Direct Acting Relief Valves - A04B2HZN

GLOBAL - Parker’s direct acting relief valves are available in several cavity sizes and are designed for continuous duty applications with pressures up to 420 bar (6000 psi) and flows up to 200 lpm (53 gpm).

Direct acting relief valves are available in -04 to -10 cavity configurations and are designed for continuous duty applications. All products are available with a variety of spring options with pressure ranges as high as 6000 psi in some models. There is a variety of pressure adjustment styles available including screw adjustable, and tamper resistant styles. Tamperproof, factory options are also available. Full flow direct acting relief valves can be used as a main system relief valves in low flow circuits. Direct acting valves are fast acting, therefore, these devices and can be an economical solution for clipping pressure spikes. Poppet style direct acting valves have low leak conditioned seats and are often used as a port relief in a cylinder control applications. Small, low flow, direct acting valves are ideal for controlling pilot circuits or limiting load sense pressure. Standard bodies in aluminum and steel are offered as well as a variety of seal options. Typical applications are in mobile equipment, such as agricultural machines, aerial equipment, refuse vehicles, industrial power unit systems, mining equipment, and other heavy duty fluid power pressure control circuits. Common circuit applications include: Cross port relief, swing relief, port relief, pilot relief, system relief, pressure limiting, spike relief, motor braking, steering relief, load sense relief. Features • Hardened, precision ground parts for durability • Compact size for reduced space requirements • Low leakage design poppet design available • Fast response • All external parts zinc plated. Multiple spring ranges are available. All valves are 100 % tested.