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Regulator and Lubricator Assemblies Resource Page

Filter, Regulator, and Lubricator Assemblies

Industrial Service Solutions | eindustrialsolutions.com

Types and Function

Filter, Regulator, and Lubricator assemblies are modular or integrated units combining air filters, pressure regulators, and air lubricators (often with gauges). They are available in several configurations:

  • Standalone individual components

  • Combination filter-regulator units (sometimes called “piggyback”)

  • Two-unit modular combinations

  • Three-unit modular combinations

These assemblies allow for compact, efficient installation. Important specifications to consider when selecting a filter, regulator, and lubricator assembly include:

  • Regulator type (piston or diaphragm)

  • Filtration media and pore size

  • Flow capacity (SCFM)

  • Pressure drop performance

  • Connection or port size

  • Body and bowl materials

  • Environmental compatibility

Combination and modular assemblies save space, simplify installation, and allow for easy replacement of individual components.

Application Markets

Filter, Regulator, and Lubricator assemblies are used in compressed air systems across a wide range of industries:

  • Medical and Healthcare: dental equipment, respirators, laboratory air systems, oxygen concentrators

  • Electronics: testing equipment, circuit board manufacturing, silicon wafer processing

  • Packaging: filling equipment, sealers, wrapping, labeling systems

  • Textiles: industrial sewing machines, looms, dry cleaning equipment

  • Printing: presses, ink flow control, stencil transfer machines

  • Food and Beverage: beverage dispensing, canning, meat processing, cleaning systems

  • Automotive: pneumatic tools, lifts, paint spraying, sand blasting

  • General Manufacturing: actuators, automation equipment, instrumentation

Filters

Filters remove particulate, rust, scale, oil, and moisture from compressed air lines. Proper filtration ensures reliability and long service life of downstream equipment.

Selection considerations:

  • Flow rate in SCFM

  • Acceptable pressure drop

  • Port size

Types include particle removal filters, coalescing filters, and absorption filters with activated carbon.

  • Particle filters protect against pipe scale and dirt.

  • Coalescing filters remove fine oil aerosols.

  • Absorption filters are often used in food and medical applications.

Filter bowls collect condensate and must be drained regularly. Automatic or float-type drains are recommended.

Material caution:

  • Polycarbonate bowls are suitable for many industrial environments but should not be exposed to direct sunlight, solvents, or extreme temperatures.

  • Metal bowls should be used in harsher environments or where compressor lubricants could damage polycarbonate.

Regulators

Regulators maintain consistent downstream pressure despite fluctuations in supply.

  • Relieving regulators automatically vent excess pressure to atmosphere if downstream pressure rises.

  • Balanced-poppet designs reduce instability and minimize droop (loss of set pressure).

  • High-capacity regulators may include an aspirator tube to maintain performance under varying flows.

Always install the filter before the regulator to protect its internal components.

Lubricators

Lubricators introduce a fine oil mist into compressed air lines to reduce friction and wear on downstream pneumatic equipment.

  • High-velocity air draws oil into a mist through a venturi system.

  • Selection is based on port size, oil reservoir capacity, and acceptable pressure drop.

  • Both polycarbonate and metal bowls are available, with metal recommended for harsh environments.

Lubricators include sight glasses for monitoring drip rate and fill plugs for oil replenishment.

Installation and Maintenance

  • Install the filter upstream of the regulator.

  • Use automatic drains for filter bowls.

  • Use metal bowls if system pressure is greater than 150 psig or outside the temperature range for polycarbonate.

  • Modular assemblies often use face connectors for quick removal of individual components.

  • Regularly inspect regulators and recalibrate under normal flow conditions.

  • Monitor oil levels in lubricators and refill as needed.

Featured Filter, Regulator, and Lubricator Products

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Call to Action

At Industrial Service Solutions, we supply complete lines of filter, regulator, and lubricator assemblies through eindustrialsolutions.com. These assemblies are designed for reliability, energy efficiency, and long equipment life.

Browse the products above or contact us for assistance in selecting the right configuration for your compressed air system.

[email protected]
(888) 996-1152