Design,manufacture are according to standard of BS5163-86 Type B〔Gate Valve For Waterworks Purpose〕.
The
flange of the gate valve is according to PN1.6 Mpa and drilling to
PN1.6 Mpa flange of BS4504:Section 3.2-1989 for the integral cast
(ductile) iron flanges.(Unless otherwise specified)
Inspection is according to standard BS6755 PART 1 RATE A.(No Visible Leakage).
The valves for PN1.0 MPa and PN2.5 MPa are also can be designed and manufactured..
Material Specifications:
No.
Name of part
Material
BS Designation
Coating (350 microns)
Epoxy Resin or Epoxy fusion bonded
13
Handwheel
SG(Ductile) Iron
BS2789
Gr450/10
12
Square cap
SG(Ductile) Iron
BS2789
Gr450/10
11
Indication plate
Stainless Steely
BS970
Gr304S15
10
Bonnet
SG(Ductile) Iron
BS2789
Gr450/10
9
Gland
SG(Ductile) Iron
BS2789
Gr450/10
8
O-ring
EPDM
BS2494
7
Spindle collar
Stainless Steel
BS970
Gr431S29
6
Spindle
Stainless Steel
BS970
Gr431S29
5
Spindle nut
Gunmetal
BS1400
LG2
4
Gate
SG(Ductile) Iron
BS2789
Gr450/10
3
Body
SG(Ductile) Iron
BS2789
Gr450/10
2
Gate sealing ring
Gunmetal
LG2
1
Body sealing ring
Gunmetal
LG2
Note: Other materials and specifications are subject to customer's requirement