The AirTAC GFR300C08AJC2G AirTAC Filter Regulator G1/4, 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 See datasheet 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 GFR300C08AJC2G is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built for 1/4 in lines with G (BSPP) thread, carries the standard 40 um filter element, and drains condensate automatically, so the bowl empties itself while the unit is under pressure. The fitted round gauge reads in psi, the regulator is the standard type with an adjustment range of 0.15-0.9 MPa (20-130 psi), and the unit is supplied without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The size 300 bowl is polycarbonate (PC).
This is a genuine AirTAC part. The GFR filter-regulator family spans four sizes (200, 300, 400 and 600) with ports from 1/8 in to 1 in, and is available with manual or differential-pressure drains as well as automatic, a 5 um element in place of the standard 40 um, square embedded or round external gauges in MPa, psi or bar scales, a reverse/check valve, and a mounting bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08AJC2G AirTAC Filter Regulator G1/4, PSI Gauge |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT 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 — factory standard, Factory standard 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. |
|---|---|
| C0 | Port size See datasheet. 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). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C0 (two-unit set) |
Feeds clean, regulated air to tool-changers, clamps and blow-off points on a CNC machining cell, with the automatic drain keeping condensate out of the 1/4 in drop line without daily attention.
Sits at the head of a bottling or cartoning conveyor run, filtering plant air and holding a steady psi setting for the diverters, pushers and vacuum grippers that handle product downstream.
Prepares air for the small cylinders and air tools at a manual assembly station, where the 40 um element protects seals and the round psi gauge lets operators verify set pressure at a glance.
Start with the port step: this unit is the size 300 body with a 1/4 in port, one step above the 200 series and below the 400 and 600 bodies - pick the size whose flow curve covers your line, and we will confirm the curve figures on request before you order. On this unit the drain is automatic; the same series is also offered with a manual drain or a differential-pressure drain, and the regulation range differs by drain type (automatic and differential-pressure: 0.15-0.9 MPa / 20-130 psi; manual: 0.05-0.9 MPa / 7-130 psi). The standard element is 40 um; specify the W code if your application needs the 5 um grade. The fitted round gauge reads psi; square embedded gauges and MPa or bar scales are alternatives. Thread is G (BSPP) here, with PT as the catalogue standard and NPT orderable - all are specifications, not delivery terms. A mounting bracket is optional; this unit ships without one.
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 GFR300 flow performance as curves, not as a single rated number, so there is no one l/min or SCFM figure we can quote honestly. Send us your line pressure, downstream consumption and acceptable pressure drop, and we will confirm the flow figures from the datasheet for your application before you order.
The A code in GFR300C08AJC2G means the bowl drains condensate automatically, which suits unattended or hard-to-reach installations. The GFR300 series is also available with a manual drain or a differential-pressure drain; note that the regulator adjustment range depends on the drain type - 0.15-0.9 MPa (20-130 psi) with automatic or differential-pressure drain, and 0.05-0.9 MPa (7-130 psi) with manual drain.
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.