![](https://www.ptt-inst.com/wp-content/uploads/2021/04/NV400_700.jpg)
NV400 Details
The NV400 is a series of high-pressure needle valves designed for shut-off applications with steam and other industrial fluids. The NV400B is a special version designed for use as a boiler water sample valve when connected to the bottom sample connection on a VPC TDS blowdown control valve.
![](https://www.ptt-inst.com/wp-content/uploads/2021/04/NV400_Table.jpg)