GUN METAL SAFTY VALVE
Specification & Features:
Straight Pattern, Open Discharge,
Screwed Male Threads at Inlet to BS 21.
Angle Pattern, Enclosed Discharge, Screwed Male Threads
at Inlet and Screwed Female Ends at Outlet to BS 21.
These Valves start opening at the set pressure & open in
direct proportion to the increase, in order of set pressure.
These should be installed nearer to the pressure vessel they
protect. When installed, they should be one size smaller
than the pipeline size.
CODE # GM-510
CODE # GM-511
Materials of Construction:
S.No. |
NAME OF PART |
MATERIAL |
STANDARD |
1.
2.
3.
4.
5.
6.
7.
8. |
Adjusting Screw
Locking Nut
Spring Chamber
Spring Disc
Spring
Stem
Disc
Body |
Bronze
Brass
Bronze
Bronze
Carbon Steel
HT Brass
Bronze
Bronze |
BS: 1982 CC491K
BS: EN 12165 Gr. W617N
BS: 1982 CC491K
BS: 1982 CC491K
EN 44
BS: 1982 CC491K
BS: 1982 CC491K |
TESTING:
Each Safety / Relief Valve is tested for Body and Seat Tightness at 300 Psig (Hyd.)
Sizes / Dimensions:
Sizes |
Dimensions (mm) |
Inches. |
mm |
H |
L |
1/2" |
15 |
148 |
38 |
3/4" |
20 |
160 |
39 |
1" |
25 |
178 |
48 |
1.1/4" |
32 |
180 |
50 |
1.1/2" |
40 |
210 |
59 |
2" |
50 |
255 |
59 |
Setting :
The Safety / Relief Valve is normally pre-set at 5 Bar but is adjustable from 2 Bar to 10 Bar. To set the
pressure, connect the male inlet end of the valve to the supply system which is fitted with a pressure
gauge. Unscrew the locking Nut. Set the Adjusting Screw with a spanner by turning clockwise to
increase the