Inline Water Trap Compressor(14)
TCP Global Mini In-Line Air Filter, Oil and Water Separator - Aluminum Body, Drain Valve, Water Trap, Air Dryer Removes Moisture, Dirt, For Compressor Air Line Hose, Air Tool, Spray Gun, Plasma Cutter $15.99

TCP Global Mini In-Line Air Filter, Oil and Water Separator - Aluminum Body, Drain Valve, Water Trap, Air Dryer Removes Moisture, Dirt, For Compressor Air Line Hose, Air Tool, Spray Gun, Plasma Cutter
1/2" Compressed Air In Line Moisture & Water Filter Trap F504 Compressor New $27.95

1/2" Compressed Air In Line Moisture & Water Filter Trap F504 Compressor New
6-Pack G1/4 Air Compressor Water Oil Separator Filters, Inline Moisture Traps for Spray Guns $35.99

6-Pack G1/4 Air Compressor Water Oil Separator Filters, Inline Moisture Traps for Spray Guns
Aestri Pneumatic Air Pressure Regulator Gauge with In-Line Moisture Water Trap Filter Separator, 1/4 Inch Inlet $13.03 Was $14.94

Aestri Pneumatic Air Pressure Regulator Gauge with In-Line Moisture Water Trap Filter Separator, 1/4 Inch Inlet
1" Inline Water Moisture Filter Trap Separator Air Compressor Cyclone Auto Drain $89.95

1" Inline Water Moisture Filter Trap Separator Air Compressor Cyclone Auto Drain
High Pressure 1/4'' Water Oil Separator,Inline Air Hose Filter,Moisture Trap For Compressor Spray Paint Gun Pneumatic Parts ,Easy to Install $34.10

High Pressure 1/4'' Water Oil Separator,Inline Air Hose Filter,Moisture Trap For Compressor Spray Paint Gun Pneumatic Parts ,Easy to Install
1/4 in / 6.35 mm Air Pressure Regulator with Gauge and Oil Water Separator Filter for Spray Guns and Air Compressors, Inline Pneumatic Moisture Trap, 0-150 PSI / 10 Bar, 5.9 in / 150 mm Length $15.33

1/4 in / 6.35 mm Air Pressure Regulator with Gauge and Oil Water Separator Filter for Spray Guns and Air Compressors, Inline Pneumatic Moisture Trap, 0-150 PSI / 10 Bar, 5.9 in / 150 mm Length
Aestri BSP 1/2 Inch Air Compressor Moisture Water Trap Filter Regulator with Mount Connection, Adjustable Pressure Control, Silver, 150 PSI Maximum Pressure $20.24

Aestri BSP 1/2 Inch Air Compressor Moisture Water Trap Filter Regulator with Mount Connection, Adjustable Pressure Control, Silver, 150 PSI Maximum Pressure
Wscoficey Air Regulator Air Regulator, Inline Water Trap Filter Separator with Pressure Regulator for Automotive Refinishing, Construction, Woodworking $11.50

Wscoficey Air Regulator Air Regulator, Inline Water Trap Filter Separator with Pressure Regulator for Automotive Refinishing, Construction, Woodworking
G1/4 in (0.25 in / 6.35 mm) Air Line Filter Pressure Regulator with Auto Drain, 145 PSI / 1.0 MPa Water Oil Moisture Trap Separator for Pneumatic Compressor Tools, 5.12 x 1.97 in / 13 x 5 cm $12.04

G1/4 in (0.25 in / 6.35 mm) Air Line Filter Pressure Regulator with Auto Drain, 145 PSI / 1.0 MPa Water Oil Moisture Trap Separator for Pneumatic Compressor Tools, 5.12 x 1.97 in / 13 x 5 cm
Orvunela Pneumatic Air Pressure Regulator Gauge with In-Line Moisture Water Trap Filter Separator, 1/4 Inch Inlet, 0-140 PSI (150 mm / 5.9 Inches Length) $13.15

