German NUOVA valve NUOVA model NUOVA price

NUOVA valves are directional control valves with more than two flow patterns and more than two oil ports. They are valves that enable communication, cutoff, and reversal of hydraulic oil flow, as well as pressure unloading and sequential action control. These are directional control valves that operate via the relative motion between the spool and the valve body. There are two types: rotary valve and slide valve. They are classified into two-position, three-position, etc., based on the number of working positions where the spool stays within the valve body; and into two-way, three-way, four-way, and six-way, etc., based on the number of oil circuits connected to the valve body. Methods for operating spool movement include manual, mechanical, electric, hydraulic, and electro-hydraulic types.

NUOVA valve operating principle

The six-way reversing valve mainly consists of components such as the valve body, sealing assembly, cam, valve stem, handle, and valve cover (Figure 1). The valve is driven by the handle, which rotates the valve stem and cam. The cam provides positioning drive and locks the opening and closing of the sealing assembly. When the handle is rotated counterclockwise, the two sets of sealing components close the two lower channels under the action of the cam, while the two upper channels connect to the inlet of the piping system. Conversely, the two upper channels close, and the two lower channels connect to the inlet of the piping system, achieving reversal without stopping.

NUOVA valve advantages

Accurate action, high degree of automation, and stable, reliable operation, but it requires additional drive and cooling systems, resulting in a more complex structure; the disc-type structure is simpler and is mostly used in production processes with smaller flow rates. In industries such as petroleum, chemical, mining, and metallurgy, the six-way reversing valve is an important fluid reversal device. This valve is installed in the pipelines of thin-oil lubrication systems that transport lubricating oil. By changing the relative position of the sealing components within the valve body, the various channels of the valve body are connected or disconnected, thereby controlling fluid reversal and start/stop operations.

NUOVA valve functions and applications

Reversing valves, also known as Christ valves, are a type of valve with multi-directional adjustable channels that can change the direction of fluid flow as needed. They can be divided into manual reversing valves, solenoid reversing valves, electro-hydraulic reversing valves, etc. During operation, the drive shaft outside the valve rotates via the external drive transmission mechanism, driving the rocker arm to activate the valve plate. This allows the working fluid to flow from the left inlet to the lower outlet of the valve, or from the right inlet to the lower outlet, achieving periodic flow reversal. This type of reversing valve is widely used in petroleum and chemical production, and is most commonly used in synthetic ammonia gasification systems. In addition, reversing valves can be constructed with a disc-type structure, mostly used for occasions with smaller flow rates. During operation, only the handwheel needs to be turned to change the direction of the working fluid via the valve disc.

Weidou Intelligent Technology specializes in selling German NUOVA valves, NUOVA safety valves, NUOVA globe valves, NUOVA control valves, NUOVA solenoid valves, NUOVA ball valves, NUOVA proportional valves, NUOVA diaphragm valves, NUOVA butterfly valves, NUOVA hydraulic transmission valves, NUOVA check valves, NUOVA pressure reducing valves, NUOVA relief valves, NUOVA sequence valves, NUOVA balance valves, NUOVA throttle valves, NUOVA reversing valves, all original imports from Germany. We welcome customers to inquire and order.