Product Spotlight: PneumaticPlus SAW400 Series Air Filter Regulator Combos
Table of Contents
When it comes to keeping your compressed air system running smoothly, air filter regulator combos (also known as FR combos or FRL units without the lubricator) are a simple but powerful solution. They combine two essential functions into one compact unit — removing contaminants from compressed air while ensuring stable, consistent pressure for downstream equipment.
One of the most popular choices on the market today is the PneumaticPlus SAW400 Series (1/2" NPT port size), available in multiple configurations to meet different applications and environments.
Why Choose the SAW400 Series?
Compressed air is rarely clean or stable on its own. Dust, rust, and water can enter the system, while fluctuating pressure can cause equipment wear and inconsistent performance. The SAW400 Series filter regulator combo solves both problems at once:
Air Filter: Removes particulates, debris, and moisture from the airstream.
Regulator (with gauge included): Provides steady, adjustable downstream pressure to keep tools and machines performing reliably.
Integral Piggyback Design: Compact, space-saving, and simple to install.
High Flow Capacity: Rated at 106 SCFM with 1/2" NPT ports.
The result? Longer tool life, fewer equipment breakdowns, and more consistent productivity.
Bowl & Drain Options
The SAW400 Series gives you flexibility in both bowl type and drain style, so you can configure it for your environment:
Polycarbonate Bowl – Lightweight, transparent for easy monitoring.
Metal Bowl – Added durability for harsh environments or when pressure exceeds 150 PSI.
Manual Drain – Simple and economical.
Auto Drain – Hands-off convenience that automatically discharges collected water.
SAW400 Series – Full Configuration Chart
| Bowl Type | Drain Type | Model Number | Purchase Links |
|---|---|---|---|
| Poly Bowl | Manual Drain | SAW400-N04BG | PneumaticPlus.com · Amazon |
| Poly Bowl | Auto Drain | SAW400-N04BDG | PneumaticPlus.com |
| Metal Bowl | Manual Drain | SAW400-N04BG-MEP | PneumaticPlus.com · Amazon |
| Metal Bowl | Auto Drain | SAW400-N04BDG-MEP | PneumaticPlus.com |
Applications
The SAW400 Series Air Filter Regulator Combos are widely used in:
Automotive shops and spray booths
CNC and machine tool operations
Manufacturing and assembly lines
General compressed air systems in workshops and factories
Customer Tip
If you’re working with a simple compressed air setup, the SAW400-N04BG (poly bowl) or SAW400-N04BG-MEP (metal bowl) are excellent choices to ensure clean, regulated air for your tools and equipment.
For larger systems with central air dryers that treat air at the source, the SAW400 Series still plays an important role as a point-of-use solution. By placing a filter regulator at the end-use point, you add an extra layer of protection to ensure the air reaching your tools is clean, dry, and properly regulated.
Integral vs. Modular Filter Regulators
While the SAW400 Series is an integral (piggyback) filter regulator, some customers may prefer a modular setup depending on system needs.
Integral (Piggyback) – Filter and regulator combined into a single body for compact design and easy installation. This style works especially well when space is restricted and a streamlined solution is needed. (SAW400 Series)
Modular – Filter and regulator are separate units connected by a bracket. This design provides higher flow rates compared to piggyback units and allows individual components to be replaced or serviced. Modular setups are also more flexible for system customization, but require more installation space. (SAU420 Series)
Integral vs. Modular Filter Regulators – 1/2" NPT Options
| Style | Description | Available Models | Purchase Links |
|---|---|---|---|
| SAW400 Series (Integral Piggyback) | Compact single-body design, space-saving, simple installation. Best for general-purpose setups or when space is limited. | SAW400-N04BG (Poly Bowl Manual) SAW400-N04BDG (Poly Bowl Auto) SAW400-N04BG-MEP (Metal Bowl Manual) SAW400-N04BDG-MEP (Metal Bowl Auto) | Links above |
| SAU420 Series (Modular) | Separate filter and regulator connected by a bracket. Provides higher flow rates and flexibility, with easy replacement of individual components. Requires more space to install. | SAU420-N04G (Poly Bowl Manual) SAU420-N04DG (Poly Bowl Auto) SAU420-N04G-MEP (Metal Bowl Manual) SAU420-N04DG-MEP (Metal Bowl Auto) | SAU420-N04G · SAU420-N04DG · SAU420-N04G-MEP · SAU420-N04DG-MEP |
Why PneumaticPlus?
Since 2010, PneumaticPlus has been a trusted manufacturer of pneumatic filters, regulators, lubricators, and drying systems. With a focus on reliability, durability, and value, PneumaticPlus products are the choice of professionals who demand performance they can count on.
Final Thoughts
The SAW400 Series Air Filter Regulator Combo is a proven best-seller because it delivers exactly what compressed air users need: clean, stable, and regulated air in one compact unit. With options for poly or metal bowls, manual or auto drains, and ready-to-install kits with gauge and bracket included, PneumaticPlus makes it easy to find the right solution for your air system.
For users who prefer a modular style, the SAU420 Series provides a great alternative in the same 1/2" NPT size, with higher flow rates and flexible configuration options.
Disclaimer
This information is provided for reference purposes only and has been obtained from sources believed to be accurate and reliable. However, users must verify specifications and suitability for their specific application directly with the manufacturer before making purchasing decisions.
