How to install oil water separator on air compressor

1.Choose the Right Location

Install the oil-water separator downstream from the compressor on its discharge line, as close as possible to the compressor itself. This allows gravity to drain water into the compressor tank and prevents condensate from entering the airstream.

2.Mount the Separator

Ensure the separator is mounted horizontally and directly above the horizontal pipeline. The top of the water level regulating pipe and the upper edge of the oil overflow tank must be kept at the same level.

3.Connect the Piping

Connect the separator to the discharge line using the appropriate fittings and ensure all connections are tight to prevent air leaks. Use Teflon tape or a suitable sealant on the threads.

4.Install the Drain Valve

Ensure the valve on the pipeline is closed before operating the equipment to avoid affecting its normal operation. The drain valve should be easily accessible for regular maintenance.

5.Check for Leaks

After installation, perform a pressure test to ensure there are no leaks in the system. This can be done by pressurizing the system and checking all connections for air leaks.

6.Regular Maintenance

Regularly check and clean the filter cartridge, as the frequency of filter changes may vary depending on the operating environment. Ensure the drain valve is opened regularly to remove accumulated condensate.

By following these steps, you can effectively install an oil-water separator on your air compressor to improve air quality and protect your tools from moisture and oil contamination.

To install an ARB air compressor, follow these detailed steps based on the ARB On-Board Air Compressor Installation Guide :

Tools and Parts Required

Standard toolbox

Electric drill and standard bit kit

Wire crimpers

Large terminal crimpers

Wire feeder or metal hanger (optional)

ARB air compressor kit (includes necessary hardware and fittings)

Step-by-Step Installation Guide

1. Mounting the Compressor and Plate

Prepare the Mounting Plate: Use the supplied hardware to mount the ARB compressor to the Agile Off Road plate. Apply blue Loctite to the bolts for added security.

Drill Inner Fender Holes: On the driver's side inner fender, drill out the 2 existing inner fender holes using a 17/32" drill bit (not supplied). Use a drill bit stop collar to avoid drilling through the outer fender skin.

Install Nut-Serts: Use the supplied Nut-Sert tool to install Nut-Serts into the inner fender holes.

Mount the Stand-Off Anchor: Install the lower stand-off anchor using the supplied hardware. Apply blue Loctite.

Attach the Plate and Compressor: Secure the plate and compressor using the supplied hardware.

2. Assembling the Air Fitting Brackets

Assemble Air Fitting Brackets: Attach the supplied air fitting brackets with the air bulkhead fitting.

3. Connecting the Air Lines

Apply Teflon Tape: Apply Teflon tape to the supplied T-fitting and install it on the compressor outlet port.

Route Air Lines: Connect the supplied 3/8" line from the compressor T-fittings to the front and rear airline fittings. Avoid routing the airline near exhaust, suspension, and driveline components.

Install Rear Bracket: Attach the rear bracket to the pinch weld using the supplied bolts (drilling required).

4. Connecting the Electrical System

Remove Lower Dash Panel: Access the spare switch location by removing the lower dash panel below the headlight switch.

Install Switch and Harness: Install the supplied switch/switch harness into the spare switch location and route wires through the existing upper firewall pass-through hole.

Connect Power Harness: Connect the red and black wires from the power harness to a suitable 12V power source. Route the wires through the firewall using the supplied splice connectors.

Connect Switch Harness: Connect the switch harness wires (green, yellow, black, and purple) according to the supplied diagrams. Ensure the blue/white wire with the diode is tapped into the correct fuse.

5. Testing the System

Test Wiring and Compressor: Before final mounting, test the wiring and compressor to ensure everything works.

Secure Mounting: Once tested, securely mount the switch and compressor in their final positions.

6. Optional Modifications

Relocate Horn and Manifold: For a cleaner setup, relocate the horn and manifold using custom brackets.

Route Airline: Use JIC-4 connectors and elbows to route the airline neatly to the manifold.

Attach Coupler: Secure the ARB coupler to the manifold and cover it.

Install Air Filter Relocation: For better performance in dusty or muddy environments, relocate the air filters to a more suitable location.

Final Notes

Check for Leaks: After installation, test the system for leaks and ensure all connections are secure.

Regular Maintenance: Periodically check the system for wear and tear, especially if used frequently in harsh conditions.

By following these steps, you can successfully install an ARB air compressor for reliable off-road and overlanding use.

1.Safety first
• Shut off the compressor and bleed the tank to 0 PSI.
• Unplug the unit.