Orvunela Pneumatic Air Pressure Regulator Gauge with In-Line Moisture Water Trap Filter Separator, 1/4 Inch Inlet, 0-140 PSI (150 mm / 5.9 Inches Length)
Vowen BSP 1/2 Inch Air Compressor Moisture Water Trap Filter Regulator with Mount Connection $20.29

Vowen BSP 1/2 Inch Air Compressor Moisture Water Trap Filter Regulator with Mount Connection
1/4 in / 6.35 mm Air Pressure Regulator Gauge and Oil Water Separator Filter, 5.9 in / 150 mm Pneumatic Inline Moisture Trap 0-150 PSI / 10 Bar for Spray Paint Gun $14.33

1/4 in / 6.35 mm Air Pressure Regulator Gauge and Oil Water Separator Filter, 5.9 in / 150 mm Pneumatic Inline Moisture Trap 0-150 PSI / 10 Bar for Spray Paint Gun
Orvunela BSP 1/2 Inch Air Compressor Moisture Water Trap Filter Regulator with Gauge $20.94

Orvunela BSP 1/2 Inch Air Compressor Moisture Water Trap Filter Regulator with Gauge
Other options to consider(33)
1/4" MINI INLINE AIR FILTER & WATER TRAP HVLP Spray Gun Airbrush Hose Tool Paint $9.99

1/4" MINI INLINE AIR FILTER & WATER TRAP HVLP Spray Gun Airbrush Hose Tool Paint
NEIKO 30252A Water and Oil Separator for Air Line | 1/4" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Water Moisture Filter Dryer $10.97

NEIKO 30252A Water and Oil Separator for Air Line | 1/4" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Water Moisture Filter Dryer
1/4in Air Inlet Pressure Regulator with In-Line Water Oil Trap Filter Separator for Spray Gun Tools $13.97

1/4in Air Inlet Pressure Regulator with In-Line Water Oil Trap Filter Separator for Spray Gun Tools
Air Pressure Regulator, Spray Pneumatic Gun Air Regulator Gauge Inline oil Water Trap Filter Separator Fit for most spray guns and airlines. $10.57

Air Pressure Regulator, Spray Pneumatic Gun Air Regulator Gauge Inline oil Water Trap Filter Separator Fit for most spray guns and airlines.
Air Regulator with Oil Water Separator and Filter, 1/4 NPT In-line Pneumatic Tool for HVLP Spray Painting, Aluminum Body Pressure Control Valve $25.12

Air Regulator with Oil Water Separator and Filter, 1/4 NPT In-line Pneumatic Tool for HVLP Spray Painting, Aluminum Body Pressure Control Valve
Novixy Air Compressor Filter Water Separator with 1/4 Inch NPT Regulator Gauge, Plastic Air Pressure Trap Tool for Stable Outlet Pressure and Efficient Filtration $13.67

Novixy Air Compressor Filter Water Separator with 1/4 Inch NPT Regulator Gauge, Plastic Air Pressure Trap Tool for Stable Outlet Pressure and Efficient Filtration
Felmuzaro Auto Drain Trap Water Pneumatic Air Compressor Storage Tank Drainer Valve G1/2 Inch $36.56

Felmuzaro Auto Drain Trap Water Pneumatic Air Compressor Storage Tank Drainer Valve G1/2 Inch
Pneumatic Spray Gun Air Pressure Regulator Gauge In-Line Oil Water Trap Filter Separator Kit 1/4 Inch (6.35 mm) Red Finish for Automotive Repair $15.34

Pneumatic Spray Gun Air Pressure Regulator Gauge In-Line Oil Water Trap Filter Separator Kit 1/4 Inch (6.35 mm) Red Finish for Automotive Repair
2PCS Oil Water Separator,Inline Air Hose Filter Moisture Trap For Spray Paint Gun With 2 Connectors Suction Card ,Easy to Install $48.37

2PCS Oil Water Separator,Inline Air Hose Filter Moisture Trap For Spray Paint Gun With 2 Connectors Suction Card ,Easy to Install
Aestri Air Compressor Moisture Trap Oil Water Separator Filter Pressure Regulator Lubricator Unit $31.90

