11
KEYSTONE
FIGURE PCS17 KNIFE GATE VALVES
INSTRUCTION, OPERATION AND MAINTENANCE MANUAL
HANDWHEEL OR BEVEL GEAR OPERATED
VALVES
A. Equipment orientation: Valves may be
stored in the vertical or horizontal position.
B. Preparation for storage: Valves may be stored
as shipped, provided the above storage facility
and equipment orientation instructions above
are followed. If valve packaging is altered or
removed for receiving inspection, repackage
valve as originally received.
C. Storage inspection: Visual inspection shall
be performed on a semiannual basis and
results recorded. Inspection as a minimum
shall include reviewing the following:
Packaging
Flange covers
Dryness
Cleanliness
D. Maintenance: Maintenance shall consist
of correcting deficiencies noted during
inspection. All maintenance shall be
recorded. Contact factory prior to
performing any maintenance if valve is still
covered under warranty.
CYLINDER OPERATED VALVES
A. Equipment orientation: The preferred
orientation for optimum protection is with
the valve fully opened and the cylinder in the
vertical position. This position gives the best
support to the cylinder rod and helps reduces
the chance of a “flat spot” developing on
the cylinder seals. An acceptable alternate
position for valves with cylinder diameters of
less than 150 mm (6") is with the cylinder in
the horizontal position.
B. Preparation for storage: Valves may be stored
as shipped, provided the above storage facility
and equipment orientation instructions above
are followed. If valve packaging is altered or
removed for receiving inspection, repackage
valve as originally received.
C. Cylinder storage: These cylinder storage
instructions are not intended to replace
the instructions of the specific cylinder
manufacturer and are to be used as a guide
only. If specific instructions are required,
please contact our office. For storage of
up to 3 years; Squirt a high quality grade of
hydraulic oil or synthetic lubricant into the
cylinder ports and operate cylinder 6-12 times
on a yearly basis. For storage 3-5 years;
Lubricate as above. Additionally, extend
cylinder rod until the valve is fully closed. Coat
cylinder rod with high quality heavy grease or
synthetic lubricant. Retract cylinder rod until
valve is fully open, drawing lubricant into rod
end of cylinder. Securely plug cylinder ports
with pipe plugs, if cylinder is not prepiped to
control accessories. If cylinder is prepiped to
accessories, plug all input and output ports of
accessories.
D. Storage inspection: Visual inspection shall
be performed on a semiannual basis and
results recorded. Inspection as a minimum
shall include reviewing the following:
- Packaging
- Flange covers
- Dryness
- Cleanliness
E. Maintenance: Maintenance shall consist
of correcting deficiencies noted during
inspection. All maintenance shall be
recorded. Contact factory prior to
performing any maintenance if valve is still
covered under warranty.
