
The AirTAC Airtac GAC F.R.L. Unit GAC500N20ASK is a genuine three-unit F.R.L. combination — a filter, a pressure regulator and a lubricator pre-assembled on one bracket with quick mounting clamps. It has 3/4" ports, a 40 µm filter element and regulates 0.15 - 0.9 MPa (20 - 130 psi).
Delivering cleaned, regulated and lubricated air for demanding pneumatic setups, this GAC500N20ASK assembly integrates a filter, regulator and lubricator on a single L-shape bracket. The 3/4in port serves as the gateway for standard 0.15-0.9 MPa (20-130 psi) operation, catching 40 um particulates while a fitted circular gauge displays the set pressure in MPa/psi. Its 2460 g mass dictates a firm panel or frame mount rather than relying on downstream tubing for support.
Air flows sequentially through the filter, regulator and lubricator, ensuring oil mist is introduced strictly downstream so the regulator seat stays clean. This specific unit pairs a nylon bowl with an automatic drain, clearing condensate without an operator present. The reverse-flow (reflux) valve is fitted, shown in the catalogue as a distinct pneumatic symbol, and the assembly uses standard PT threads.
| Model | Airtac GAC F.R.L. Unit GAC500N20ASK |
|---|---|
| Series | GAC500 F.R.L. combination |
| Port size | 3/4" (PT thread) |
| Filtering grade | 40 µm |
| Pressure range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Type | Standard |
| Bowl material | Nylon |
| Drain type | Automatic 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 |
| Capacity of oil bowl | 225 cc |
| Recommended lubricant | ISO VG 32 or equivalent |
| Weight | 2460 g |
Specifications follow the official AirTAC GAC catalogue (pages 216-217). Air must not freeze in the unit. The fitted circular gauge reads in MPa / psi, set by the PT thread code.
| GAC500 | GA500 series F.R.L. unit — sets ports, bowl capacity and weight. |
|---|---|
| N | Bowl material: Nylon. Available on this body: PC (blank), Metal (C), Nylon (N). |
| 20 | Port size 3/4". This body offers 20 = 3/4". |
| A | Drain: Automatic drain. |
| S | Standard type — 0.15 - 0.9 MPa (20 - 130 psi). This body offers Standard (S) or Lower pressure (L). |
| (blank) | Circular pressure gauge fitted. |
| (blank) | Filtering grade 40 µm. |
| (blank) | PT thread; gauge scale MPa / psi. |
| K | Reverse-flow (reflux) valve attached. |
Constituent units, orderable separately as spares: GAF500-20 filter, GAR500-20 regulator, GAL500-20 lubricator — all three share this body and port.
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 | GAC500 · 3/4" · curve to 7000 L/min |
|---|---|
| One size down | GAC400 |
| One size up | GAC600 (curve to 12000 L/min) |
| Build order | Filter → bracket → regulator → lubricator |
Feeds a multi-station manufacturing cell where the 3/4in port and 7000 L/min flow envelope sustain high-cycle pneumatic presses and robotic grippers.
Conditions air for heavy-duty case erectors and pallet wrappers, relying on the automatic drain to handle moisture during continuous shifts.
Prepares main plant air for a row of machining centers, using the 40 um element to protect precision valves from shop debris.
Choose this 3/4in body when a machine header requires substantial air preparation, stepping up from the GAC400 which offers a 6000 L/min plotted flow envelope at 0.7 MPa inlet versus the 7000 L/min curve available here. The nylon bowl keeps the build light while handling the same 1.0 MPa maximum pressure as metal or PC alternatives. Because the lubricator introduces oil mist downstream, select a separate filter-regulator if your line must remain oil-free. Should a component fail, order the GAF500-20, GAR500-20 and GAL500-20 spares individually. Stepping up from the GAC400, this unit provides roughly 1.2x the flow envelope capacity of its smaller neighbor.
Quick checklist
The lubricator adds an oil mist downstream of the regulator. If any part of the line must stay oil-free, use a filter-regulator instead of an F.R.L. combination on that branch.
This standard type unit operates at 0.15-0.9 MPa (20-130 psi) with a max pressure of 1.0 MPa (145 psi) and a 1.5 MPa (215 psi) proof pressure. It handles temperatures from -5 to 70 C, uses a 108 cc drain bowl and a 225 cc oil bowl, weighs 2460 g, and requires ISO VG 32 lubricant.
The K in the part number indicates a reverse-flow (reflux) valve is fitted, which the catalogue illustrates as a separate pneumatic symbol on its own page. Additionally, the A specifies an automatic drain that actively expels condensate from the 108 cc bowl without requiring manual intervention.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT) and destination. We confirm price, stock and lead time — usually within 7-8 hours.