Aestri Air Compressor Moisture Trap Oil Water Separator Filter Pressure Regulator Lubricator Unit
Orvunela BFR-2000 Compressed Air Filter Pressure Regulator Unit with Gauge 1/4 Inch NPT Port Pneumatic Moisture Trap Water Separator for Air Tools $20.40

Orvunela BFR-2000 Compressed Air Filter Pressure Regulator Unit with Gauge 1/4 Inch NPT Port Pneumatic Moisture Trap Water Separator for Air Tools
Air Compressor Filter Regulator,Oil Water Separator Trap Filter Regulator Valve Automatic Drain -200 -300 -400 ,Easy to Install
Air Compressor Filter Regulator,Oil Water Separator Trap Filter Regulator Valve Automatic Drain -200 -300 -400 ,Easy to Install
Orvunela Air Filter Regulator Lubricator Combo 3-in-1 Moisture Water Oil Trap Separator Unit GC200-06 with Pressure Gauge $32.16

Orvunela Air Filter Regulator Lubricator Combo 3-in-1 Moisture Water Oil Trap Separator Unit GC200-06 with Pressure Gauge
Copper Core Water Filter, Regulator Gauge with Inline Oil Water Trap Filter, Suitable for Precise Painting - Type C From $9.99
Copper Core Water Filter, Regulator Gauge with Inline Oil Water Trap Filter, Suitable for Precise Painting - Type C
NS 1/4" Air Pressure Regulator Gauge & In-Line Water Trap Air Filter for Spray Gun $23.71

NS 1/4" Air Pressure Regulator Gauge & In-Line Water Trap Air Filter for Spray Gun
Air Regulator With Air Filter Spray Gun Air Regulator Gauge Air Spray In-Line Water Trap Filter Tools Paint Spray Gun Regulator ,Efficient & Easy to use $39.29

Air Regulator With Air Filter Spray Gun Air Regulator Gauge Air Spray In-Line Water Trap Filter Tools Paint Spray Gun Regulator ,Efficient & Easy to use
Vowen 1/4 Inch Pneumatic Air Pressure Regulator Gauge and Inline Oil Water Separator Filter Unit $13.35

Vowen 1/4 Inch Pneumatic Air Pressure Regulator Gauge and Inline Oil Water Separator Filter Unit
TUXING 4500PSI Diving Air Compressor, Pcp Compressor,Water Sport, Built-in Oil Water Separator, for Filling Diving Scuba Tank , Firefighting, PcpAir Rifle 380V 50HZ Three phase motor (TXEDM043) $1,799.00 Was $1,899.00

TUXING 4500PSI Diving Air Compressor, Pcp Compressor,Water Sport, Built-in Oil Water Separator, for Filling Diving Scuba Tank , Firefighting, PcpAir Rifle 380V 50HZ Three phase motor (TXEDM043)
For Air Maintenance: Plastic Metal 1/4 Inch Air Adjusting Regulator Valve, 2-Pack with Pressure Gauge, Water Trap Filter, Oil Separator $27.38

For Air Maintenance: Plastic Metal 1/4 Inch Air Adjusting Regulator Valve, 2-Pack with Pressure Gauge, Water Trap Filter, Oil Separator
Aestri G1/4 Compressed Air Filter Regulator with Pressure Gauge, 60ml Aluminum Alloy Oil Water Separator for Air Compressors $26.70

Aestri G1/4 Compressed Air Filter Regulator with Pressure Gauge, 60ml Aluminum Alloy Oil Water Separator for Air Compressors
Pond Air Compressor, 550W 5.2CFM Aerator for 3 Acre Lakes, 50' Hose, 3/4 HP with Timer & Valves, Deep Water Oxygenation, No Diffuser, Black $188.35

Pond Air Compressor, 550W 5.2CFM Aerator for 3 Acre Lakes, 50' Hose, 3/4 HP with Timer & Valves, Deep Water Oxygenation, No Diffuser, Black
3/4" NPT HEAVY DUTY Industrial Grade Filter Regulator Coalescing Desiccant Dryer System (MANUAL DRAIN) $158.00

