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The WellMark Series
685I, 685S, and 685M
Major style Liquid
head pressure type level indicator (up to 7
independent switches). It continuously indicates the
liquid level in an atmospheric (vented) tank in feet
and inches. Available for calibration for horizontal
cylindrical vessels or in pounds, gallons, barrels,
percent, etc. |
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The WellMark Series
685E
Major Style electro-mechanical
level control device, which accomplishes three (3)
main functions. These are remote indication, local
liquid level indication, and hi-low adjustable
switch outputs. The unit continuously indicates the
liquid level and transmits a proportional signal.
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ELECTRIC CONTROLS
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The WellMark Series 790
Major Style
side-mounted liquid level control which works on
positive magnetic repulsion to complete and
electrical circuit to pump, valve, alarm or other
device, when the liquid level in the vessel rises
(or lowers) to a predetermined point. |
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The WellMark Series 683, 686,
687 Major Style
Floatswitch which is a float type of control that
completes an electrical circuit to a pump, valve,
alarm or other device, when the liquid level in the
vessel rises (or lowers) to a predetermined point --
2 psi (atmospheric) to 1440 psi. |
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The WellMark Series 688
Major Style single
point on/off level switch, which completes an
electrical circuit to a pump, valve, alarm or other
devise. This unit senses virtually any liquid and
does not need adjustment when the vessel contents
are changed. It will ignore foam, surge or splash to
indicate true liquid level, with repeatability to
0.050 in. standard. |
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The WellMark Series 710, 720,
730, & 740
Major Style float-operated units designed for
external mounting to the process vessel and provide
high pressure capabilities with low specific gravity
ratings within the petroleum, power and natural gas
industries. These models provide reliable magnetic
switching for level alarm or control function
applications.
CSA APPROVED
Class I, Division I, Groups C & D
Class II, Groups E, F & G
Class III, Enclosure Type 4 |
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The WellMark Series 770
Major Style
side-mounted float operated liquid Level Switch to
magnetically actuate an externally located
electrical switch, eliminating conventional seals.--Contact
Factory for Details |
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The WellMark Series 780
Major Style
Hermetically Sealed Level Control, side-mounted
float type liquid level control. This unit is used
as a high or low level control. Also can be used to
sound alarms or operate control equipment.
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The WellMark Series 810
Major Style
Hermetically Sealed Level Control is a vertical
mounted switch used to monitor "flow vs. no-flow".
Its purpose is to operate valves, alarms, control
pumps or any other electrical function.
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The WellMark Series W861
WellMark Style
Hermetically Sealed Level Control is a side mounted
float type liquid level control. This unit is used
as a high or low level control. Also can be used to
sound alarms or operate control equipment.
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PNEUMATIC CONTROLS
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The WellMark Series 2001NB
Cemco Style
liquid level control, designed with a Die Cast
Aluminum control box, provides a rugged and
versatile unit that is ideal for use on compressor
scrubbers, separators and any production or process
units that require liquid level control. Its
proportional band and spring balanced displacement
element allows for a wide range of adjustability for
a variety of liquid level control requirements.
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The WellMark Series 1085
WellMark Style
Pneumatic Level Control is used to maintain a
pre-selected fluid level in a vessel. When the
rising level compares with the pre-selected level:
1. The displacer's movement actuates the control's
pneumatic pilot valve;
2. The pneumatic pilot valve directs operating
pressure to a control valve;
3. Operating pressure opens and closes or throttles
the control valve as necessary to maintain the
pre-selected fluid level.
