Airtac GAFR Adjustable Filter Regulator GAFR50020LW
The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR50020LW 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 gaugeCircular, MPa / psi
- 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 GAFR50020LW
The GAFR50020LW is a filter and pressure regulator combined into a single body, so incoming air is spun to separate liquid water and solid particles before the balanced regulator holds a steady outlet pressure. This 3/4in unit works in the lower pressure band of 0.15-0.4 MPa (20-58 psi) and uses a 5 um element to trap fine particles for sensitive equipment.
Weighing 950 g with a 108 cc condensate bowl, this size class suits machine headers or multi-station lines where a compact footprint matters. The pressed-in self-locking knob resists set-pressure drift from vibration, and the circular gauge with magnifier shows the MPa/psi scale directly on the unit.
Airtac GAFR Adjustable Filter Regulator GAFR50020LW Technical Specifications
| Model | Airtac GAFR Adjustable Filter Regulator GAFR50020LW |
|---|---|
| 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. The fitted circular gauge reads in MPa / psi, set by the PT thread code. This unit filters and regulates only; it does not add lubrication.
Model Code: Airtac GAFR Adjustable Filter Regulator GAFR50020LW
| 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. |
| (blank) | Circular pressure gauge fitted. |
| W | Filtering grade 5 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| (blank) | No reverse-flow valve. |
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 GAFR50020LW Is Used
Machine header supply
Feed a 3/4in manifold serving multiple pneumatic actuators on a production machine, where the lower pressure range protects delicate tooling from over-pressure.
Instrument air for sensors
Use the 5 um element to clean air before precision valves or sensors that need finer particle removal, while the regulator keeps the supply steady at a low setpoint.
Test bench air
Supply a lab or test bench with filtered air at a fixed low pressure, relying on the self-locking knob to hold the setting during repeated cycles.
Is the Airtac GAFR Adjustable Filter Regulator GAFR50020LW the Right Air-Prep Unit?
Choose the GAFR500 body when you need a 3/4in port and a flow curve plotted to 8000 L/min at 0.7 MPa inlet; step down to the GAFR400 (3/8in-1/2in, 7000 L/min envelope) for lighter lines or up to the GAFR600 (3/4in-1in, 12000 L/min envelope) for a larger header. The L type caps regulation at 0.4 MPa, so confirm your machine never needs more than that; the standard S type (0.15-0.9 MPa) is the alternative. This model keeps the mounting bracket, fits the PC bowl, and uses the 5 um element for finer filtration at the cost of more frequent element service. The semi-auto plus manual drain is fitted, so you can drain manually or let the semi-auto mechanism purge when pressure drops. If the 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 GAFR50020LW FAQ
The GAFR50020LW is a filter & regulator with a 3/4in port, working pressure range 0.15-0.4 MPa (20-58 psi), max pressure 1.0 MPa (145 psi), proof pressure 1.5 MPa (215 psi), temperature range -5 to 70 C, 5 um element, 108 cc drain bowl, and weight 950 g. It has a semi-auto plus manual drain and a fitted gauge with MPa/psi scale.
The L type limits the regulated outlet to a maximum of 0.4 MPa (58 psi), which is about 44% of the standard type's 0.9 MPa ceiling. Choose it only if your application never needs more than 0.4 MPa; otherwise select the standard S type for a wider range.
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 GAFR50020LW
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.