Find the right filtration for your industry and keep your operation running.

The problems

• Abrasive particles and water shorten the life of pumps, valves, and injectors in the field.
• Remote sites can turn one missing filter into days of downtime.
• Frac and produced water carry heavy solids that overwhelm undersized housings.

What we supply

• Schroeder Industries builds custom SUS304 stainless steel frac water housings.
• High-pressure Schroeder hydraulic housings are rated up to 6,500 psi.
• TTI reports that its coalescers remove water from diesel to under 75 ppm.
• Stocking programs keep critical elements on hand at remote sites.

What filter housings are used for frac water?

Frac water filtration typically uses stainless steel bag and cartridge housings sized for heavy solids loading. Schroeder Industries builds custom SUS304 stainless frac water housings, and HydraStoke matches the micron rating and flow capacity to your water source and your disposal or reuse requirements.

The problems

• Salt air and humidity corrode housings and contaminate oil.
• Water in marine diesel damages injectors and stalls engines.
• Offshore crews need filters that are simple to change and easy to source.

What we supply

• Schroeder offers DNV-certified housings, including the HS60 series.
• Hengst stainless steel basket filters resist aggressive media.
• Fuel polishing systems and coalescers remove free water from day tanks and bulk storage.
• HIFI FILTER covers engines, hydraulics, and fuel across mixed fleets with one part-number system.

Can HydraStoke supply class-certified filtration for offshore use?

Yes. Schroeder Industries offers DNV-certified housings, including the HS60, and DNV type-approved condition monitoring for marine thrusters. HydraStoke's team also tells you plainly when a product is a poor fit for a job, such as aluminum coalescers on class-society or SOLAS work.

The problems

• Abrasive dust from crushing, conveying, and drilling enters hydraulic oil and wears pumps and valves.
• Contaminated diesel shortens injector life on haul trucks and loaders.
• Dust collectors clog quickly, which raises pressure drop and energy costs.

What we supply

• Schroeder offers air-operated filter carts for hazardous environments and MSHA-approved options.
• Hengst Pure.Power elements protect critical hydraulic systems.
• Hengst dust collector cartridges and pleated bags handle heavy dust loads.
• Schroeder reports that fuel polishing cleaned one mine's diesel from ISO 24/23/21 to 15/13/10.

How clean should diesel fuel be for mining equipment?

Schroeder Industries recommends diesel at about ISO 18/16/13 in bulk storage and as clean as ISO 12/9/6 at modern high-pressure common-rail injectors. Fuel polishing at the bulk tank and filtration at the dispenser close that gap, and Schroeder reports one mine improved its fuel from ISO 24/23/21 to 15/13/10.

The problems

• Varnish deposits stick servo valves and can trip turbines.
• Water in turbine and transformer oil speeds up oxidation.
• Dirty intake air reduces turbine efficiency.

What we supply

• Schroeder varnish removal and IXU ion exchange units treat turbine oil and EHC fluids.
• Vacuum dehydrators remove water from turbine and transformer oils.
• Hengst supplies gas turbine intake filters and oil mist eliminators.
• TTI PowerBreather desiccant breathers stop moisture at the reservoir vent.

How do I remove varnish from turbine oil?

Varnish forms as oil oxidizes and leaves deposits on valves and bearings. Schroeder Industries offers VEU units for filterable deposits, VMU units for dissolved varnish, and IXU ion exchange units for phosphate ester EHC fluids, and an MPC test under ASTM D7843 measures varnish potential before and after treatment.

The problems

• Diesel that sits in storage collects water, sludge, and microbial growth.
• A generator that fails to start puts uptime commitments at risk.
• Fuel testing identifies contamination, and polishing is what removes it.

What we supply

• Fixed Schroeder BDFP panels polish fuel and drain water automatically.
• Portable carts clean tanks between scheduled service visits.
• TTI reports that its coalescers remove water from diesel to under 75 ppm.
• Fluid analysis kits track fuel cleanliness over time.

What cleanliness should backup generator diesel meet?

