SMC VHS50-N06B-Z Hydraulic Pressure Control Valve

The SMC VHS50-N06B-Z is a three-port, single-action pressure-relief valve designed to protect hydraulic and pneumatic circuits by venting excess pressure. It uses 3/4 in nominal NPT ports and a die-cast aluminum body in the VHS50 family footprint, with an NPT end style for straightforward integration into standard hose and piping assemblies. The relief setting spans +0.1 MPa to +1 MPa (approximately 14.5 to 145 psi), allowing precise protection for actuators, cylinders, and regulators within that operating range. The valve's flow characteristic is specified with a Cv of about 6.4, supporting predictable relief performance across the range. Designed for compact installation in automation equipment, this model is suitable for safeguarding pressure-only relief at the source in three-port configurations, where one port serves the supply, one port the load, and the third vents to atmosphere.