Made in Japan

Manufacturer: NIPPON DAIYA VALUE Co., Ltd.

Model: Floating ball type

NDV provides various types of ball valves suitable for a wild range of fields.
It is possible to select from a wide range of lineups such as multi-way valves and V-port valves to suit your application, in addition to the standard fire-safe type.
We also apply requests for special purpose valves used under high pressure and those for shield machine and nuclear power plants.

Fig. 1

Features

The floating ball type has a non-fixed connecting structure of the ball and stem so that the ball moves in the flow direction when fully closed as shown in Fig. 2. With this structure, a self-sealing effect can be expected by pressing the balls against the secondary seat due to the differential pressure when the valve is fully closed. It is mainly used for low pressure (up to JIS20K, CL300) and small bore size (up to DN200).

①Easy operation of fully open and closed

Fully open　Fully closed

Opening and closing operations can be performed quickly by turning the stem 90 degrees.
In addition, the open/close state of the valve is clearly indicated by the position of the lever handle, so it has excellent visibility.

②Excellent sealing

PTFE and other plastic materials are used for the valve seat, which makes it easier to stop the fluid with excellent sealing performance.

③Extremely low pressure loss

Since its flow path has the same shape as the piping and there are few elements that give resistance to the fluid, the structure has an extremely low pressure loss when fully opened.

④Compatible with high-temperature and high-pressure fluids

⑤Easy to automize

Our ball valves can be equipped with various types of actuators by simply attaching a yoke and coupling.