choke valve needle advantages   

 

1. taking new craft  which assures the steady connection of valve cusp and valve stem without  sliding and swing

2. under our stretching test 65-70 style with trial pressure 70MPa, choke valve needle remained  intact

3. as its excellent performance, in practice appliction, can be used as stop valve

4. custom made is welcomed

needle cusp:  be made of tungsten carbide

needle  stem:  be made of stainless steel   

Our patent

 

1)The National Patent no. ZL201220654332.8 of our tungsten carbide seal valve plate
2 )The National Patent no. ZL201420000710.X  of needle valve plug
3)The National Patent no. ZL201420000709.7  of Connection Structure between valve core and sterm of choke valve