2.Pick the correct valve
• ½" male NPT inlet threads fit most tanks; choose brass for corrosion resistance .
• Pressure rating ≥ 200 PSI (or your compressor max) .

3.Remove the old manual drain
• Place a drip pan under the tank.
• With a wrench, unscrew the existing drain plug or petcock from the lowest point of the tank .

4.Install the auto-drain valve
• Wrap the threads with Teflon tape (2–3 turns clockwise).
• Screw the new valve in hand-tight + ¼–½ turn with a wrench; do not overtighten .
• Arrow or flow mark should point downward for gravity drainage.

5.Connect power (if needed)
• Timer or electronic models: plug the 110 V cord into a nearby outlet or wire per manual .
• Float or pneumatic models: no power required.

6.Route the discharge hose
• Attach the supplied flexible drain hose to the valve outlet.
• Run the hose to a floor drain, bucket, or outside-avoid creating a water pocket .

7.Set the timer (timer/electronic versions)
• ON time = 1–3 s (how long the valve stays open).
• OFF time = 5–10 min (how often it opens) .
• Fine-tune after a few cycles so only water, not air, is lost.

8.Test
• Power up the compressor; watch the valve discharge condensate at the set intervals.
• Check for leaks with soapy water; tighten if necessary.

Maintenance tip
Once a month, press the manual-test button (if equipped) to clear any debris .

1.Plan the layout
• Pick a clean, cool, vibration-free spot: inner fender, under-seat box, or bed side.
• Confirm 1–2 in. clearance all round for airflow and belt/pulley access .

2.Bench-prepare the hardware
• Mount compressor to the supplied plate with ARB-supplied M6 bolts + blue Loctite .
• Pre-assemble T-fitting (¼ NPT) + couplers on the compressor outlet; tape threads with Teflon .

3.Mount the plate to the vehicle
• Drill two 17/32 in. holes in the inner fender (use a stop collar to avoid outer skin) .
• Install 5/16-18 nut-serts with the provided tool; secure plate with stand-off anchors .

4.Run the air lines
• Route 3/8 in. DOT nylon line from compressor T-fitting to front and rear bulkhead brackets.
• Keep lines away from exhaust, suspension, and drivetrain; zip-tie every 6–8 in. .

5.Wire the system
• Route switch harness through the upper firewall grommet to an unused dash switch blank .
• Splice red wire to a key-on 12 V source, black to ground, blue to instrument-panel illumination .
• Connect compressor power harness directly to battery via supplied in-line fuse and relay .

6.Final checks
• Re-install Weather-Pack connectors once harnesses are inside the engine bay .
• Key-on, test compressor for leaks and proper cycling; adjust pressure switch if needed.

Tools you'll need
Socket set, 17/32 in. drill bit, nut-sert tool, wire crimpers, heat gun, thread sealant, zip-ties .

Install takes 2–3 hours on most Jeeps/trucks; follow the kit-specific routing diagram to avoid hot or moving parts .

1. Identify the Installation Point

Determine the most effective location for the air pressure regulator, typically at the air compressor's outlet or before the air enters specific tools or machinery. This ensures the regulated air is delivered where it's most needed.

2. Prepare the System

Before starting the installation, make sure the air supply is completely shut off to avoid any accidental discharge of compressed air. It's also important to release any residual pressure in the system to ensure a safe working environment.

3. Inspect the Regulator

Before installation, inspect the air pressure regulator for any damage or defects to ensure it's in good working condition. Pay attention to the flow direction marked on the regulator, which indicates the correct orientation for installation.

4. Install Mounting Brackets (if necessary)

If the regulator requires mounting brackets for installation, secure these to the wall or machinery as per the manufacturer's instructions. Ensure they are firmly in place to support the regulator's weight.

5. Connect the Regulator

Thread the regulator into place, aligning it according to the flow direction indicated. Use thread sealant on all threaded connections to prevent air leaks. Tighten the connections securely, but be careful not to over-tighten and damage the threads.

6. Secure the Regulator

If the installation requires additional support, use the mounting brackets or clamps to secure the regulator firmly in place. This prevents any movement or vibration from loosening the connections over time.

7. Check for Leaks

Once installed, slowly turn on the air supply and check all connections for leaks. Apply a soapy water solution to each connection; bubbling indicates a leak. Tighten any fittings as necessary to ensure airtight connections.

8. Adjust the Pressure

With the air supply on and the system pressurized, adjust the regulator to the desired pressure setting. Monitor the system's pressure gauge to ensure it stabilizes at the set pressure.

9. Test the System

Operate the system as you normally would to ensure the regulator maintains the desired pressure during use. Make any necessary adjustments to the regulator to achieve optimal performance.

