Petrochemical
Tillman & Associates supplies industrial and explosion-proof heaters, replacement HVAC coils and air-quality equipment for petrochemical and refining facilities. From our Houston office, we help match products to classified process areas and plant support facilities, including equipment buildings, maintenance shops, laboratories and offices.
Quoted and supported across Houston, San Antonio, Austin, Corpus Christi, Beaumont, College Station and Galveston and surrounding areas.
The right products for the job
From classified equipment buildings to maintenance shops and laboratories, the right solution depends on the space, duty and contaminants involved.
01 / Heating
Industrial space heating, freeze protection and replacement heating coils.
Explore the applications below.
Ruffneck
Ruffneck heaters for appropriately classified equipment buildings and enclosed plant spaces. Start with the required classification, gas or dust group, temperature code, heating load, voltage and ambient range.
Explore the product lineRuffneck
Heat maintenance shops, warehouses and other plant support spaces with equipment selected for the actual environment. Steam, hot-water and electric options depend on the application and available utilities.
Explore the product lineHeatcraft by Modine
Replace steam or hot-water coils in existing air handlers and make-up air systems. Review dimensions, connection locations, fluid conditions, airflow and required leaving-air temperature.
Explore the product line02 / Cooling
Replacement cooling coils for plant HVAC equipment, selected for fit, duty and corrosion exposure.
Explore the applications below.
Heatcraft by Modine
Replace chilled-water or refrigerant coils in plant HVAC equipment. Match fit and duty while reviewing corrosion exposure, materials, coating options and access for installation.
Explore the product line03 / Air quality
Target the contaminant and the space: maintenance-shop air, HVAC surface hygiene and laboratory particulate control.
Explore the applications below.
Trion
Trion air cleaners address applications such as oil and coolant mist from machining in plant maintenance shops. Select the collection method around the contaminant, airflow and process; classified or combustible applications require specific review.
Explore the product lineSteril-Aire
Steril-Aire UV-C systems help control microbial buildup on cooling coils and drain pans in suitable support-building air handlers. Review fixture placement, access and the installation environment.
Explore the product lineEnvirco
Envirco fan-filter and clean-air equipment can support particulate-sensitive laboratory and clean work applications. Select filtration and airflow around the process; clean-air equipment is not a substitute for chemical fume containment.
Explore the product lineParticulate filtration and UV-C do not remove flammable gases or establish a safe atmosphere. Product suitability, certifications and installation requirements must be confirmed for the specific application.
What makes a difference
A hazardous (classified) location is an area where flammable gases, vapors, combustible dust or ignitable fibers can create a fire or explosion hazard. Selecting HVAC equipment starts with the equipment needed and the classification assigned to its installation area.
Class I
Flammable gas or vapor
Division 2
Generally abnormal release conditions
Group D
Propane-group classification
T3B
165°C / 329°F maximum surface temperature
Illustrative designation only. Confirm the complete equipment marking and project requirements; this example does not identify a specific product approval.
Class I covers flammable gases or vapors; Class II covers combustible dust; Class III covers ignitable fibers and flyings. Petrochemical projects often involve Class I areas, but the site's classification governs selection.
Division 1 includes areas where ignitable concentrations may occur during normal operation. Division 2 generally addresses abnormal releases, equipment failures, or loss of protective ventilation. These are summaries, not a substitute for the project's classification drawings.
Gas Groups A, B, C and D distinguish materials with different ignition and explosion characteristics. Examples include acetylene, hydrogen, ethylene and propane, respectively. Confirm the actual group: an explosion-proof label alone does not establish suitability.
The equipment's marked temperature code limits its maximum surface temperature under specified conditions. Match it to the material's ignition characteristics and the required ambient range. T3B, for example, corresponds to 165°C (329°F).
Salt air, chemical exposure, washdown, outdoor weather, vibration and temperature extremes affect materials and equipment selection. Explosion-proof, corrosion-resistant and weather-resistant describe different requirements.
Some projects use a Zone classification system. Send that designation as specified rather than assuming a direct Division-to-Zone conversion. Area classification is established by the project's qualified design team and applicable authority; we help review equipment against those requirements.
Equipment selection and any hazardous-location approvals are specific to the model, configuration and installation.
Industrial and explosion-proof unit heaters selected for the required heating duty and environment.
Replacement heating and cooling coils matched to existing equipment, operating duty and corrosion exposure.
Custom air handling equipment. See our Companies Represented page for manufacturer information.
For suitable shops, support-building HVAC and clean work areas. Do not assume these products carry hazardous-location approval.
Send the required equipment type, heating load or room conditions, classification, gas or dust group, temperature code, ambient range and electrical supply. Include the project specification and existing nameplate when replacing a unit.
No. Hazardous-location protection, corrosion resistance and enclosure protection address different conditions. Each must be reviewed against the actual installation.
We can review replacement coils from Heatcraft by Modine. Send dimensions, connection details, photographs or drawings, airflow and fluid or refrigerant conditions so fit and performance can be evaluated.
Maintenance-shop smoke and mist may call for industrial collection equipment; particulate-sensitive laboratory work may call for HEPA/ULPA filtration. HVAC UV-C addresses microbial control. None of these functions alone establishes flammable-gas removal or hazardous-location approval.
Tell us what equipment you need and the hazardous environment requirements, and we’ll match the right products to deliver the right solutions.
Include the project location, equipment duty or capacity, available utilities and any required classification, group and temperature code. Drawings, specifications and existing nameplates help us get started.
Send your project details
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