Warren Controls 5800 Series Compact Globe Control Valves - Manual (Page 11)

11 Series 5800 5800_IOM_RevB_0413
Series 5800 Compact globe Control Valves are for the most
part maintenance free when properly selected and installed.
Rebuilding of these valves should not be necessary under
normal operating conditions. For best operation follow instal-
lation guidelines (See Installation section); maintain the fluid
pressure, temperature, flow, flowing differential pressure, and
shut-off differential pressure within the limits of the valve (See
Series 5800 Product Specification for details). In installations
where high vibration exists, pneumatic and/or electrical con-
nections should periodically be checked for integrity. In water
or water and glycol applications, good water quality must be
maintained or the service life of the valve may be reduced (See Water Quality Guidelines). The valve stem must be kept
free of debris, deposits, dirt, dust, and scratches or the pack-
ing parts may be damaged resulting in a packing leak. Control
valve hunting will cause excessive stroking of the valve stem
and result in premature failure of the packing seal. The system
must be stabilized to prevent hunting to ensure reasonable
packing life and optimal control performance. Oversizing of
a control valve will result in an unstable condition, which can
cause noise, vibration, and premature trim and packing seal
failure. The use of Warren Controls ValveWorks sizing program
will facilitate the selection of the optimum valve.
MAINTENANCE
PACkINg ADjUSTMENT
PArTS/ OVErhAUL
Series 5800 Compact globe Control Valves have adjustable
packing. If a packing leak is observed tighten the packing nut
¼ turn and observe. If the leak continues tighten the packing
nut another ¼ turn and observe. Repeat as necessary. If the leak continues and the packing nut cannot be tightened fur-
ther with reasonable force replace the packing and if neces-
sary the stem and plug assembly.
Damaged or worn parts can decrease performance and short-
en valve life.
Damaged or worn packing parts including the packing, bear-
ings, spring, and other bonnet parts can cause a packing leak
resulting in damage to the actuator, accessories, and sur-
rounding equipment. Damaged or worn packing parts can
also cause increased hysteresis resulting in poor control.
Damaged or worn trim parts including the plug, seat ring,
stem, cage, o-ring, piston ring, cage spring, seat gasket, and
bearing can cause increased hysteresis, poor control, excessive
internal leakage, and poor shut-off. Damaged or worn trim
parts can also cause damage to the packing parts resulting in
a packing leak
Damaged or worn body gaskets or o-ring seals can cause ex-
ternal leakage resulting in damage to the actuator, accessories,
and surrounding equipment.
Should parts become worn or damaged, parts kits are avail-
able. Repack Kits are available to replace the packing. Repack/
Inspection Kits are available to allow the valve to be opened
for inspection of its internal parts. Rebuild/Repack Kits are
available to completely rebuild/ overhaul the valve. Parts kits
come with complete step-by-step instructions. Each kit has its
own part number. Please provide the valve’s serial number to
ensure getting the correct kit part number and correct parts.
DO NOT
ATTEMPT TO SErVICE WIThOUT A
rEPACk/INSPECTION kIT & SUPPLEMENTAL INSTrUCTIONS.
!