Pump and Fluid Systems
Chapter 6: Glossary
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MP-16 2-Piece 5000 psi January 2013
Shim:
A thin and often tapered or wedged piece
of metal, used to ensure components remain
properly aligned.
Snap Ring:
An oblong metal ring which can be
deformed and put into place, at which point it will
snap back to its unstressed position in a groove
or retainer.
Sour gas:
See Hydrogen Sulfide.
Spring Retainer:
The part of the Valve Assembly
which guides and controls the movement of the
spring.
Stop:
A device that obstructs movement.
Strainer Cross:
A discharge cross containing a
strainer screen to remove debris from the pump
discharge.
Suction Depulser:
See Suction, Stabilizer.
Suction Line:
The piping which carries fluid into
the suction manifold. Also known as Suction
Piping.
Suction Manifold:
See Manifold, Suction.
Suction Module:
The portion of a multi-part fluid
cylinder which accepts fluid into the pump.
Suction Piping:
See Suction Line
Suction Stabilizer:
A low-pressure pulsation
dampener mounted in the suction piping.
Suction Valve:
A valve assembly located in the
fluid cylinder, designed to channel fluid from the
suction manifold to the fluid cylinder and prevent
return flow.
Sump:
A reservoir of oil, usually located in the
crankcase.
Teflon Tape:
A film cut to specified widths for use
in sealing pipe threads.
Thread Compound:
A paste for pipe joint threads
that holds the pipes in place and prevents
corrosion.
Tie Wire:
A fine wire that is twisted around a
bracket to keep the fastener from loosening.
Torque:
A measure of twisting force, usually
indicated in terms of foot-pounds.
Triplex Pump:
See Pump, Triplex.
Valve:
A structure which regulates the flow of fluid
through a system by opening and closing under
set conditions.
Valve Assembly:
A configuration of parts
including, but not limited to, the valve itself, a
seat, spring, and spring retainer, all in normal
operating positions relative to each other.
Valve Cover:
The cover which holds the valve in
place in the fluid cylinder.
Valve Cover Seal:
The seal around the valve
cover.
Valve Puller Assembly:
See Seat Puller
Valve Seat:
A surface against which a valve may
rest in order to seal the aperture.
Valve Seat Puller:
See Seat Puller.
Valve Stem Guide:
A channel which supports the
stem of a valve for maintenance of alignment.
Valve, Bypass:
A specialized pressure relief
valve hooked to the bypass line.
Valve, Discharge:
The valve assembly through
which fluid exits the pump into the discharge
manifold.
Valve, Line:
A valve designed to control flow
through the piping.
Valve, Pressure Relief:
A valve designed vent
excess pressure from the system by opening at
a set pressure value.
Valve, Shut-Off:
A valve designed to completely
stop the flow of fluid.
Valve, Suction:
The valve assembly through
which fluid enters the pump from the suction
manifold.
V-Belt:
A belt designed with a “V” shape to mate
with a tracking groove in the sheave in order to
enhance traction and prevent the belt from
unintentionally slipping off.
V-Belt Drive:
See Drive, V-Belt.
Vent:
A system in the piping designed to remove
aeration from the fluid.
Wear Plate:
A component used to reduce wear
and add support.