Refining
The refining industry has looked to Clark-Reliance for decades for the most extensive product line in level measurement and control. Our Jerguson® level gage offerings are the world’s broadest.
Despite our wide variety of offerings, all Clark-Reliance products share a critical commonality: unmatched reliability. This reliability is essential to ensuring the safe, efficient, and continuous operation of your most critical applications.

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Refining Applications
Alkylation
Alkylation, in petroleum refining, is a chemical process in which light, gaseous hydrocarbons are combined to produce high-octane components of gasoline. The light hydrocarbons consist of olefins such as propylene and butylene and isoparaffins such as isobutane. These compounds are fed into a reactor, where, under the influence of a sulfuric-acid or hydrofluoric-acid catalyst, they combine to form a mixture of heavier hydrocarbons.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jacoby-Tarbox Sight Flow Indicators
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Jacoby-Tarbox Sight Windows
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Jacoby-Tarbox Phaeton XTL Lighting
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Anderson AVS and AVGS Vane Separators
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Anderson AVB Steam Drum Vane Separators
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Anderson ACF Coalescing Filters
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Jerguson Glass Level Gages
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Jerguson Magnetic Level Gages
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Jerguson Model MGWR Gages
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Jerguson External Cage Level Switches
Atmospheric Distillation
Atmospheric Distillation is the most basic petroleum refining process. Crude oil is heated and fed into a large tower containing a vertical series of complex trays. As the lighter hydrocarbon components boil out of the crude and their vapors rise in the tower and cool, they collect in trays at different levels based on the critical temperature of each different fluid. For example, the heavier oils and straight-run gasolines will condense into liquid at a lower level (and higher temperature) than butane, propane, and other light end gases.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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Jerguson Magnetic Level Gages
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Jerguson External Cage Level Switches
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Anderson AVB Steam Drum Vane Separators
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Anderson AVS and AVGS Vane Separators
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Anderson ACF Coalescing Filters
Dehydrogenation
Dehydrogenation involves the elimination of hydrogen from a compound to produce a less saturated analog chain and can be effected thermally or catalytically. Thermal dehydrogenation is best exemplified by the pyrolysis of hydrocarbons to produce olefins, usually in the presence of steam, in pyrolysis furnaces or steam crackers at elevated temperatures.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Gas Filters and Coalescing Elements
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Liquid Filters
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Anderson AVB Steam Drum Vane Separators
Fluid Catalytic Cracker (FCC)
Fluid Catalytic Cracking converts heavy oils into higher value gasoline and lighter products by cracking heavy oil feed in the presence of a fine particle catalyst. The term “fluid” is used because the catalyst is very fine particles, which behave as a fluid when aerated with a vapor
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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Jerguson Magnetic Level Gages
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Jerguson External Cage Level Switches
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Anderson ACF Coalescing Filters
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Anderson AVS and AVGS Vane Separators
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Anderson AVB Steam Drum Vane Separators
Gas Processing
Gas Processing is a general term referring to the separation and treatment of gas into various higher value products and the removal and treatment of water and other undesirable or toxic components.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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Jerguson Magnetic Level Transmitters
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Jerguson External Cage Level Switches
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Liquid Filters
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Gas Filters and Coalescing Elements
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Anderson AVS and AVGS Vane Separators
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Anderson ACF Coalescing Filters
Hydrotreater
Hydrotreating is a process in which contaminants are removed from product streams to produce either finished product or clean product for further processing. The process employs pressure and temperature, however the temperature is generally kept below 800°F to minimize cracking.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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Jerguson Magnetic Level Gages
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Jerguson External Cage Level Switches
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Jacoby-Tarbox Sight Windows
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Jacoby-Tarbox Eductors
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Jacoby-Tarbox Sight Flow Indicators
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Jacoby-Tarbox Phaeton XTL Lighting
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Anderson ACF Coalescing Filters
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Liquid Filters
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Gas Filters and Coalescing Elements
Hydrogen Synthesis
Hydrogen Synthesis units produce hydrogen for use in treating and cracking process units. The hydrogen process typically involves the steam reforming of light end gases such as methane. The process typically involves four stages: reforming, conversion, purification, and methanation.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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Jerguson Magnetic Level Gages
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Jerguson External Cage Level Switches
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Anderson ACF Coalescing Filters
Merox Treater
Merox Treatment is a process in which mercaptan sulfur is removed from gas streams by contact-reacting feed with a caustic solution.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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Jerguson Magnetic Level Gages
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Jerguson External Cage Level Switches
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Liquid Filters
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Gas Filters and Coalescing Elements
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Jacoby-Tarbox Sight Windows
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Jacoby-Tarbox Eductors
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Jacoby-Tarbox Sight Flow Indicators
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Jacoby-Tarbox Phaeton XTL Lighting
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Anderson ACF Coalescing Filters
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Anderson AVB Steam Drum Vane Separators
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Anderson AVS and AVGS Vane Separators
Power Boiler
Power Boilers are used to generate the steam required for plant processes or for the generation of electricity for use in the facility. These Power Boilers are generally designed and manufactured to meet the requirements of the ASME Boiler Code or applicable Boiler Code for the country of installation.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Reliance Electro Eye-Hye Remote Drum Level Indication Systems
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Reliance Water Columns
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Reliance Levalarms
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Reliance Water Gage Glasses
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Anderson AVS and AVGS Vane Separators