3/4" NPT HEAVY DUTY Industrial Grade Filter Regulator Coalescing Desiccant Dryer System (MANUAL DRAIN)
Pritane 1 4 Inch NPT Inline Brass Water Oil Air Line Regulator Alloy Steel Compressed Air 1 PC $12.19

Pritane 1 4 Inch NPT Inline Brass Water Oil Air Line Regulator Alloy Steel Compressed Air 1 PC
Wscoficey Filter INLINE AIR PRESSURE REGULATOR FILTER TRAP FOR SPRAY , COMPACT DESIGN FOR SOLID CONTAMINANTS, 1/4IN THREAD, 10 BAR WORKING PRESSURE AUTOMOTIVE REFINISH, WOODWORKING $11.57

Wscoficey Filter INLINE AIR PRESSURE REGULATOR FILTER TRAP FOR SPRAY , COMPACT DESIGN FOR SOLID CONTAMINANTS, 1/4IN THREAD, 10 BAR WORKING PRESSURE AUTOMOTIVE REFINISH, WOODWORKING
HPDAVV Oil-Free Dive Air Compressor System 12V 550W, 10L Stainless Steel Tank with 50ft Hose & Regulator for Snorkeling, Boat Cleaning and Lobstering $899.00

HPDAVV Oil-Free Dive Air Compressor System 12V 550W, 10L Stainless Steel Tank with 50ft Hose & Regulator for Snorkeling, Boat Cleaning and Lobstering
Integral Air Regulator With Air Filter In-line Heavy Duty Air Pressure Regulator Kit For Spray Guns And Pneumatic Tools(1/4 NPT) $79.22

Integral Air Regulator With Air Filter In-line Heavy Duty Air Pressure Regulator Kit For Spray Guns And Pneumatic Tools(1/4 NPT)
FAQ
How do I choose the right size water trap?
Picking the right size inline water trap for your compressor depends on your setup. Look at the diameter of your air hose and the fittings you'll use—common sizes include 1/4", 1/2", and 1". Match the trap size to your hose to ensure a proper fit and avoid air leaks.
- Check your compressor's hose diameter.
- Review the tool's air requirements.
- Consider the space available for installation.
Double-check compatibility before buying so everything connects smoothly.
Can I use a moisture trap with spray paint guns?
Yes, inline water traps are commonly used with spray paint guns to help reduce moisture and oil in the air supply. This can lead to cleaner, more consistent paint finishes and help avoid issues like bubbles or streaks.
- Install the trap close to your spray gun for best results.
- Choose a trap that fits your gun's hose size.
- Regularly drain and maintain the trap to keep it working well.
Using a moisture trap can improve your painting experience overall.
How do you install an inline water separator?
Installing an inline water separator is usually straightforward. Start by checking the fitting size on your compressor hose. Most traps simply screw into place between your compressor and the tool.
- Turn off and depressurize your air system.
- Connect the trap to the hose, matching the thread size.
- Tighten securely to prevent leaks.
- Ensure the drain valve is accessible for maintenance.
Follow any instructions that come with the product for safe installation.
How often should I drain a water trap?
How often you need to drain your inline water trap depends on your compressor's usage and humidity levels. Some traps include an auto drain feature, but manual types should be checked regularly.
- Drain after each use if you're working in humid conditions.
- Monitor visible water levels through any clear sections.
- Check at least once a week for light use.
Keeping the trap drained helps maintain airflow and prevents buildup inside your tools.
Are replacement filters available for inline moisture traps?
Some inline moisture traps feature replaceable filters, but many are designed for regular cleaning rather than swapping parts. If your trap has a removable filter, refer to the product manual or manufacturer's website to see if replacements are offered.
- Check if the trap is designed for filter replacement.
- Consult the packaging or manual for details.
- Clean the trap regularly to extend its life.
For most traps, routine maintenance is key to keeping them working efficiently.
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