The AirTAC GFR30008C3T AirTAC Filter Regulator 1/4 in NPT 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 GFR30008C3T is a filter regulator: it removes water and particulate from compressed air and sets downstream pressure in one compact body. This 300-size unit is threaded 1/4 in NPT, carries the standard 40 um filter element, and drains condensate automatically by differential pressure as the element loads up. The regulator is the standard type, adjustable from 0.15-0.9 MPa (20-130 psi), with a round pressure gauge reading in bar, and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl keeps the condensate level visible at a glance.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600, with port sizes from 1/8 to 1 in, manual or automatic drain options, a 5 um (code W) element upgrade, square or round gauges in MPa, psi or bar scales, and G (BSPP) or NPT thread variants. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30008C3T AirTAC Filter Regulator 1/4 in NPT |
|---|---|
| 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 — round, 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). |
| 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. |
| (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) |
Feeding a bench-mounted pneumatic press or clamping fixture, where the 1/4 in NPT port suits the drop line, the 40 um element keeps valve spools clean, and the bar gauge lets the setter read set pressure directly.
Point-of-use conditioning on a cartoning or wrapping machine, where the filter regulator supplies clean, regulated air to the cylinder and valve bank and the differential-pressure drain handles condensate without operator attention.
Conditioning the instrument-air feed to a control cabinet or pneumatic logic panel, where the round bar gauge gives a clear local pressure reading and the included bracket simplifies mounting inside the enclosure.
Start with the port step: this unit is 1/4 in NPT on the 300 size frame; step up to 400 or 600 if the line needs more capacity, and match the thread to the piping standard in use (PT is the catalogue standard, with G/BSPP and NPT as order options). Choose the drain: differential-pressure (as fitted here) drains only when the element is loaded, automatic drains continuously, and manual suits infrequently attended points. Pick the filter grade: 40 um is standard for general air prep; specify 5 um (code W) where finer protection is needed. Select the gauge style and scale - square embedded or external round, in MPa, psi or bar - and decide whether a reverse/check valve is required. Flow is published as curves, not a single rating, 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 GFR series as curves rather than a single rated figure, so we do not quote a number that could mislead your sizing. Send us your line pressure, set pressure and expected air demand, and we will confirm the datasheet flow curve for this 300-size, 1/4 in NPT unit against your application before you order.
The differential-pressure drain fitted to the GFR30008C3T opens only when the filter element becomes loaded and the pressure drop across it rises, so condensate is discharged without manual attention during normal running. If the unit sits on a line with widely varying flow or you want continuous drainage, an automatic drain (code A) is available; for rarely visited installations a manual drain (code M) is the simpler choice.
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.