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Anderson AVB Steam Drum Vane Separators
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Anderson ACF Coalescing Filters
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Jerguson Magnetic Level Gages
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Jerguson External Cage Level Switches
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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OFS Fuel Coalescers
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OFS Vacuum Dehydration Oil Purification Systems
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OFS Filter Carts and Low Flow Filtration Systems
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OFS Rental Equipment
Amine Treating
Amine Treatment removes hydrogen sulfide and carbon dioxide from natural gas. Amines have a high affinity for both hydrogen sulfide and carbon dioxide, making this a very effective removal solution.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jerguson Glass Level Gages
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Jerguson Magnetic Level Gages
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Jerguson Model MGWR Gages
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Jerguson Cage Level Switches
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Anderson AVS and AVGS Vane Separators
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Anderson AVB Steam Drum Vane Separators
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Anderson ACF Coalescing Filters
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Liquid Filters
Catalytic Reformer
Catalytic Reforming is a process in which heavy-run gasolines and naptha are reacted in the presence of catalysts to produce higher-octane gasolines. Catalytic Reforming rearranges the molecular structure of the hydrocarbon chain rather than cracking it as in other processes.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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Jerguson Magnetic Level Gages
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Jerguson External Cage Level Switches
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Anderson ACF Coalescing Filters
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Anderson AVS and AVGS Vane Separators
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Jacoby-Tarbox Sight Windows
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Jacoby-Tarbox Eductors
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Jacoby-Tarbox Sight Flow Indicators
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Jacoby-Tarbox Phaeton XTL Lighting
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Gas Filters and Coalescing Elements
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Liquid Filters
FCC Feed Hydrotreater
FCC Hydrotreating is a chemical process to stabilize petroleum products in the presence of hydrogen and a catalyst. Also see Hydrotreater.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jacoby-Tarbox Sight Flow Indicators
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Jacoby-Tarbox Phaeton XTL Lighting
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Jacoby-Tarbox Sight Windows
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Jerguson Glass Level Gages
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Jerguson Magnetic Level Gages
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Jerguson Model MGWR Gages
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Jerguson External Cage Level Switches
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Anderson AVS and AVGS Vane Separators
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Anderson ACF Coalescing Filters
Gas Treating
Gas Treating is a general term referring to removing unwanted or harmful substances from gas streams. See Amine Treating for one such process.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Gas Filters and Coalescing Elements
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Liquid Filters
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Jerguson Glass Level Gages
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Anderson ACF Coalescing Filters
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Anderson AVS and AVGS Vane Separators
Gasoline Blending Pool
The Gasoline Blending Pool is where intermediate streams are combined to form a variety of on-demand finished products. The advantage of the blending pool is that product output can be easily varied based on fluctuating demand.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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Jerguson Magnetic Level Gages
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Jerguson External Cage Level Switches
Hydrocracker
Hydrocracking is a process combining catalytic cracking and hydrogenation, wherein heavier feedstocks are cracked in the presence of hydrogen to produce more desirable products. The process employs high pressure, high temperature, a catalyst, and hydrogen. Hydrocracking is used for feedstocks that are difficult to process by either catalytic cracking or reforming.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Liquid Filters
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Gas Filters and Coalescing Elements
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Anderson AFC Coalescing Filters
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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Jerguson Magnetic Level Gages
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Jerguson External Cage Level Switches
Isomerization Plant
Isomerization is the chemical process by which a compound is transformed into any of its isomeric forms, i.e., forms with the same chemical composition but with different structures or configurations and, hence, generally with different physical and chemical properties. An example is the conversion of butane, a hydrocarbon with four carbon atoms joined in a straight chain, to its branched-chain isomer, isobutane, by heating the butane to 100°C or higher in the presence of a catalyst.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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Jerguson Magnetic Level Gages
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Jerguson External Cage Level Switches
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Anderson ACF Coalescing Filters
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Jacoby-Tarbox Sight Windows
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Jacoby-Tarbox Eductors
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Jacoby-Tarbox Sight Flow Indicators
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Jacoby-Tarbox Phaeton XTL Lighting
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Liquid Filters
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Gas Filters and Coalescing Elements
Sulfurization Plant
Sulfur recovery processes are used to strip elemental sulfur from toxic Hydrogen Sulfide gas.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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Jerguson Magnetic Level Gages
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Jerguson External Cage Level Switches
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Anderson AVS and AVGS Vane Separators
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Anderson AVB Steam Drum Vane Separators
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Anderson ACF Coalescing Filters
Vacuum Distillation
Vacuum Distillation is the same process as Atmospheric Distillation except that the tower is under vacuum so that higher temperatures can be achieved to boil the heavy crude that passes through the Atmospheric Distillation process.
CLARK-RELIANCE PRODUCTS EMPLOYED:
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Jerguson Glass Level Gages
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Jerguson Model MGWR Gages
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Jerguson Magnetic Level Gages
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Jerguson External Cage Level Switches
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Liquid Filters
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Gas Filters and Coalescing Elements
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Jacoby-Tarbox Sight Windows
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Jacoby-Tarbox Eductors
-
Jacoby-Tarbox Sight Flow Indicators
-
Jacoby-Tarbox Phaeton XTL Lighting
-
Anderson ACF Coalescing Filters
-
Anderson AVB Steam Drum Vane Separators
-
Anderson AVS and AVGS Vane Separators