Choosing the right inline components is essential for maintaining air quality, protecting tools, and maximizing system efficiency. This article highlights five in-line products designed to treat compressed air in line with regulators, filters, and desiccants. Each section covers key features, performance specs, and how these parts fit into a complete inline air treatment setup.
| Product | Type | Key Feature | Max Input | Flow (SCFM) |
|---|---|---|---|---|
| Heavy Duty In-Line Particulate Filter With Metal Bowl | Filter / Moisture Trap | 5 Micron, Visible Sight Glass | 250 PSI | 140 |
| Heavy Duty In-Line Pressure Regulator (3/4″ NPT) | Regulator | 7–215 PSI adjustable | 250 PSI | 140 |
| Heavy Duty In-Line Pressure Regulator (3/4″ NPT, 175 CFM) | Regulator | 7–215 PSI adjustable | 250 PSI | 175 |
| Industrial Rated High Flow Particulate Filter / Water Trap | Filter / Water Trap | 5 Micron, Metal Bowl | 225 PSI | 160 |
| In-Line Desiccant Air Dryer with Metal Bowl | Air Dryer | Desiccant drying in-line | N/A | N/A |
Heavy Duty Particulate Filter With Metal Bowl

THB’s heavy-duty inline particulate filter is designed for robust air lines, including moisture moisture trap functionality. It features a 5-micron element, a visible sight glass in the metal bowl, and a 140 SCFM flow rate. It handles up to 250 PSI input and 215 PSI output, with 3/4″ NPT ports and a wall-mount bracket included. This unit is suited for removing particulates and moisture upstream of sensitive tools and actuators.
- In-line particulate filtration at 5 microns with moisture-trapping capability.
- Metal bowl with clear sight glass for quick visual checks.
- Flow rated to 140 SCFM; suitable for mid-flow lines.
Heavy Duty In-Line Pressure Regulator (3/4″ NPT)

This inline regulator offers robust regulation from 7 to 215 PSI with a 250 PSI maximum input. It comes with a wall-mount bracket and gauge, enabling easy monitoring and placement near the point of use. The regulator supports up to 140 SCFM flow and is ideal for controlling pressure to tools and downstream components in compact lines.
- Precise adjustable pressure control from 7 to 215 PSI.
- Includes gauge and wall-mount bracket for convenient setup.
- High flow rate compatible with mid-sized air systems.
Heavy Duty In-Line Pressure Regulator (3/4″ NPT, 175 CFM)

This regulator variant emphasizes higher air throughput with a 175 CFM rating, maintaining the same 7–215 PSI adjustable range and a sturdy wall bracket with gauge. It’s designed for larger point-of-use needs while preserving stable downstream pressure and protection for tools that demand more airflow.
- High-flow capacity up to 175 SCFM.
- Adjustable 7–215 PSI with included gauge.
- Durable inline design suitable for demanding environments.
Industrial Rated Filter / Water Trap With 5 Micron

This high-flow inline filter traps both moisture and particulates, featuring a 5-micron element and a 11-ounce metal bowl. It supports 225 PSI input and 215 PSI output, offering up to 160 CFM. The unit’s 1″ NPT ports provide stronger flow for heavier systems and integrated moisture control for pneumatic lines.
- 5-micron filtration with moisture trapping.
- 1″ NPT ports for higher flow capacity.
- Metal bowl with visibility and a reliable 160 CFM rating.
Industrial Inline Desiccant Air Dryer

Edge Industrial’s heavy-duty desiccant dryer provides in-line drying for compressed air, reducing moisture to protect pneumatic tools. Equipped with a metal bowl and visible sight glass, this unit complements filtration by further lowering dew point. Use in tandem with a water-removal filter for best results in humid environments.
- Inline desiccant drying stage for dry air.
- Metal bowl with sight glass for quick checks.
- Best paired with upstream moisture removal filters.
Buying Guide: Key Considerations For Inline Air Components
- Flow capacity and pressure range: Match SCFM and PSI to your system’s demand. Higher flow helps protect tools that require consistent air pressure.
- Filtration vs. drying balance: In-line filters remove particulates and moisture; inline desiccants further reduce humidity. Combining stages often yields the cleanest air.
- Port size and compatibility: Ensure NPT sizes (3/4″, 1″) align with existing piping. Note outside thread dimensions when upgrading or stacking components.
- Accessibility and maintenance: Choose components with sight glasses and easy drain/auto-drain options to minimize downtime and maintenance effort.
- System economy and layout: Place regulators close to end-use points to minimize pressure drop. Group filters and dryers in an order that makes maintenance logical (filter before dryer, regulator after).
- Materials and durability: Metal bowls and robust housings resist wear and provide longer service in industrial environments.
- Auto-drain and moisture management: Auto-drain features reduce manual maintenance but require energy considerations. Balance reliability with maintenance needs.
When configuring inline air treatment, balance the number of stages with available space and maintenance capability. For precision tools, prioritize filtration and drying stages upstream of regulators to preserve consistent downstream pressure. For heavy industrial lines, larger port sizes and higher flow ratings help maintain system performance under load.