Other controls have these operational
characteristics, however none share all the noted
WellMark standard features. |
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The WellMark Series 7400
WellMark Style "Snaptrol" (also known as the Cemco
Style LLC) for use in low-pressure vessels or tanks,
this versatile and multi optional device can be used
as a level control or as a component of Hi-Lo level
alarm systems. The 1" NPTM unit may be mounted into
a 1" coupling when the float is accessible from
inside the vessel. If float is not accessible, a 2"
or larger connection must be provided to allow
passage of the float through the connection. The
pneumatic 3-way 2-port no-bleed pilot valve makes
this unit an excellent choice for the control of
liquid level in oil and gas production equipment
such as separators, dehydrators, treaters, as well
as in manufacturing plants, hazardous waste
disposal, food processing, petro-chemical
facilities, or wherever fluid levels need to be
monitored or controlled. |
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The WellMark Series 1800
The WellMark
1800 Liquid Level Control offers design simplicity,
easy installation, adjustment, and reliable
liquid-level monitoring. The Model 1800 can be
equipped with a snap action 3-way 2-port valve
(1800M) and an electrical contact switch (1800E).
The Model 1800 is actuated by movable arms that
permit the control range to be adjusted easily and
accurately set to the range desired. With the liquid
level below the float, the 3-way 2-port valve, or
micro switch, will be in low level position and will
remain there until the float rises to the pre-set
high level.The 3-way 2-port valve, or micro switch,
reverses positions as the float rises or drops
through the pre-set level.
The 1800 Liquid Level Control can be used in oil and
gas processing, manufacturing plants, hazardous
waste disposal, food processing, petro-chemical
facilities, or wherever fluid levels need to be
monitored or controlled. |
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The WellMark Series 6900
Cemco Style
Cantilever liquid level controls offer design
simplicity, easy installation, adjustment, and
reliable liquid level monitoring. It is a highly
efficient device for the control of liquid level in
oil and gas production equipment such as:
separators, dehydrators, and treaters, as well as in
manufacturing plants, hazardous waste disposal, food
processing, water treatment, petro-chemical
facilities, or wherever fluid levels need to be
monitored or controlled. The sensing element design,
with no moving parts exposed to the tank or vessel
fluid, makes the simple installation of the control
possible in various standard pipe closures such as:
ANSI flanges and grooved, or union, connections. |
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The WellMark Series 6900
WellMark Style Flexlever liquid level controls offer
design simplicity, easy installation, adjustment,
and reliable liquid level monitoring. It is a highly
efficient device for the control of liquid level in
oil and gas production equipment such as:
separators, dehydrators, and treaters, as well as in
manufacturing plants, hazardous waste disposal, food
processing, water treatment, petro-chemical
facilities, or wherever fluid levels need to be
monitored or controlled. The sensing element design,
with no moving parts exposed to the tank or vessel
fluid, makes the simple installation of the control
possible in various standard pipe closures such as:
ANSI flanges and grooved, or union, connections. |
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The WellMark Series PT988
WellMark Style
Pneumatic Level Switch is designed for horizontal
mounting in a tank or vessel through threaded or
flanged pipe connections (will work in an API 2"
full coupling) and is excellent for applications
where space is a factor. It can be externally caged
for vessel isolation and can be used as a high or
low level alarm, as well as a liquid level control.
In addition, it can be switched from direct to
indirect action simply by inverting the unit 180°.
The PT988 features a 3-way snap-acting pilot (0 to
full output using 20-30 psi supply pressure) or
order it with an optional throttling pilot (3 to 15
psi output with a 20 psi supply pressure). |
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TheWellMark Series 9321
WellMark Style On-Off
Pneumatic Liquid Level Switch operates shut-down
valves or alarm systems when liquid in a vessel
reaches a predetermined level. This switch uses an
externally mounted displacer that operates a
nozzle-flapper to vent the supply pressure when the
switch is activated. The nozzle-flapper has a soft
seat for tight shut-off when the switch is in its
normal position (flapper against the nozzle).
