-
Pull rope upward to bring valve stem assembly
through opening of shell to position
anti-extrusion ring shoulder inside
opening of shell.
-
Install “O” ring seal on plate (gas end) over
rope and valve stem, install in opening of
shell.
-
Holding bladder puller, pass plate (gas
end) over rope and valve stem, and install
in opening of shell.
-
Pass locknut (gas end) over the rope, install
on valve stem and tighten securely.
-
Remove bladder puller and 1/8" NPT pipe
plug and install pressure gauge and needle
valve on valve stem. Use Teflon tape on 1/
8" NPT threads to ensure sealing.
-
Precharge to required pressure with dry nitrogen.
(See precharging section in this
manual.)
-
Remove charging hose. Carefully test gas
valve, needle valve and pressure gauge for
leakage by using a soapy water solution.
-
Replace and tighten gas valve cap to extreme
finger tightness.
-
Check and tighten locknut, if necessary.
-
Install valve guard using four socket head
cap screws
-
Surge suppressor is now ready for service.
Gas Valve Instructions
-
Gas valve installation: Apply light coating
of lubricant to sealing “O” ring. Tighten 3/
4 Hex. body against top surface of valve
stem to 100-110 inch-pounds to torque.
Never loosen body assembly to discharge
gas pressure.
-
To open gas valve: Remove gas valve cap
(Using suitable wrench, hold 3/4" Hex. body
from turning and with wrench turn 3/4" Hex.
top swivel nut (left hand) counter clockwise
approximately three turns to open
valve.
-
To close gas valve: Tighten 3/4" Hex. top
swivel nut (right hand) clockwise to 50-70
inch-pounds of torque. Replace and
tighten gas valve cap to extreme finger
tightness.
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Gauging Head Assembly
Consists of air chuck, bleeder valve and gas
charging (tank) valve mounted into an adapter
and attached as one unit directly to the gas
valve assembly of surge suppressors. When
attached to any size surge suppressor, the
gauging head assembly enables gas precharge
to be checked, increased or decreased.
Readings of surge suppressor operating
pressure can also be taken using the
gauging head assembly.
Charging Hose Assembly
Furnished to connect the gauging head assembly
to gas cylinders in order to increase
precharge to proper pressure. It consists of a
length of hose, attached to a swivel connector
on one end and a gland nut assembly on
the other. Also required is a pressure gauge of
the appropriate range: 0-100 PSI; 0-300 PSI; 0-
600 PSI
Operation
Note A — Precharge: To read or adjust gas
pressure of ”precharge” pressure, liquid must
be drained from fluid side of surge suppressor
to zero hydraulic pressure.
Note B — Operating Pressure: To read hydraulic
pressure or “operating” pressure, do not drain
fluid from surge suppressor. Read hydraulic
pressure while unit is in normal operation.
Installation
- Remove valve guard and valve cap from
surge suppressor. See Notes A & B before
proceeding.
- (For units up to and including 10 gallons)
To mount the gauging head, mount swivel
of air chuck on surge suppressor’s gas valve stem, compressing gasket in swivel
to prevent gas leakage. Using two
wrenches, keep the bottom nut of the gas
valve stationary and rotate the top nut of
the valve in a counterclockwise direction,
opening the gas valve.
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