The AirTAC GFR30008F3T AirTAC Filter Regulator NPT1/4, Bar 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 AirTAC GFR30008F3T is a 300-size filter regulator that removes water and particulate from compressed air and holds downstream pressure in one compact body. This configuration has a 1/4 in NPT port, a differential-pressure drain that bleeds accumulated condensate whenever the pressure differential across the element is high enough, standard 40 um filtration, and an embedded square gauge scaled in bar so you can read and set output pressure at a glance. The polycarbonate bowl suits the 300 frame, and the mounting bracket is included for panel or wall fixing.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type, 5 um (W) or 40 um filtration, gauge scale, thread form (PT standard, G and NPT as order options) and bracket. Flow is published in the catalogue as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30008F3T AirTAC Filter Regulator NPT1/4, Bar Gauge |
|---|---|
| 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 | 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, bar 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. |
| 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. |
| (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) |
Mounted at the drop feeding directional control valves on a carton-sealing machine, this unit strips water and chips from the shop air and holds a steady set pressure so valve shifting stays consistent through the shift.
Installed ahead of the stopper and pusher cylinders on a bottling conveyor, it keeps condensate out of the cylinder seals and pins the working pressure so product handling stays repeatable as the compressor plant cycles.
Fitted on the air feed to a laboratory test bench, it delivers filtered air at a fixed, gauge-readable pressure to the rig, with the square bar gauge letting an operator verify the set point before each run.
Start with the port step: this unit is the 300 size on a 1/4 in NPT thread, so step up to 400 or 600 if your line needs more flow, or down to 200 for compact drops. Choose the drain to match access: differential-pressure (this unit) needs no attention while flowing, automatic (A) drains on its own, and manual (M) suits positions someone visits regularly. Filtration is 40 um standard; order the W variant for 5 um if downstream valves or instruments need finer air. The square gauge is fitted here with a bar scale; MPa and psi scales and an external round gauge are alternatives. Thread is NPT on this code, with PT as the catalogue standard and G also orderable. A bracket is included; J removes it.
Flow for this series is published as curves, not a single rated number, so send us your application details 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 the GFR300 series as curves in the catalogue, not as a single rated figure, so we do not quote one number. Tell us your application and we will confirm the relevant flow and datasheet figures on request before you order.
The differential-pressure drain (the default, no code letter) vents collected condensate automatically when the pressure drop across the filter element rises, so it suits lines that run steadily. If you prefer, the A code gives a fully automatic drain and the M code a manual drain for positions that are checked 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.