The AirTAC GFR300C10AC2 AirTAC Filter Regulator 3/8" PT Auto Drain 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 AirTAC GFR300C10AC2 is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is sized for 3/8 in PT ports, carries the standard 40 um filter element, and is fitted with an automatic drain, so collected condensate is expelled from the polycarbonate bowl without manual attention - useful on lines that run unattended. The standard regulator covers a setting range of 0.15-0.9 MPa (20-130 psi), and this unit is supplied with an external round gauge reading in psi, plus a mounting bracket. No reverse/check valve is fitted. 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 from the GFR300 size class, one of four sizes (200/300/400/600) in the G-series filter-regulator line, with port sizes from 1/8 to 1 inch, manual or automatic drain options, a 5 um (W) filter grade option, embedded square or external round gauges in MPa, psi or bar scales, and G (BSPP) or NPT threads available to order. Because flow is published as curves rather than a single rating, we confirm the datasheet and flow figures for your application on request.
| Model | GFR300C10AC2 AirTAC Filter Regulator 3/8" PT Auto Drain |
|---|---|
| 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. |
|---|---|
| C1 | 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-C1 (two-unit set) |
Conditioning and regulating the shop-air feed to a machining centre's tool-change cylinders and air-blow nozzles, with the automatic drain coping between cycles and the psi gauge giving operators a readable setpoint.
Filtering and regulating air supplied to the stopper and pusher cylinders along a packaging conveyor line, where the 40 um element protects directional valves and the automatic drain handles condensate on a long run.
Cleaning and setting the pressure of compressed air feeding a lab's pneumatic test bench, with the round psi gauge allowing technicians to read and record the regulated supply directly.
Start with the port and size step: this unit is a GFR300 with 3/8 in PT threads, so check that your line size and expected air demand sit within the GFR300 flow band - and if your demand is near the top of the band, step up to the 400 size rather than undersizing. Choose the drain to match duty: automatic drain (this unit) suits unattended or intermittent-flow installations; manual drain suits attended lines; the differential-pressure default drains only when the pressure drop justifies it. The standard 40 um element is right for general plant air; specify the 5 um (W) grade only where downstream equipment needs finer filtration. Gauge scale is decodable: this unit carries a round gauge in psi; square embedded gauges and MPa or bar scales are alternatives. Thread is PT as standard - order G (BSPP) or NPT variants if your piping requires them, and a J-code variant if you do not want the bracket.
One honest note on sizing: AirTAC publishes flow as curves, not a single rated figure, so we do not quote a flow number here. Ask us to confirm the datasheet and check the curve against your application before ordering.
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 as performance curves rather than a single rated figure, so we do not quote a flow number. Tell us your line pressure and air demand and we will confirm the datasheet and check the curve against your application before you order.
The A in the code means an automatic drain: condensate collected in the polycarbonate bowl is expelled without anyone opening it, which suits unattended or intermittently flowing lines. Manual drain (M) suits attended installations, and the differential-pressure default drains only when the element loading justifies it. Note that with an automatic drain the regulator setting range is 0.15-0.9 MPa (20-130 psi).
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.