DRESSER RB 4700 Inbetriebnahmeanleitung Seite 32

SSV 8600
(for RB 4700 models with integrated SSV 8600)
This device consists of a valve body 1, a pressure
switch used to compare the pressure 2, a control
lever 3 and a stem-valve plug assembly 4 The
shut-off valve is triggered when the pressure val-
ue to be checked in the control chamber 5 in-
creases or decreases beyond the established val-
ues, moving from its balancing position the dia-
phragm assembly 6; as a consequence the control
Item Description
1 Valve body
2 Pressure switch
3 Levers system
4 Stem-valve plug assembly
5 Motorisation chamber
6 Diaphragm assembly
7 Valve plug spring
8 Valve orifice
9 Screwing ring
10 Screwing ring
11 Resetting lever
12 Outlet chamber
13 By-pass
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lever 3 triggers, releasing the stem-valve plug as-
sembly 4 By effect of the force of the spring 7, the
assembly 4 comes immediately into contact with
the valve 8 cutting automatically the flow of the
gas