Steel relief valve RVA0.M18

compacthydrauliccartridge

The RVA valve combines in one compact cartridge the typical function of shock relief valve and anti-cavitation through the built-in check valve. In the relief function when the pressure at the Inlet (1) reaches the valve setting, the valve starts to open to tank (2) and thanks to the effect of the deflector integrated into the poppet it provides a limited pressure rise. The cartridge offers excellent response to load changes in hydraulic circuits requiring low internal leakage as well as limited hysere- sis. Innovative design on internal dampening part gua- rantees great stability. In the free reverse flow function a light bias spring allows for ease of flow passage from side to nose (2 to 1) by lowering the internal seat. Technical Features All external surfaces are zinc plated and corrosion-proof. All valve parts are made of high strength steel. Poppet is hardened and ground to guarantee minimal wear and extended service life; internal seat is also ground and made of hard steel providing same advantages. Positive stop prevents springs from going solid. Optional spring ranges to 350 bar (5000 psi). Metric cavity. Maximum internal leakage - 5 cc/min to 80% of nominal set point Pressure settings - established @ 5 l/min Anti-cav cracking pressure - < 0,5 bar temperature - -30°C to 110°C fluids - Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt orientation - No restrictions installation torque - 50-55 Nm seal kit code - SK.101 weight - 0,117 kg