Advantage:

1.Open  valve  dexterously
2.Reliable sealing
3.Elastic memory better
4.Long service life

Materials for main parts:

1.Handwheel:   Ductile Iron QT450

2.bonnet :      Ductile Iron QT450

3.body:        Ductile Iron QT450

4.Wedge Disc:  Buna-N rubber or EPDM

5.Stem:        Stainless Steel 304 or Stainless Iron 2cr13

6.Sealing ring:  Buna-N rubber or Fluorous rubber

7.Screw:       Stainless Steel or Ordinary

1.Design of standard reference   " BS5163'

2.Flange connection:  "BS4504"  "EN1092" "ISO7005.2" and "GB/T17241.6"

3.Face  to  face length:  "BS5163"   "ISO5752"and "GB/T12221"

4.Test standard reference "BS5163"

Connection dimension of Main external :

Gate  valves