Relief Valves

Hydraulic Relief Valves

Northern Tool offers professional-grade adjustable relief valves that come ready to install and protect your hydraulic system from overload. These relief valves won’t jam, seize or lock. Constructed with industrial-grade materials, these units can withstand any work environment or hydraulic system. Built to reduce noise, chatter and heat, these high-performance relief valves offer a range of port sizes and GPM flow rates. The relief valves in this lineup feature GPMs ranging from 10–50; max PSI from 2500–3000 and 1/2in–1in. and more.

A bestselling relief valve here is a 1/2in. unit preset at 1500 PSI@ 12 GPM and adjustable to 2500 PSI. This valve delivers ball/spring-type direct acting relief with fast opening suited for pressure spike protection. Relief is externally adjustable for convenience. Another bestseller here is a 3/4in. relief valve preset at 1500 PSI and adjustable from 1000–2500 PSI. This compact direct-acting adjustable relief valve features an inline mounting ball/spring relief and standard steel or hardened seat.

One of the relief valves in this selection with a 25 GPM capacity is a ready-to-install inline unit with an adjustable ball spring-type relief that won’t jam, lock or seize. It always opens to help protect your hydraulic system from excess pressure. This durable, dependable zinc-plated steel and aluminum body with a chrome alloy steel ball resists wear and tear. With this relief valve, PSI is adjustable from 750–3000 PSI. If you’re looking for a relief valve with a 50 GPM capacity, check out a unit with a 1in. working port and 3000 max PSI. This unit provides pressure relief to specific functions in your truck's hydraulic operations. With this relief valve, you can choose from a range of preset pressure ratings from 1650 PSI–2500 PSI. As you browse this selection, be sure to check out any customer reviews on valves of interest to you. These reviews often provide answers to lingering questions as well as insight helpful to purchasing a unit for your hydraulic system. You’ll be happy to find some of the top brands in the industry, including Brand Hydraulics and Hydroworks.