Strainrite manufactures industrial-grade filter bags, large-diameter pleated elements, cartridges, and heavy-duty vessels engineered for the harsh operating conditions and high-throughput demands of oil and gas production, refining, and petrochemical processing. Our product line features HIGH-FLOW elements handling up to 500 GPM per filter, MADD-MAXX 7" OD elements, specialty Oil Bag/Oil Log products, and SRX "X-Tra Seal" vessels — all from our 81,000 ft² ISO 9001-certified facility.
The global oil and gas filtration system market was valued at USD 7.5 billion in 2024 and is projected to reach USD 10.9 billion by 2030 at a CAGR of 6.1%, driven by stricter environmental regulations, aging infrastructure remediation, and expansion of unconventional production. Midstream operations alone require filtration at every transfer point — from wellhead separation through pipeline transmission to refinery intake. Strainrite's catalog introduces the HIGH-FLOW large-pleat elements capable of 500 GPM per 60" filter, expanded MADD-MAXX JUNIOR (4" OD) hybrid elements for compact skid-mounted systems, and new X-tra Life and EVP extended-life filter bags for longer service intervals in high-solids environments. Combined with our proven SRHD heavy-duty vessels (up to 1,000 psi), SRX "X-Tra Seal" five-point bypass elimination design, and specialty Oil Bag/Oil Log products — Strainrite provides complete filtration solutions from wellhead to refinery.
Oil and gas operations require multi-stage filtration across upstream, midstream, and downstream processes. Each stage presents unique challenges — from abrasive particulate in produced water to trace contaminants in refined fuels. Strainrite's comprehensive filtration portfolio addresses every critical stage.
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Production fluids from wellheads contain sand, scale, formation fines, and corrosion products that damage downstream equipment and contaminate product streams. Strainrite's SRHD Heavy Duty Bag Vessels (150–1,000 psi, carbon/304/316 SS) with hermetic radial O-ring sealed retainer baskets eliminate bypass — paired with our X-tra Life POXL/PEXL extended-life bags and Enhanced Vertical Pleat (EVP/EVPA) bags for longer service intervals in high-solids service. The SRX/SRMX "X-Tra Seal" vessels feature a proprietary Five Points of Seal design for zero-bypass filtration where high-efficiency performance is critical.
Filtration is essential in the hydrotreating process to remove contaminant sources resulting from catalytic reactions and feedstock impurities.
Refineries use the hydrotreating process to remove sulfur from petrochemical feed stock through a catalytic conversion. These feed stocks are combined with hydrogen and fed into the fixed-bed catalyst hydrotreater at high temperatures and pressures. Contaminant sources include sulfide from the catalytic reaction and feedstock impurities which would significantly reduce productivity.
Strainrite's products will effectively filter out contaminants from feedstocks, lubrication oil, make-up hydrogen, desulfurized hydrocarbon and sour water sources
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Midstream pipelines, compressor stations, and gas processing facilities require high-flow filtration capable of handling large volumes at minimal pressure drop. Strainrite's new HIGH-FLOW elements (6.25" OD) deliver up to 500 GPM per 60" element with inside-out flow and injection-molded cage for superior strength — available in polypropylene microfiber (1–90µm) and borosilicate microglass (2–30µm) media. The MADD-MAXX large-diameter elements (7" OD) in microglass, polypropylene, resin-bonded, and felt media provide versatile filtration from 0.2µm to 200µm for pipeline protection, gas dehydration, and produced water treatment.
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Refineries and petrochemical plants require filtration across numerous process streams — from crude desalting through catalytic cracking to finished product polishing. Strainrite's Clarity Pleated Depth Cartridges (Pur-Pleat, Poly-MAXX, Pur-Pleat Select with gradient density/HSL technology) remove catalyst fines, particulate, and corrosion products from process fluids. For amine systems, glycol dehydration, and lube oil polishing, our SPMF absolute-rated and HPM Hi-Pro Micro high-performance filter bags deliver consistent effluent quality. The Oil Bag and Oil Log specialty products are purpose-built for oil/water separation and hydrocarbon removal.
Amine Sweetening removes toxic and corrosive components, primarily hydrogen sulfide and carbon dioxide, from a hydrocarbon gas stream. Glycol Dehydration removes water to prevent corrosion or freezing of processing equipment.
Part of the Amine/Glycol filtration process involves critical filtration steps such as:
Proper filtration is critical to these processes. Contamination from particulate matter, foaming and other unwanted byproduct effects hampers operational efficiency when left unchecked by a poor filtration system.
For amine filtration requirements that are 10 microns and higher, Strainrite offers the polypropylene EVP with patented enhanced vertical pleat technology. For higher solids loading applications, the Madd-MAXX XL exceeds expectations. For 1 - 5 micron applications, Strainrite recommends the Madd-MAXX MF.
Glycol filtration is full flow, typically using 10 micron nominal filtration. Strainrite's Visc-MAXX element easily replaces the majority of competitor brands. One P1 size element replaces 40 competitor 10" equivalent resin bonded cartridges.
