The AirTAC GFR30010ALF2WGK AirTAC Low-Pressure Filter Regulator G3/8 is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" 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 GFR30010ALF2WGK is a low-pressure filter regulator in the GFR300 series: one body that removes water and particulate down to 5 um and regulates downstream air pressure for the circuit it feeds. This configuration has a G3/8 port with G thread, an automatic drain that bleeds collected condensate from the PC (polycarbonate) bowl without manual attention, an embedded square gauge reading in psi (an external round gauge is available as an option), a reverse/check valve fitted, and a mounting bracket included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. As a low-pressure (L) type unit, its exact regulation range is not published in the catalogue - we confirm it on request.
This is a genuine AirTAC part. The GFR300 sits in the GFR size range of 200, 300, 400 and 600, with port sizes stepping up from 1/8 in to 1 in, drain choices of differential-pressure, automatic or manual, 40 um standard or 5 um (W) filtration, and PT, G or NPT threads to order. Flow is published as curves rather than a single rating, so ask us to confirm flow and datasheet figures against your application before ordering.
| Model | GFR30010ALF2WGK AirTAC Low-Pressure Filter Regulator G3/8 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (G (BSPP) thread) |
| Filtering grade | 5 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 — square, psi 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. |
|---|---|
| 10 | Port size PT3/8". 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Placed at the drop to a spray gun manifold, the 5 um element keeps water and fine particulate out of the finish while the regulator holds a steady low supply pressure to the guns and the automatic drain clears condensate between shifts.
Feeding clamping cylinders on a CNC fixture circuit, the unit filters the shop air to 5 um, regulates it to the low setting the clamps require, and the psi gauge gives the operator a direct reading at the cell.
On a packaging line where air jets blow debris off bottles before filling, this filter regulator conditions the jet supply - clean 5 um air at a stable low pressure - with the check valve holding the circuit if upstream supply dips.
Step through the GFR sizes by the flow your line needs: the 300 size carries a 3/8 in port, and moving to 200 or 400 changes both port and flow capacity - we confirm the curve figures on request. This unit is already specified with the 5 um (W) element; the standard grade is 40 um if coarser filtration suits the circuit. Drain is automatic here; differential-pressure (default) and manual are the other catalogue choices. The fitted square gauge reads psi; MPa or bar scales and an external round gauge are options. Thread is G on this unit - PT is the standard offering, with G and NPT as order options. A bracket is included; a J-code variant omits it. Because flow is published as curves and not a single rating, ask us to confirm sizing against your application before ordering.
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 GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure and the flow your application needs and we will confirm the sizing from the datasheet on request.
This is the L-type low-pressure variant, and its exact regulation range is not published in the catalogue - we confirm it on request. The automatic drain bleeds condensate from the PC bowl by itself as it collects, so no manual draining is needed; manual and differential-pressure drains are the other catalogue options.
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.