The AirTAC Airtac GFR Filter Regulators GFR30010LF2WGK 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 differential-pressure 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 combines water and particulate filtration with pressure regulation in a single body, and this configuration, the GFR30010LF2WGK, is built for a 3/8 in (G3/8) port with G thread. It carries the W-grade 5 um filter element for finer particle removal than the standard 40 um grade, a differential-pressure drain that bleeds accumulated condensate as the pressure differential across the element rises, and a built-in reverse/check valve that holds downstream pressure when the upstream supply is lost. It is the low-pressure (L) type with a factory-fitted embedded square gauge reading in psi, and it includes a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in up to 1 in, manual, automatic or differential-pressure drains, 40 um or 5 um elements, and gauge options in MPa, psi or bar scales. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | Airtac GFR Filter Regulators GFR30010LF2WGK |
|---|---|
| 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 | Differential-pressure 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". |
| (blank) | Drain: Differential-pressure 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) |
Feeding filtered, regulated air to pneumatic screwdrivers, clamps and small cylinders on an assembly bench, with the check valve holding the circuit's set pressure if the shop supply drops.
Conditioning the air supply to carton-forming and sealing stations on a packaging line, where the 5 um element protects directional valves and the square gauge lets operators verify line pressure in psi at a glance.
Regulating supply to low-pressure pneumatic circuits in a plant process area, where the low-pressure type regulator, fine filtration and differential-pressure drain keep the circuit clean and stable without daily drain attention.
Size 300 with a 3/8 in port sits in the middle of the GFR range; step up to size 400 or 600, or down to size 200, according to the flow your line needs - we can check the published flow curves against your demand before you order. This unit is the low-pressure (L) type, so its regulation range differs from the standard GFR; the exact range is not published in the sheet we work from, so confirm it with us if your setpoint is critical. The 5 um (W) element suits circuits that need finer filtration than the 40 um standard; the differential-pressure drain is the default and needs no operator action, while automatic and manual drains are orderable alternatives on other configurations. The embedded square gauge here reads in psi; MPa and bar scales and an external round gauge are available. G thread is fitted on this code; PT is the standard thread and NPT is also a catalogue option. A mounting bracket is included.
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 number, so we do not quote a rated flow, Cv or SCFM figure for this unit. Tell us your port size, working pressure and air demand and we will confirm the sizing against the datasheet curves on request before you order.
The L in the code marks this as the low-pressure regulator type rather than the standard GFR regulation; its exact range is not published in the sheet we work from, so confirm it with us if your setpoint matters. The trailing K means a reverse/check valve is fitted, which holds downstream pressure when the upstream supply is interrupted. The W marks the 5 um filter element instead of the 40 um standard.
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.