components:

1.body:ductile

 2.disc:ductile iron with NBR /EPDM/FPM

 3.stem:stainless steel

 4.gland:ductile iron

 5.hand wheel:ductile iron

appilication:

1.face to face is according to BS5163:1986

2.flange drilled is according to BS4504

 test:

1.working pressure :PN10    PN16

 2.shell pressure :   1.5Mpa   2.4Mpa

 3.seat pressure:    1.1Mpa    1.76Mpa