|
The
table provides details of the materials as per the specific conditions
of the service, some materials appropriate for the handling of uncommon
fluids are not included, but can be supplied upon customer's request.
- Carbon steel for general use.
- Stainless steel for corrosive.
- Alloy stell for low temp./high temp service.
- Alloy 20, Hastelloy, monel for highly corrosive or abrasive application.
Engineering Data
Design
|
BS 5351 / 1PI 6D / ANSI B16.34
|
Testing
|
BS 6755 Part-II / API 598
|
Flange End
|
ANSI B 16.5
|
SW End
|
ANSI B 16.11
|
Thread End
|
ANSI B 1.20.1 / ANSI B 2.1
|
Face to Face
|
ANSI B 16.10 / API - 6D
|
Material fo Construction
Parts
|
Material
|
SS 316
|
SS 304
|
Cast Steel
|
Body &
Side Piece
|
ASTM A 351
CR CF 8M
|
ASTM A 351
GR CF 8
|
ASTM A 216
GR WCB
|
Ball
|
ASTM A 351
CR CF 8M
|
ASTM A 351
CR CF 8M
|
ASTM A 351
CR CF 8M |
STEM
|
SS 316
|
SS 316
|
SS 316
|
Stud. &
Nuts
|
ASTM A 193 88m/
ASTM A 194 8M
|
ASTM A 193 88m/
ASTM A 194 8M |
ASTM A 193 88m/
ASTM A 194 8M |
Seat
|
PTFE / GPTFE
|
PTFE / GPTFE |
PTFE / GPTFE |
Body
Gasket
|
PTFE /
GRAFOIL
|
PTFE /
GRAFOIL |
PTFE /
GRAFOIL |
Gland
Packing
|
PTFE /
GRAFOIL
|
PTFE /
GRAFOIL |
PTFE /
GRAFOIL |
Lever
|
SS / CS
|
SS / CS
|
CS
|
Operating Torque
Size
|
FB
|
15
|
20
|
25
|
32
|
40
|
50
|
65
|
80
|
100
|
150
|
200
|
250
|
300
|
RB
|
20
|
25
|
32
|
40
|
50
|
65
|
80
|
100
|
150
|
200
|
250
|
300
|
|
Nt. Mt.
|
NM
|
4
|
8
|
14
|
28
|
33
|
55
|
75
|
100
|
245
|
505
|
1075
|
1600
|
2230
|
Flow Coefficient (Cv)
Flow
coefficients by defination is the volume of water in Gallon perminute
what will flow through valve at pressure drop of one psi.
Size
|
15
|
20
|
25
|
32
|
40
|
50
|
65
|
80
|
100
|
150
|
200
|
250
|
300
|
FB
|
28
|
50
|
96
|
200
|
270
|
500
|
1100
|
320
|
2400
|
5500
|
10000
|
13500
|
18200
|
RB
|
39
|
26
|
50
|
95
|
190
|
270
|
500
|
1100
|
1300
|
2400
|
5500
|
10000
|
13500
|
|
