Flexflo 887 Series Surge Reliever Manual | 3
Copyright 2020 Baker Hughes Company. All rights reserved.
Pressurize/Charge the 888 Bottles:
1. Using an external pressure source to charge/recharge the
Bottle system.
a.
Remove plug if needed from Charging supply
connection. Connect an external pressure source with
either very dry air or Nitrogen Gas to the Charging
Supply connection.
b. Open the valve to the external pressure source.
c. Slowly open the Cylinder Valve and the Supply Valve to
pressurize the Bottles and the Jacket Space.
d. Allow the Pilot Bottle system and the Jacket to charge
up to the desired set point pressure, if no leaks in the
system are detected. Close only the Supply Valve
once the desired Jacket pressure and the Bottles are
pressurized to the desired set point.
e. Snug the two threaded Collars and tighten the two Lock
Nuts to 8 ft-lbs (10.8 Nm).
Cylinder
Connector
Charging Supply
Connector
Figure 4 - Jacket Assembly
Flexflo Surge Reliever Adjustment Procedure:
Gauges must be rated for higher than the maximum pressures
required at both the Inlet and the Jacket Loading ports of the
Flexflo Surge Reliever.
1. Increase the pressure in the Jacket Loading port to a
pressure slightly (approximately 50 psig or 3.45 barg) above
the desired Relief Set Point pressure (the Line pressure
where the Flexflo Surge Reliever will start to open and relieve
the upstream pipeline pressure). If necessary increase the
Line pressure at the same time as the Jacket pressure.
Do not exceed the maximum rated differential pres-
sure of the Tube at any time. Refer to the nameplate
for the maximum differential pressure rating for the
Flexlo tube.
2. Gradually apply and maintain the desired Line pressure to
the inlet of the Flexflo Surge Reliever.
3. From the Tube Differential Pressure Table obtain:
a. the full open differential pressure DF Maximum for the
size and tube material in use at the applications coldest
temperature.
b. The differential pressure where the Flexflo Surge
Reliever tube begins to flow DF Minimum for the size
and tube material in use at the applications coldest
temperature.
Note: The Tube Differential Pressure Table informationshows
average values and variations of+/- 5% can be expected.