The Series 9321E is an external cage-mounted
electric liquid level switch. Rising liquid exerts a
buoyant force on the displacer, producing a torque
in the tube. This force will either trip or reset an
electrical switch. Falling liquid will trip or reset
the same switch if so desired. The WellMark Series
9321E Electric Switch uses the displacer and torque
tube movement to trip and reset an electric switch
for on-off condition. The displacer can withstand up
to 11/2 times the maximum working pressure, allowing
it to remain in the cage during hydrostatic testing. |
RELIEF VALVES |
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The WellMark Series 9500
Safety Relief Valve
These valves are for general
purpose gas and air services, and are recommended
for over-pressure protection on separators,
compressors, pressure vessels, heater-treaters,
gathering and transmission lines, meter runs, and
other systems where the rated capacities of the
valve are commensurate with the requirements of the
system. All of these valves are manufactured in
accordance with the ASME Boiler and Pressure Vessel
Code and have been capacity tested and certified by
the National Board to meet the requirements of
Section VIII of the ASME Code, as signified
accordingly by the symbols “UV” and “NB” on their
nameplates. |
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The WellMark Series W1392V
Vapor Relief Valve
This WellMark Relief Valve is for the control of
vapor emissions. It can be used on glycol dehydrator
reboilers to meet EPA standards, or any situation
where pressure in ounces is to be controlled. |
REGULATORS |
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The WellMark Series W7702 Back
Pressure Regulator
This Back Pressure Regulator
is an excellent and economical device for automatic
relief of pressure in liquid service. It is actuated
by the static upstream pressure, which causes the
valve to open at set pressures. The degree of
opening will vary and increase in proportion to the
increase in pressure over the opening pressure. The
WellMark Back Pressure Regulator is offered in a 2”
size. The 2” is suitable for pressure settings up to
1500 psi. |
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The WellMark Series 2001PR
"Top Gun" Pressure Regulator
In the tradition of providing
the best of the best,WellMark has developed the “Top
Gun” Series 2001PR for accurate reduction of high
pressure gas before it enters the distribution
system. It is designed for inlet pressures up to
1500 psi and outlet pressures from 27 to 500 psi.
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The WellMark Series 2002PR
"Mighty Gun" Pressure Regulator
This self-contained
pressure-reducing regulator is designed for
flexibility and is for low- and high-pressure
systems. It can be used with natural gas, air, or
other gases. It is primarily used to regulate
pressure and volume to fuel gas valves or production
instrumentation on oil and gas process equipment. |
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The WellMark Series 2003PR
"Mini Gun" Pressure Regulator
The “Mini Gun” Series 2003PR
regulators are standard equipment for pneumatic
liquid level controls and valve positioners; in
addition, they can be used for general purpose
control of gas or air to other pneumatic
instruments. |
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The WellMark Series 2004PR
"Mega Gun" Pressure Regulator
The “Mega Gun” Series 2004PR
regulators are applicable for effective reduction of
high-pressure gas to operate controllers, valve
actuators, and chemical injection pumps as well as
to supply fuel gas to pilot operated fire tubes on
various production equipment. |
CHEMICAL PUMPS |
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The WellMark Series CIP
Chemical Injection Pump The
Series CIP is a positive displacement pump used to
inject chemicals into a line under pressure.
Applications include injection of chemical into
wellheads, pipelines, or batch process
manufacturing. Examples include injecting: methanol
into gas systems to prevent freezing; corrosion
inhibitors, friction reducers, or scale inhibitors
into pipelines; a liquid into a batch process as a
chemical additive, or catalyst for produced product.
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DIAPHRAGM TWO-WAY VALVES
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The WellMark Series 1010
WellMark Style
control used as a fuel gas control valve to feed the
pilot on heated separators, treaters, and other
similar liquid accumulators, as well as a low
pressure, low volume dump valve on oil and gas
production separators, compressors, or any type of
liquid accumulator. |
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The WellMark Series 3030
Cemco Style
valve ideally suited for on/off or modulating
control of liquid, oil, or gas on low pressure
applications for use on oil and gas production
separators, heater treaters, compressors, or any
type of liquid accumulator. |
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The WellMark Series 2001NF
WellMark Style
valve, with its rugged design, is used for on/off
control of high pressure water, oil, or gas.