10. Regular Maintenance

After installation, include the air pressure regulator in your regular maintenance schedule. Check periodically for wear, leaks, or any signs of damage to ensure it continues to operate efficiently.

By following these steps, you can successfully install a pressure regulator on your air compressor to ensure stable and efficient air pressure for your tools and equipment.

1.Safety first
• Unplug the compressor and open the tank drain until the gauge reads 0 PSI .
• Lock/tag-out the breaker if hard-wired.

2.Remove the old switch
• Take a photo of every wire.
• Unscrew the old switch from the tank nipple (¼″ or ⅜″ NPT) with a wrench.
• Clean the nipple threads with a small wire brush.

3.Mount the new switch
• Wrap 2–3 turns of Teflon tape clockwise on the nipple threads .
• Screw the new switch on hand-tight, then snug with a wrench (do not overtighten).
• Arrow or port on the switch must point toward the tank-no valve between switch and tank is allowed .

4.Wire the switch
• Remove the switch cover.
• Line (power-in) wires → outer screws marked L1 / L2.
• Load (motor-out) wires → inner screws marked T1 / T2 .
• Ground (green or bare copper) → green screw on metal frame .
• Strip ½″ insulation, insert under screws, and torque firmly.

Typical small-switch wiring (120 V shown):

Power cord black ─→ L1

Power cord white ─→ L2

Motor black ──────→ T1

Motor white ──────→ T2

Ground ───────────→ green screw

5.Set pressures (if adjustable)
• Big screw = cut-in pressure (start). Turn clockwise ↑, counter-clockwise ↓.
• Small screw = differential (cut-out – cut-in). Adjust only after cut-in is correct .
• Start with factory settings (often 6 bar cut-in / 8 bar cut-out) and fine-tune in small increments while cycling the compressor.

6.Test
• Re-apply power. Let the tank fill; motor should stop at the new cut-out.
• Slowly crack the drain valve; motor should restart at the new cut-in.
• Spray soapy water on the switch body-no bubbles = leak-free.

Tips & warnings
• Use only switches rated for your motor's voltage & amperage.
• Do not exceed the tank's max working pressure when setting cut-out.

1. Safety First

Unplug the Compressor: Ensure the compressor is turned off and unplugged from the power source.

Drain the Tank: Release any remaining air pressure from the tank.

2. Access the Reed Valves

Remove the Air Filter: This will give you access to the intake port.

Disconnect the Tank Supply Line: This line connects the tank to the compressor head.

Remove the Head: The head is the top part of the compressor that houses the valves.

Remove the Valve Plate: This plate holds the reed valves in place.

3. Inspect and Clean the Valves

Clean the Reed Valves: Use a degreaser and a clean rag to wipe the valves, plate, and head clean.

Inspect for Damage: Check the reed valves for any cracks or chips. If you find any, replace them.

4. Install the New Reed Valves

Cut the Reed Material: If you are making your own reed valves, cut the reed material (such as brass or stainless steel) to the desired size. It should be slightly larger than the opening in the valve body to ensure a good seal when closed.

Assemble the Valve: Place the reed into the valve body. It should cover the inlet and be able to flex open and closed with pressure changes.

Secure the Reed: Use screws or bolts to secure the reed in place, ensuring it can still move freely.

Seal the Valve: Cut and place a gasket around the edges of the valve body to prevent air leaks.

5. Reassemble the Compressor

Reinstall the Valve Plate: Use spray sealant to reinstall the valve plate and head on the compressor.

Install and Torque the Head Bolts: Ensure they are tightened to the manufacturer's specifications.

Reconnect the Tank Supply Line: Securely attach the line to the head.

Reinstall the Intake and Filter: Ensure the air filter is properly seated.

6. Test the System

Check for Leaks: Turn on the compressor and check all connections for leaks.

Monitor Pressure: Ensure the compressor builds pressure efficiently and maintains it.

Tips

Material Selection: The thickness of the reed material can affect performance; thinner reeds generally open easier but may not handle high pressures as well.

Alignment: Ensure the reed is properly aligned with the intake port to maximize efficiency.

Regular Maintenance: Regularly check the reed valve for wear and replace it if necessary to maintain optimal performance.

By following these steps, you can successfully install reed valves on your air compressor to ensure efficient air flow and improved performance.

1.Safety & prep
• Turn the compressor OFF, unplug it, and release all tank pressure (open the drain valve or trigger a tool until gauge reads 0 PSI) .