Schroeder Industries targets about ISO 18/16/13 for diesel in bulk storage and cleaner fuel at the engine, down to about ISO 12/9/6 for high-pressure common-rail injection. HydraStoke recommends cleaning the tank first and sizing the polishing flow to the tank volume so fuel stays at target.

The problems

• Condensation adds water to stored fuel every day.
• Water feeds microbial growth that clogs filters and corrodes tanks.
• New oil and fuel often arrive dirtier than equipment can tolerate.

What we supply

• Schroeder reports that BDS skids remove at least 99.5% of free water in a single pass.
• Tank-top filters and filter carts clean new oil before it goes into service.
• TTI PowerBreather desiccant breathers stop moisture at the tank vent.
• HydraStoke sizes the polishing flow to your tank and recommends cleaning the tank first.

Why should new oil be filtered before use?

New oil often arrives dirtier than the cleanliness target your equipment requires, so filtering it at the drum, tote, or bulk tank keeps contamination out from the first fill. Schroeder tank-top filters and filter carts clean new oil during transfer, and desiccant breathers keep stored oil dry.

The problems

• Process water carries solids that foul heat exchangers and spray nozzles.
• Manual filter changes interrupt continuous processes.
• Aggressive fluids degrade standard seals and media.

What we supply

• Schroeder AutoFilt filters clean their own screens by reverse flow while the process runs.
• Duplex filters let crews change elements with the system online.
• Hengst elements are available with FKM seals and stainless steel components for demanding fluids.
• Bag and cartridge housings handle high-flow product filtration.

What is a self-cleaning backflush filter?

A self-cleaning backflush filter, such as the Schroeder AutoFilt RF3, cleans its own screen with reverse flow while the process keeps running. Plants use them on cooling water, process water, and raw water intakes to reduce manual cleaning and keep flow steady.

The problems

• Contaminated hydraulic oil causes press and molding machine downtime.
• Metalworking chips and fines shorten coolant life.
• Oil mist from CNC machines affects air quality on the shop floor.

What we supply

• Hengst offers Pure.Power elements for critical uptime and Pure.Function elements for lower total cost.
• Hengst MultiCNC and MultiAir collectors capture oil and coolant mist.
• Schroeder filter carts and kidney loops clean oil while machines run.
• Online sensors trend cleanliness for predictive maintenance.

What ISO cleanliness code does a servo valve need?

Servo valves typically need ISO 4406 16/14/11 or cleaner, which usually calls for a 3-micron filter element. Hengst recommends 3-micron elements for servo valves, 10-micron elements for proportional valves, and 20-micron elements for general pump and valve protection.

The problems

• Scale, metal particles, and water contaminate mill lube and hydraulic oil.
• Unplanned stops on a continuous line carry a high cost.
• Baghouses lose efficiency as bags clog.

What we supply

• Hengst duplex filters allow element changes without a shutdown.
• Hengst reports that pleated bag retrofits cut iron-smelting emissions by 97% in one case study.
• Schroeder offline skids and dehydrators clean large lube reservoirs.
• Large Hengst lube filters handle flows up to 16,000 liters per minute.

Can I change a filter element without shutting down?

Yes. Duplex filters hold two elements and switch flow from one to the other, so crews can change a loaded element while the system runs. Hengst duplex filters are rated up to 400 bar, with very low leakage during changeover and pressure equalization as standard.

The problems

• Airborne viruses, bacteria, and spores travel through shared air in patient areas.
• Conventional filters trap pathogens and leave them alive on the filter.
• Facilities need protection that adds no ozone or chemicals to the air.

What we supply

• MiQRO-Therm units kill captured pathogens with heat and use no UV, ozone, or ionization.
• Portable Mi-Q units serve patient rooms, waiting areas, and offices.
• A MiQRON HVAC retrofit filter brings the technology to existing air handlers.
• Hengst reports that each of its HEPA filters is individually scan-tested to EN 1822.

Does MiQRON kill viruses?

In peer-reviewed testing published in Materials Today Physics in 2020 and conducted at the Galveston National Laboratory, a MiQRO-Therm prototype killed 99.8% of live airborne SARS-CoV-2 and 99.9% of anthrax spores in a single pass. The technology was developed at the University of Houston.