Compressor scrubbers, oil and gas separators, or any
liquid accumulators are a few suitable applications.
The valve trim on this valve is designed to be
constantly immersed in the vessel fluid so as to
utilize the warmth of the process to help prevent
freezing. |
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The WellMark Series 2001TF
Cemco Style
valve used for control of liquid, oil, or gas.
typical installations include compressor scrubbers,
oil and gas separators, dehydrators, and various
liquid accumulators. It is installed directly into
the vessel so that the inner valve components may be
warmed by the process fluid, which will prevent or
inhibit freezing due to pressure differential or
outside environment. |
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The WellMark Series 4040
K-Trim Valve
Cemco Style valve, an industry standard, has long
been used for control of liquid, oil, or gas on high
pressure applications. Gas production separators,
gas scrubbers, or any type liquid accumulators are
just a few typical applications for this valve. |
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The WellMark Series 4050
N-Trim Valve
Cemco Style valve with a diverse application for use
as a dump valve in high-pressure scrubbers,
separators, and other liquid accumulators. |
DIAPHRAGM DOUBLE SEATED (BALANCED) VALVES
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The WellMark Series 5050
WellMark Style
valves used where higher flow is desired with little
force required to operate. These pilot operated
double seated, near balanced, valves perform ideally
for this service. Additionally, they have been used
successfully on separators, meters, and water
knockouts, where a reduced signal pressure is
available. |
DIAPHRAGM BACK PRESSURE VALVES
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The WellMark Series 3535
Cemco Style
Back Pressure Valve can be used in any installation
where upstream pressure is required to be kept at a
preset range. It may also be used as: a pressure
relief valve, a custody transfer dump valve to hold
a certain back pressure, or as a separator back
pressure valve on the gas or liquid side. Upstream
pressure is applied to the bottom of the diaphragm
through connecting tubing. Spring tension above the
diaphragm opposes this pressure, and when the
pressure exceeds the pressure setting on the spring,
the plug is raised off the seat. By varying the
spring tension, the pressure setting can be varied.
The typical application for these valves is to hold
back pressure on separators, treaters, Lact units,
etc. |
DIAPHRAGM DOUBLE SEATED (BALANCED) BACK PRESSURE
VALVES |
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The WellMark Series 5555
Cemco Style
unique valve, with its simple and near-balanced
double-seated design, along with its history of
trouble free operation, has contributed materially
to its wide acceptance in the oil industry.
It's primary
application is to hold back pressure on separators,
treaters, Lact units, and other accumulators when
upstream pressure is required to be kept at a preset
range. However, this valve may also be used as a
differential valve by utilizing secondary signal
pressure, along with spring force on top of the
diaphragm, to oppose flow pressure applied to the
bottom of the diaphragm.. |
THROTTLING / CHOKE VALVES
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The WellMark Series 2020
WellMark Style
versatile and proven valve is ideal for use in well
head control, in gas gathering systems to regulate
flow, for CO2 and water steam injection systems as
well as pressure separators. Suitable water, gas and
other liquid service. |
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The WellMark Series 2021
Cemco Style
Throttling Valve is designed to function as a
pressure control valve, and will handle pressure
drops up to 4500 psi liquid and 2200 psi gas. It has
been used widely in gas gathering systems to
regulate flow, CO2, and steam injection systems, as
well as in low, medium, and high-pressure
separators. |
FLOAT NOSE / LEVER OPERATED VALVES
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The WellMark Series 1850
Cemco Style
Float Nose is an inexpensive mechanical lever
control that provides convenient vessel access. The
7" x 12" float provides sufficient lift torque to
operate WellMark’s near-balanced 1250 Series lever
valve as well as other industry balanced valves. The
float nose is widely used as an oil or water dump
control on separators, water knockouts, horizontal
emulsion treaters, and other similar accumulators. |
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The WellMark Series 1250
Cemco Style
lever operated “dump” valve is used in conjunction
with a float nose to dump oil or water from
separators, knockouts, treaters, and other
accumulators. |
CHECK VALVES |
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The WellMark Series EC
Cemco Style Economy
(EC) Wafer Check Valve is a space-saving,
reduced-port check valve that can be easily
installed between standard ANSI butt-weld flanges.
