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

 
 

IS:778-1984 GATE VALVES FLANGED : CLASS 1

S. No
Size
 
DIMENSIONS IN MM
 
SPECIFICATION
366
15 mm
 
NOMINAL SIZE
A
B
C
D
 
Gun Metal Gate Fanged Ends Vales ISI Marked
367
20 mm
 
15 mm (1/2")
72
100
55
--
 
to IS:778-1984, Screwed to Bonnet,
368
25 mm
 
20 mm (3/4")
76
105
60
--
 
Non Rising Stem, Solid Wedge,
369
32 mm
 
25 mm (1")
90
120
67
--
 
Hand Wheel Operated
370
40 mm
 
32 mm (1.1/4")
100
135
80
--
 
Screwed Female Ends to BSP
371
50 mm
 
40 mm (1.1/2")
110
160
90
--
   
372
65 mm
 
50 mm (2")
120
180
100
--
 
HYDAULIC TEST PRESSURE
373
80 mm
 
65 mm (2.1/2")
140
220
115
--
 
Body - 1.5 MPa, Seat & Back Seat - 1.0 MPa
374
100 mm
 
80 mm (3")
150
255
125
--
   
     
100 mm (4")
190
315
156
--
   



MATERIALS
PART NO.
NAME OF PART
MATERIAL
SPECIFICATION
1
Body, Wedge
Gun Metal
IS:318 LTB-2
2
Bonnet, Stuffing Box & Gland
Bronze/Forged Brass
IS:318 LTB-2 IS:6912-FLB
3
Stem
Forged Brass
IS:6912 FLB
4
Gland 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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