Flowserve 025000 Series - Manual (Page 2)

2
Flow Control Division
Kammer Control Valves
11.00
1.2 INSTALLATION
1.2.1 Clean tubing prior to installing.
1.2.2 If possible, install the valve in an upright position (ac-
tuator on top), to ease maintenance. An upright in-
stallation position is important with low-temperature
applications, in order to keep the distance between
the packing material and the medium as large as pos-
sible. The packing material then retains the ambient
temperature as much as possible.
Important: Do not insulate extension bonnets that
are provided for hot or cold services
1.2.3 Make sure that sufficient overhead clearance above
the actuator is maintained, to allow for disassembly
of plug from the valve body (see following table).
1.2.4 After installing, check direction of flow again. The di-
rection of flow is shown by the arrow on the housing.
1.2.5 If the valve is to be welded into the line, make sure
that the valve is shielded from excessive heat.
1.2.6 Connect supply pressure and signal lines. Control
valves can be supplied with a positioner. The end con-
nections for supply pressure and signal are clearly
marked. Actuator and positioner are suitable for max.
4.2 bar (60 psi) supply pressure. If the supply pres-
sure exceeds the pressure specified on the nameplate,
a pressure reducing station is required. If instrument
air is not available, install an oil separator/air filter in
the air inlet line. All connections must be leak free.
1.3 QUICK CHECK:
Before operating, check the valve as follows:
1.3.1 Open and close the valve, and observe the move-
ment of the actuator stem. The movement must be
smooth and linear.
1.3.2 Check for maximum stroke through change of sig-
nal (for pneumatic positioners, 0.2 - 1.0 bar or cor-
responding split-range values; for IP positioners, 4-
20 or 0-20 mA).
1.3.3 Check all air connections for leaks.
1.3.4 The packing gland nut must always be tightened
slightly more than finger-tight.
IMPORTANT: An excessively tightened gland nut
can cause excessive packing wear and can hinder
the free movement of the plug stem.
1.3.5 Check fail-safe position. To do this, close supply pres-
sure and observe whether the valve opens or closes
as prescribed.
1.3.6 After using at fluctuating temperatures, re-tighten all
bolt connections and check for leaks.
2 MAINTENANCE
Check valves for correct functioning at regular
intervals (at least once every 6 months) as follows.
This check can be made when installed and in many
cases without interrupting production. If internal
defects are suspected, see section on „Disassembly
and Assembly of Valve“.
2.1 Examine gaskets for leaks and if necessary re-tighten
bolts (see Fig. 1).
2.2 Check bellows gasket and test connection - if present - for
external leaks.
2.3 Check valve for damage caused by corrosive residues
or corrosive vapours.
2.4 Clean valves and if necessary repaint.
2.5 Check packing bolts for correct tightening. Gland nuts
on packing may only be tightened slightly more than
finger-tight, or only tight enough to ensure a proper
seal.
Actuator Clearance Actuator Clearance
size (mm) size (mm)
37/47 95 P2 140
38/48 140 P3 140
39/49 140 P4 140
39D/49D 140 P5 140