Standard Material Specifications
(Gate valve)


Part
No.
Part Name
Carbon Steel to ASTM
Alloy Steel to ASTM
Stainless Steel to ASTM
1
Body
A216 WCB
A352 LCB
A217 WC6
A217 WC9
A217 C5
A351 CF8
A351 CF8M
2
Seat Ring
A105
A105
304
316
3
Wedge
A216 WCB
A352 LCB
A217 WC6
A217 WC9
A217 C5
A351 CF8
A351 CF8M
4
Stem
410
410
304
316
5
Gasket
Reinforced Flat Graphite,or SS Spiral Wound W/Graphite or PTFE, or Reinforced PTFE 
6
Studs
A193 B7
A320 L7
A193 B16
A193 B8
7
Nuts
A194 2H
A194 4
A194 4
A194 8
8
Bonnet
A216 WCB
A352 LCB
A217 WC6
A217 WC9
A217 C5
A351 CF8
A351 CF8M
9
Backseat
410
410
304
316
10
Packing B
Braided Graphite or  PTFE
11
Lantern *
410
410
304
316
12
Eyebolts
A193 B7
A320 L7
A193 B7
A193 B8
13
Nuts
A194 2H
A194 4
A194 2H
A194 8
14
Pin
Steel
Steel
S.S.
15
Gland
A182 F6
A182 F6
304
316
16
Gland Flange
A216 WCB
A350 LF2
A216 WCB
A351 CF8
A351 CF8M
17
Ball Bearing
DIN 711 T1
18
Stem Nut
A439-D2 or A276-410
19
Lubricator
Steel
20
Retaining Nut
Steel
21
Handwheel
Ductile Iron
22
Handwheel Nut
Steel
23
Split Pin
A36 (DIN94)
24
Nameplate
Stainless Steel or Aluminium
25
Rivet
A276-321 (DIN 660)
26
Packing A
Deformed Graphite Ring or PTFE

Note: *Class 150 gate Valve is not provided with Lantern.
**Other materials ( Alloy 20, AISI 321, AISI 347, Monel, Hastelloy, etc.) On request.