Standard Valves - 412 | Sectional Parallel

It seems like you're asking about hydraulic directional control valves, specifically those with a "sectional parallel" configuration, and perhaps referencing a "412" series or model. Let's break down what that means:

Directional Control Valves:

These valves control the direction of hydraulic fluid flow within a hydraulic system. They are essential for operating hydraulic cylinders, motors, and other actuators.   

Sectional Valves:

These valves are assembled in sections that enable you to integrate several functions of a valve into one package. Each section regulates a hydraulic function, like lift, tilt, or swing.   
This modular structure allows for greater flexibility and individuality in the applications of hydraulic systems.   

Parallel Circuit:

In a parallel circuit, every valve section gets full pump pressure. This allows several functions to be operated at the same time, but the flow will be divided between them.
If one function needs more flow or resistance, it can slow down the other functions.

"412" Series/Model:

The "412" likely refers to a specific product line or model number from a manufacturer. Without the exact manufacturer, details are hard to provide precisely. However, it likely indicates things like flow capacity (in gallons per minute, or liters per minute), pressure rating (in PSI or bar), spool configurations like 3-position, 4-position, detents, and port sizes and types.