Available in 2", 3", 4" and 6" sizes and ANSI
Classes 150, 300, 600 and 900. The valve is designed
for water, oil, and gas applications which include
gathering systems, water flooding, meter runs, as
well as other applications where a check valve is
needed.
NOTE: As this valve is a reduced port swing-check
design, it is not suitable (1) for lines that will
be "pigged" or cleaned by spheres, (2) when
positioned immediately on the discharge of positive
displacement pumps, (3) where line fluid velocities
through the valve port exceed 16 FPS in liquids, or
300 SCFPS in gasses, (4) where slip-on flanges are
used on the downstream side as the "clapper" is
retained by the companion flange face. |
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The WellMark Series KB
Cemco Style KB Ball
Check Valve is an in-line valve, which stops the
flow from downstream when downstream pressure is
higher than the upstream pressure –which could be
detrimental to any upstream equipment. These valves
are suitable for waterflood injection. |
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The WellMark Series WTA
WellMark Style In-Line
Check Valve is for liquid, air, gas, vapor, steam,
or cryogenic service. It is also suitable for
injection lines, such as chemical and lubrication.
The standard spring opens with 10 psi flow pressure. |
LINE BLINDS |
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The WellMark Series LB
Cemco Style Line
Blinds are used when there is a requirement or need
for two distinctly different fluids to flow through
a common line at different times. The most common
use is to keep water and carbon dioxide (CO2)
separate in an injection system. This product is
also used in the marine industry, power generating
plants, natural gas plants, and liquid storage
terminals. |
ACCESSORIES |
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The WellMark Series MLS
Cemco Style Meter
Level Saddle is an accepted means to support chart
recorders on meter runs or as an economical means to
support pipe runs.
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Sizes: 2", 3", 4", 6", 8"
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Material: Ductile Iron
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The WellMark Series FGSV
WellMark Style
Fuel Gas Shut-Off Valve is for use in fuel gas
scrubbers on gas production units, indirect line
heaters, heater treaters, etc. |
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The WellMark Series ITT WellMark Style
in-line device installed between a safety relief
valve and a pressure vessel for in-field testing of
pressure settings and/or seat leakage. |
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The WellMark Series Probes &
Plugs WellMark
Style accessory for fast, on-location, pressure
checks. Use on wellheads, on flow lines and on
pressure vessels, or wherever repetitive pressure
readings are taken. |
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The WellMark Series LevelGlas
WellMark Style
accessory for use with in-line level control
connections in order to show visual liquid level
over a small area, or wherever small area visual
sight of liquid is required. |
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The WellMark Series STR
Cemco Style In-Line
Strainer, rugged in design, it is built for complete
protection of mechanical equipment from the
injurious effects of dirt, scale, welding slag, or
other foreign matter. It is used on various types of
equipment such as separators, heater-treaters, or
compressors for in-line purification of gas lines. |
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The WellMark Series Blind
Flange Assemblies (Closures) and Weld Necks
are engineered for high/low
pressure vessels. Both straight and acme threads
with steel hammer nuts are available with optional
flanges for clean out and level control
instrumentation.
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Sizes: 3", 4", 5", 6", 8"
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Schedule: 80, 100, 120,
160, XXH
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Materials: ASTM A106 GR-B,
A126 WCB, A108, 1018
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The
CEMCO CO2 Injection Skid Components include Line
Blinds, Flanges, Spools, Tees, Strainers, and
Controls to provide a complete package for CO2
injection systems that are custom engineered to fit
any application. Designs up to ANSI 1500 class,
available in 316 S.S. or Carbon Steel RF and RTJ
threaded socket or butt weld flanges. May be used on
steam injection, salt water disposal and water
floods. |
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