The AirTAC GFR30008JC2GK AirTAC Filter Regulator, G1/4, Round 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 GFR30008JC2GK is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body, so one component does both jobs in the air-preparation position. This configuration is threaded G1/4 (1/4 in), carries the standard 40 um filter element, and drains condensate by differential pressure, so the bowl bleeds automatically as flow passes through it with no drain fitting to operate. The regulator is the standard type with a 0.15-0.9 MPa (20-130 psi) adjustment range, a round pressure gauge scaled in psi is fitted, and a reverse/check valve is built in to hold the downstream setting if the supply dips. It ships without a mounting bracket (code J).
This is a genuine AirTAC part from the G-series filter-regulator line, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR30008JC2GK AirTAC Filter Regulator, G1/4, Round 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 — round, 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. 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. 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. |
| 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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeding a workholding clamp circuit on a machining centre: the GFR30008JC2GK strips water and chips-laden particulate from the shop air, then holds the clamp pressure steady at the setpoint while the round psi gauge gives the operator a direct readout at the machine.
Air preparation for the stop-and-divert cylinders along a packaging conveyor: one G1/4 filter regulator per zone cleans the supply, the reverse/check valve keeps zone pressure stable if the main header dips, and the differential-pressure drain keeps condensate off the valves without daily manual draining.
Point-of-use conditioning ahead of air-operated spray and coating equipment: the 40 um element catches pipe scale and water before the atomising air, and the regulator lets the finisher dial in and hold a consistent supply pressure for an even spray pattern.
Start with the port step: this unit is size 300 with a G1/4 connection; if your line needs more or less flow capacity, the same function is available in sizes 200, 400 and 600 with ports from 1/8 in up to 1 in. For the drain, differential pressure (this unit) suits lines with steady flow; choose automatic (code A) for intermittent-flow lines that still need hands-off draining, or manual (code M) where you want to drain on demand. Filtration is 40 um as fitted here; specify W for the 5 um element if downstream valves or cylinders need finer protection. Gauges can be the embedded square type or an external round gauge, in MPa, psi or bar scales - this unit has a round psi gauge. Thread is G (BSPP) here; PT is the standard thread and G or NPT are order options. Brackets are optional (code J omits it). One honest note: flow for this series is published as curves, not a single rated figure, so send us your application 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. 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 capacity curves rather than a single rated figure, so we do not quote one number for this model. Tell us your line pressure, set pressure and the air demand of your equipment, and we will confirm the sizing against the datasheet curves on request before you order.
In this configuration, code C2 fits an external round gauge scaled in psi (the embedded square gauge is the standard alternative, also available in MPa or bar scales), and code K fits a reverse/check valve that helps hold the downstream setting if the upstream supply dips. The drain is differential-pressure type: condensate is discharged from the PC bowl automatically as air flows through, so there is no manual drain to operate - though automatic (A) and manual (M) drains are available in the same series.
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.