The AirTAC GFR30008F2G AirTAC Filter Regulator G1/4, Square psi Gauge 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 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 GFR30008F2G is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This unit is built with a 1/4 in (G1/4) port, a differential-pressure drain that bleeds accumulated condensate as flow passes through, standard 40 um filtration, and an embedded square gauge scaled in psi so the set pressure is visible at the unit. The polycarbonate bowl suits this 300 size, the standard regulator covers 0.15-0.9 MPa (20-130 psi) of adjustment, 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. The GFR family spans sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, G (BSPP) and NPT thread variants to order, 5 um (code W) filtration where finer air is needed, automatic or manual drain alternatives, and external round gauge options. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30008F2G AirTAC Filter Regulator G1/4, Square psi Gauge |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (G (BSPP) thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 | Not fitted |
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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard 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. |
| (blank) | Filtering grade 40 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. |
| (blank) | No reverse-flow valve (the default). |
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) |
Fitted ahead of a directional-valve manifold on an assembly machine, this unit filters water and scale from the shop air line and holds a steady regulated pressure so valve switching stays consistent shift after shift.
On packaging and sorting conveyors that use air cylinders for pusher gates and diverters, the unit cleans the supply and lets the line set the exact cylinder pressure the gate timing was tuned for.
At a workshop air drop feeding impact wrenches, grinders and blow guns, the unit strips condensate and pipe rust before the tools and lets each station run at the pressure the tool manufacturer specifies.
Size and port step up together: 200, 300, 400 and 600 carry larger ports and more flow, so match the size to the air demand of the circuit rather than to the pipe alone. This 300 unit takes a 1/4 in port in G (BSPP) thread; PT is the standard thread for the series, with G and NPT available as order options. Drain type is a real choice: differential-pressure (fitted here) drains with flow, automatic drains on its own, and manual requires an operator to visit the bowl. Filtration is 40 um standard or 5 um with code W for finer protection. The gauge is an embedded square unit as standard (psi scale here); an external round gauge is optional, with MPa, psi or bar scales. A mounting bracket is included with this unit.
Flow for GFR units is published as curves, not a single rated number, so we cannot quote one figure here. Send us your air demand and line conditions and we will confirm sizing against the datasheet before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for GFR units as curves, not as a single rated figure, so we do not quote a number here. Tell us your air demand and line conditions and we will confirm the flow and sizing from the datasheet on request before you order.
The differential-pressure drain fitted here bleeds condensed water from the bowl automatically as air flows through the unit, with no operator action. If the unit sits where flow is often stopped, an automatic drain (code A) is the better choice; a manual drain (code M) is used where an operator can visit the bowl regularly.
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.