"This Northman Fluid Power Single-Station Subplate for mounting an industrial hydraulic directional control valve conforms to the National Fluid Power Association NFPA D05 mounting pattern. It accepts Northern Tool valves in the 20150 and 20250 Series. The 1/2in. NPT female ports are side mounted for the Pressure, Tank, A and B ports. Accessory Type Subplate. Single Station Subplate NFPA D05 Mounting Pattern 1/2in. NPT Female Ports Side Port Location Port Connections for Pressure, Tank, A and B Ports"