The AirTAC GFR30008ALC3TK AirTAC Filter Regulator NPT1/4 Low-Pressure is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/4" ports, a automatic drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR300 series combines water and particulate filtration with pressure regulation in a single compact body, so one 1/4-inch (NPT) connection handles both jobs in your air-prep stack. This configuration, GFR30008ALC3TK, is the low-pressure type with an automatic drain that bleeds condensate from the PC bowl without manual attention, a 40 um standard filter element, a fitted reverse/check valve, and a round pressure gauge reading in bar. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. A mounting bracket is included.
This is a genuine AirTAC part from the GFR300 size family, which is also available in other port sizes, drain types, filter grades (40 um standard, 5 um optional), gauge styles and scales, and with G(BSPP) or NPT threads in place of the PT standard. Flow figures for this series are published as curves rather than a single rated number, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR30008ALC3TK AirTAC Filter Regulator NPT1/4 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, bar scale |
| Reflux valve | Fitted (reverse flow permitted) |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR300 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
On an assembly fixture that holds workpieces with air clamps running below standard line pressure, this low-pressure-type filter regulator cleans the supply, holds the set pressure and its check valve helps hold the circuit if the upstream air drops.
Feeding the cylinders and air grippers that push, divert and sort cartons on a packaging conveyor, the unit removes water and 40 um particulate from the shop air and gives operators a bar gauge and an adjustable setpoint at the machine.
Mounted on the bracket at a machine's air inlet, the automatic drain clears collected condensate during shifts without operator attention, keeping the downstream valves and cylinders on the line supplied with clean, regulated air.
Start with the port size: the 300 size in a 1/4-inch connection suits lines built around 1/4-inch piping, and stepping up or down a size changes both the port and the flow capacity, so match the size to your expected air demand. Choose the drain to suit access: automatic (as here) empties the bowl unattended, manual needs an operator, and differential-pressure draining is the catalogue default. Pick the filter grade for the job: 40 um is the standard element, while the W option gives 5 um for finer protection. Gauge style and scale are selectable (embedded square or external round; MPa, psi or bar scales - this unit carries a round bar gauge). Thread is PT as standard with G(BSPP) and NPT as order options, and a bracket can be included or omitted.
One honest note before you order: AirTAC publishes flow for this series as curves, not as a single rated figure, so send us your application details and we will confirm the sizing against the datasheet before you commit.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR300 series as performance curves rather than a single rated figure, so there is no one number we can honestly quote. Tell us your application and line conditions and we will confirm the relevant flow and datasheet figures on request before you order.
The A in the code selects the automatic drain, which expels condensate from the PC bowl on its own - useful where the unit is mounted in a spot nobody checks daily. The alternatives in this series are manual drain (you open it yourself) and the differential-pressure drain, which is the catalogue default. Any of the three can be ordered on the same GFR300 body.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.