Airtac GAFR Adjustable Filter Regulator GAFR50020LNWK
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR50020LNWK is a genuine two-in-one filter & regulator — a diversion-type water/particulate filter and a balanced pressure regulator built into ONE body. It has 3/4" ports, a 5 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi). It has no lubricator, so it adds no oil to the airflow.
- TypeFilter & regulator
- Port size3/4"
- Pressure range0.15 - 0.4 MPa (20 - 58 psi)
- Filtering grade5 µm
- Bowl materialPC
- Drainsemi-auto + manual
- Pressure gaugeNot fitted
- Weight950 g
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac GAFR Adjustable Filter Regulator GAFR50020LNWK
The GAFR50020LNWK is a filter and pressure regulator combined in a single body, so it cleans incoming air and sets a steady outlet pressure without needing a separate filter plus regulator. This 3/4in unit operates in the lower 0.15-0.4 MPa (20-58 psi) band and uses a 5 um element to trap fine particles for sensitive downstream equipment.
Its 108 cc condensate bowl collects separated water and solids, and the semi-auto plus manual drain gives you both automatic purging and a manual override. Weighing 950 g, this size class demands a proper panel or frame mount rather than support from the tubing alone. The reverse-flow (reflux) valve is fitted as an ordering difference, and no gauge is supplied, so the 1/4in gauge connection remains available if you add one later.
Airtac GAFR Adjustable Filter Regulator GAFR50020LNWK Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR50020LNWK |
|---|---|
| Series | GAFR500 filter & regulator |
| Port size | 3/4" (PT thread) |
| Filtering grade | 5 µm |
| Pressure range | 0.15 - 0.4 MPa (20 - 58 psi) |
| Type | Lower pressure |
| Bowl material | PC |
| Drain type | Semi-auto drain + manual drain |
| Fluid | Air |
|---|---|
| Max. pressure | 1.0 MPa (145 psi) |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Capacity of drain bowl | 108 cc |
| Bracket | Included |
| Weight | 950 g |
Specifications follow the official AirTAC GAFR catalogue (pages 235-236). Air must not freeze in the unit. No gauge is supplied with this model — the gauge connection on a GAFR500 is 1/4" if you add one. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR50020LNWK
| GAFR500 | GA500 series filter & regulator — sets the port range, drain-bowl capacity and weight. |
|---|---|
| (blank) | Bowl material: PC. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 20 | Port size 3/4". This body offers 20 = 3/4". |
| (blank) | Drain: Semi-auto drain + manual drain. |
| L | Lower pressure type — 0.15 - 0.4 MPa (20 - 58 psi). This body offers Standard (S) or Lower pressure (L). |
| (blank) | Mounting bracket included. |
| N | No pressure gauge; 1/4" gauge connection. |
| W | Filtering grade 5 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| K | Reverse-flow (reflux) valve attached. |
The filter and the regulator are ONE body here — there is no separate GAF filter or GAR regulator part to assemble. Need lubrication downstream too? Add a lubricator by ordering the matching GAFC500-20 F.R.L. combination instead.
Size Class & Flow Envelope
- GAFR2001/8"-1/4" · 2000 L/min
- GAFR3001/4"-1/2" · 3500 L/min
- GAFR4003/8"-1/2" · 7000 L/min
- GAFR5003/4" · 8000 L/min
- GAFR6003/4"-1" · 12000 L/min
Figures are the end of the flow curve plotted in the AirTAC catalogue at 0.7 MPa inlet pressure — a sizing envelope for comparing bodies, not a rated flow. Read the catalogue curve for a real duty point. Outlet pressure falls as flow rises, so size a body with headroom above your peak demand.
| This model | GAFR500 · 3/4" · curve to 8000 L/min |
|---|---|
| One size down | GAFR400 |
| One size up | GAFR600 (curve to 12000 L/min) |
| Add a lubricator | GAFC500-20 (F.R.L. combination) |
Where the Airtac GAFR Adjustable Filter Regulator GAFR50020LNWK Is Used
Precision valve control
Feed a bank of precision pneumatic valves that require stable, low-pressure air at 0.15-0.4 MPa. The 5 um element protects fine internal passages, while the balanced regulator holds the setpoint as shop pressure fluctuates.
Machine header supply
Mount this 3/4in unit on a machine header feeding multiple actuators. The 108 cc bowl handles condensate from a wet line, and the semi-auto drain purges automatically while retaining a manual backup for maintenance checks.
Instrument air bench
Use it on a test bench where instruments need clean, regulated air below 0.4 MPa. The 5 um element and the self-locking knob keep the set pressure stable even when the bench vibrates.
Is the Airtac GAFR Adjustable Filter Regulator GAFR50020LNWK the Right Air-Prep Unit?
Choose the GAFR500 body when you need 3/4in ports and a flow envelope plotted to 8000 L/min at 0.7 MPa inlet; if you need less capacity, the GAFR400 offers 1/2in ports with a 7000 L/min envelope at the same inlet condition. The PC bowl suits general shop air, while the 5 um element provides finer filtration than the standard 40 um grade at the cost of more frequent element service. This model ships with the mounting bracket included, a semi-auto plus manual drain, and the lower-pressure regulator capped at 0.4 MPa, so confirm your machine never needs more than that. The PT thread carries an MPa/psi gauge scale, and the reflux valve is present as a specified option. If your line needs oil downstream, order the matching GAFC500-20 combination instead. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 0.4 MPa top of the regulated range.
Quick checklist
- ✓ Body size for your peak flow (3/4" here)
- ✓ Standard 0.9 MPa or lower-pressure 0.4 MPa
- ✓ Bowl material: PC (blank), Metal (C), Nylon (N)
- ✓ Drain: semi-auto + manual, or automatic
- ✓ Element 40 µm or 5 µm
- ✓ Bracket kept or removed (J); add a lubricator = GAFC
Installation & Maintenance Notes
- check Install with the airflow arrow: IN to OUT, gauge/knob accessible.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Set pressure with the pressed-in self-locking knob; pull to adjust, press to lock.
- check Drain condensate before the 108 cc bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
- check Support the 950 g unit on its bracket, not on the tubing.
This is a filter and regulator only — it delivers filtered, pressure-set air with no added oil. If a downstream tool needs lubrication, add a separate lubricator or order the GAFC500-20 combination; do not expect an oil mist from this unit.
Airtac GAFR Adjustable Filter Regulator GAFR50020LNWK FAQ
It is a filter & regulator with a 3/4in port, working pressure 0.15-0.4 MPa (20-58 psi), maximum pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C, 5 um filtering grade, 108 cc drain bowl, and 950 g weight. The gauge connection is 1/4in, and the unit has a semi-auto plus manual drain.
The L code sets the regulator to 0.15-0.4 MPa, which suits applications that must not exceed 0.4 MPa. The N code after the port means no gauge is supplied, so you cannot read the outlet pressure unless you add one to the 1/4in gauge connection. The reflux valve (K) is fitted as an ordering difference.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Air-Preparation Units
Request a Quote for Airtac GAFR Adjustable Filter Regulator GAFR50020LNWK
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.