2.Remove the old regulator (if present)
• Unscrew the air hose quick-coupler.
• Place an adjustable wrench on the regulator's hex nut and turn counter-clockwise until it comes off .
• Clean the male threads on the compressor outlet with a scrubbing pad to remove old sealant or rust .

3.Apply sealant
• Wrap 2–3 turns of Teflon tape clockwise on the male threads only; do not cover the end opening, or airflow will be restricted .

4.Attach the new regulator
• Hand-thread the regulator onto the compressor outlet until snug.
• Tighten ¼–½ turn more with a wrench – do not overtighten .
• Check the arrow on the regulator body: it must point toward the hose/outlet, indicating correct airflow direction .

5.Add gauge & plug
• Screw the pressure gauge into the top or side port of the regulator (usually ¼ NPT).
• Install the supplied plug on the opposite port with the provided Allen wrench .

6.Re-attach hose & test
• Reconnect the quick-coupler or hose.
• Power on the compressor, let it fill, then slowly turn the regulator knob clockwise to raise pressure or counter-clockwise to lower pressure .
• Lock the knob (push-in or collar-lock) when the desired PSI is reached.
• Spray soapy water on all new joints-no bubbles = leak-free.

Tip: Choose a regulator rated ≥ your compressor's max PSI and ≥ the tool's required CFM to avoid performance loss .

1. Safety First

Unplug the Compressor: Ensure the compressor is turned off and unplugged from the power source.

Drain the Tank: Release any remaining air pressure from the tank.

2. Locate the Unloader Valve

Pressure Switch Assembly: The unloader valve is usually built into the pressure switch assembly. It may also be found on top of the switch or near the compressor pump.

3. Remove the Old Unloader Valve

Access the Pressure Switch: Remove the cover from the switch.

Disconnect Electrical Wires: Carefully disconnect the electrical wires connected to the solenoid coil.

Remove the Valve: Unscrew the old unloader valve from its mounting.

4. Install the New Unloader Valve

Position the Valve: Place the new solenoid unloader valve into position. Ensure it's threaded correctly to avoid cross-threading.

Install the Valve Body: Use a suitable tool to tighten the solenoid valve, ensuring the coil is upward or with a maximum deflection of 90 degrees.

Attach the Coil: Place the coil on the valve body, with its gasket and nut over it, and tighten according to the manufacturer's specifications.

5. Wire the Solenoid to the Pressure Switch

Connect Wires: Connect one wire from the solenoid unloader valve to the pressure switch's load side. The other wire should be connected to a neutral or ground point.

Check Motor Connection: Ensure the compressor motor is correctly wired to the pressure switch.

6. Test the System

Check for Leaks: Turn on the compressor and check all connections for leaks.

Monitor Pressure: Ensure the compressor builds pressure efficiently and maintains it.

Tips

Material Selection: Ensure the valve body is made of brass and has FKM (Viton) seals for good heat and chemical resistance.

Orientation: The valve should be installed in the correct orientation with the airflow, indicated by an arrow on the valve housing.

Professional Help: If you encounter issues, consider consulting a professional for installation.

By following these steps, you can successfully install an unloader valve on your air compressor to ensure efficient operation and longevity.

1.Choose the right filter
• Inline coalescing or centrifugal separator for bulk water/oil removal.
• Desiccant filter if you need ultra-dry air (paint, plasma, etc.).

2.Where to place it
• After the compressor and after-cooler (or tank) but before any dryer or point-of-use.
• Mount it as close as possible to the compressor discharge and on a drip-leg riser to give condensate a place to collect .

3.Pre-install checklist
• Depressurise the system – open the tank drain until gauge reads 0 PSI.
• Wear safety glasses and gloves.
• Check the flow arrow on the filter body – it must point in the direction of airflow.

4.Install the separator (inline style)
• Cut the airline at the chosen location.
• Insert the separator between two quick-couplers or use a threaded T-fitting.
• Wrap male threads with Teflon tape; hand-tighten first, then ¼–½ turn with a wrench – do not overtighten .

5.Add a drain line
• Connect the separator's auto/manual drain port to a hose that runs to a floor drain or bucket.
• Ensure the hose slopes downward to prevent back-pressure.

6.Test & set
• Pressurise the system.
• Spray soapy water on all new joints – no bubbles = leak-free.
• If the separator has an adjustable drain, set it per the manual (usually 1–3 s open every 5–10 min for timer drains).

7.Maintenance
• Drain condensate daily (or let the auto-drain cycle).
• Replace filter element every 3–6 months or when pressure drop rises ≈ 5 PSI .