Make-up Amine/Glycol Filtration: to protect downstream equipment from particulates that settle in storage tanks, to maximize operational efficiency and to minimize energy costs and foaming
Carbon Bed Pre-Filtration: to minimize large particulates that can foul the carbon beds and to improve operational efficiency and carbon resin life
Carbon Bed Post-Filtration: to prevent carbon particles from migrating down stream, to reduce unnecessary maintenance due to plugging and equipment damage and to maximize absorber performance
Sour Water Filtration: to protect water treatment equipment from contaminants caused by highly corrosive hydrogen sulfide and ammonia
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Cooling water, boiler feedwater, produced water disposal, and environmental discharge all require reliable filtration for equipment protection and regulatory compliance. Strainrite's MADD-MAXX JUNIOR (4" OD) compact elements provide 2.5x the surface area of a #2 filter bag in a smaller footprint — ideal for skid-mounted produced water systems and space-constrained offshore platforms. Pur-Pleat G nominally rated depth cartridges (0.25–50µm) and Glas-MAXX microglass depth cartridges serve cooling tower side-stream filtration. The Absorbrite two-in-one bag combines filtration and oil absorption, while the MAG BAG multi-magnet design captures ferrous contaminants from hydraulic and lube oil circuits.
For amine, diesel, gasoline, heating oils, heavy fuel oils, jet fuel, kerosene, naphtha and many other products, final filtration occurs both during and after processing, refining, storage and transfer. Through the network of pipelines and storage systems, water, dirt and other contaminants belie the need for the highest quality microfiltration systems to meet customer specifications.
Strainrite's products will ensure the highest quality microfiltration to ensure fluids are free of contaminants during the storage and transfer process.
Frac Tanks are key to portable water storage solutions. Sometimes called fixed-axle storage tanks, frac tanks provide safe and secure water storage. Frac tank filtration and salt water disposal wells require versatile solutions. Strainrite delivers solutions. If no oil is present Strainrite's EVP bags (10 micron is standard) will do. When oil is present Strainrite offers the BRB or Visc-MAXX (10 or 25 micron). No need to replace cartridge housing already on site. Strainrite offers the CRB-Pleat resin-bonded cartridge.
For rail car and tank loading /offloading of oil based streams, Strainrite's BRB bags are recommended, provided polyester fibers are chemically compatible.
Produced Water Filtration
Fuel & Hydrocarbon Filtration
Amine & Glycol Filtration
Completion & Injection Fluid Filtration
Oil and gas operations push filtration equipment to its limits — extreme pressures, corrosive fluids, high temperatures, and remote locations. Strainrite's SRID Series vessels are fabricated from carbon steel, 304/316 stainless, Duplex Stainless, to withstand the most aggressive operating conditions.
Oil and gas operators face stringent environmental and safety regulations that demand verified filtration performance. Strainrite's quality systems are designed to meet and exceed these requirements.
All Strainrite filtration products are manufactured in ISO 9001-accredited facilities with rigorous quality control protocols. Our silicone-free production environment ensures compatibility with sensitive oil and gas processes, while complete traceability from raw material to finished product supports audit readiness and regulatory compliance for operations governed by API, ASME, and EPA standards.
Strainrite's absolute-rated SPMF bags and Clarity cartridge filters are validated to deliver consistent particle removal performance — enabling operators to meet produced water discharge limits, stormwater regulations, and refinery effluent standards. Our technical team provides filtration engineering support to help specify the right solution for your compliance targets.
HIGH-FLOW Elements
6.25" OD large-pleat elements up to 500 GPM per 60" filter in polypropylene or microglass media
MADD-MAXX Large Diameter Elements
7" OD inside-out flow in microglass, polypropylene, resin-bonded, and felt media (0.2–200µm)
MADD-MAXX JUNIOR Compact Elements (NEW)
4" OD hybrid pleated elements with 2.5x bag surface area for compact systems
X-tra Life (POXL/PEXL) & EVP Extended-Life Filter Bags
longer service intervals in high-solids O&G applications
SPMF Absolute-Rated & HPM Hi-Pro Micro Filter Bags
high-efficiency bag filtration for refinery and petrochemical service
Oil Bag & Oil Log Specialty Products
purpose-built for oil/water separation and hydrocarbon removal
Absorbrite Two-in-One Bags
combined filtration and oil absorption
MAG BAG Multi-Magnet Bags
ferrous contaminant capture from hydraulic and lube oil
Pur-Pleat Select Gradient Density Cartridges
HSL technology for catalyst fine and gel removal
SRHD Heavy Duty Vessels
radial seal, 150–1,000 psi, Twin/Duplex configurations
SRX/SRMX "X-Tra Seal" Vessels
Five Points of Seal bypass elimination, MADD-MAXX compatible
SRL Low Flow Vessels
versatile strainer-to-filter conversion for utility application
