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CATEGORY VIEW  - IS:778 GUN METAL/GLOBE VALVES/CHECK VALVES

 
 

IS:778-1984 GUN METAL GLOBE VALVES : CLASS 1

S. No
Size
 
DIMENSIONS IN MM
 
SPECIFICATION
357
15 mm
 
NOMINAL SIZE
A
B
C
D
 
Gun Metal Gate Vales ISI Marked to IS:778-1984
358
20 mm
 
15 mm (1/2")
60
90
55
26
 
Class-1, Screwed in Bonnet
359
25 mm
 
20 mm (3/4")
70
105
60
32
 
Non Rising Stem
360
32 mm
 
25 mm (1")
80
115
67
39
 
Screwed Female Ends to BSP
361
40 mm
 
32 mm (1.1/4")
95
127
80
49
   
362
50 mm
 
40 mm (1.1/2")
110
138
90
55
 
HYDAULIC TEST PRESSURE
363
65 mm
 
50 mm (2")
125
162
100
68
 
Body - 1.5 MPa, Seat & Back Seat - 1.0 MPa
364
80 mm
 
65 mm (2.1/2")
160
183
115
85
   
365
100 mm
 
80 mm (3")
180
207
125
98
   
     
100 mm (4")
216
250
156
127
   



MATERIALS
PART NO.
NAME OF PART
MATERIAL
SPECIFICATION
1
Body, Wedge
Gun Metal
IS:318 LTB-2
2
Stuffing Box & Gland Nut
Gun Metal
IS:318 LTB-2
3
Stem
Forged Brass
IS:6912 FLB
4
Disk & Disk Nut
Gun Metal/Forged Brass
IS:318 LTB-2/IS:6912 FLB
5
Handwheel
Cast Iron
IS:210 Gr FG-200
6
Screw/Bolt & Washer
Mild Steel
 
7
Gland Packing
Asbestos
IS: 4687
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