Find hydraulic relief valves including high pressure relief valves, industrial hydraulic relief valves and more. Use the time-saving Request for Quote tool to submit your inquiry to all hydraulic relief valve manufacturers and suppliers you select.
Since 1912, Fulflo has been providing "chatter free" valves that modulate to control pressure: hydraulic bypass relief valves, oilfield valves, pilot valves, pressure regulator valves & hydraulic pressure control valves, which mount in any position. Our hydraulic by-pass relief valves measure from 1/4 - 4".
At Canyon Engineering Products, we design and build our products to meet your specifications. Our product line includes hydraulic valves, hydraulic flow control valves, hydraulic check valves and hydraulic cartridge valves. Our products are competitively priced and tested before delivery.
The best in hydraulic service, sales and customization for 40 years. Our full line card of brand name hydraulic components includes valve products such as hydraulic valves, pneumatic valves, ball valves, direction & flow control valves, check valves, cartridge valves, proportional valves, etc.
Force America is a provider of motion and control systems. We also design and produce valves including cartridge valves, check valves, hydraulic valves, and valve accessories. We have designers available for your application. See our online brochure for a full range of products.
Rely on Apex Hydraulic. We strive for the highest quality when manufacturing, servicing and refurbishing hydraulic valves, pumps, motors and cylinders. We are dedicated to providing solutions for our customers’ success. Request a Quote online today for your hydraulic valve, pump, motor or cylinder needs!
Hydraulic relief valves are used to limit the pressure in a hydraulic system. They achieve this result by allowing the pressurized hydraulic fluid to flow out of the system into an auxiliary passage. These valves protect hydraulic systems from being exposed to high pressures that exceed the mechanism’s specified limits. If the pressure in a hydraulic pump exceeds its designed pressure limit, internal leakage or damage to the pump components can occur.
In hydraulic control systems, the relief valve acts as a check valve, with a ball and an adjustable spring. When the fluid is diverted into the auxiliary passage, the pressure inside the hydraulic cylinder drops, allowing the valve to close again.
A hydraulic system will often employ several types of valves, although the hydraulic relief valve is usually the first encountered in the circuit. Hydraulic relief valves can be found in almost any mechanism that runs on hydraulic power, such as automobile transmissions, brakes, power steering, aviation, and in industrial and construction machinery.
