valves.
- Hollow Spool Pump Bypass (Minimum Flow) Valve
Hunt Valve’s Mega-Flo B Descale Valve is known around the world for its innovative design and quality engineering. This fast-acting, smooth-shifting product consistently provides high-pressure water when needed. Formed from heat-treated and corrosion-resistant stainless steel, the valve’s radial-ported plunger is precision-machined and then plated with hard chrome.
The valve’s inherent wear-resistant design and stringent material specification help ensure a long service life for this critical component. In fact, the valve’s smooth-shift operation helps prolong the life of all components in the descaling system.
Visit Hunt Valve’s Fluid Power Engineering Innovations and System Resources page to learn more about selecting and maintaining valves that maximize the safety and efficiency of high-pressure hydraulic or pneumatic systems.
About Hunt Valve
Hunt Valve brings nearly 100 years of fluid power engineering innovations and solutions to a wide range of industrial and military customers. It specializes in severe-duty valves and complementary engineered components and system solutions for applications that include primary metals (steel, aluminum), energy (nuclear, hydro, downstream oil & gas), process (chemical) and U.S. Navy nuclear-powered vessels, including all submarines and carriers in operation as well as the Virginia Class, Ford Class and soon-to-be-in-production Ohio Replacement. To learn more about the Experts in Extreme Engineering, visit http://www.huntvalve.com.
Figure 1: Hunt Valve’s pump bypass control valve installed at a steel plant. (click to view the high-res image)