The AirTAC AirTAC GFR300C10AF2G Filter Regulator G3/8 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 GFR300C10AF2G is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at your setpoint. This size 300 unit is threaded G3/8 (BSPP), drains condensate automatically, filters to the standard 40 um grade, and comes with an embedded square gauge scaled in psi plus a mounting bracket. The regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), the unit accepts up to 1.0 MPa (145 psi) inlet, and it operates from -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options for manual or differential-pressure draining, a 5 um filter element (code W), square or round gauges scaled in MPa, psi or bar, and G or NPT threads in place of the PT standard. Flow figures are published as curves rather than a single rating, so ask us to confirm sizing and full datasheet details for your application before ordering.
| Model | AirTAC GFR300C10AF2G Filter Regulator G3/8 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) |
Feeding clean, regulated air to pneumatic clamps and tool-change cylinders on a CNC machining centre, with the 40 um element protecting directional valves from water and swarf carryover.
Regulating supply pressure to carton-forming and sealing cylinders on a packaging line, where the automatic drain copes with condensate build-up in humid summer compressed air.
Supplying diverters, stoppers and pusher cylinders on a warehouse sorting conveyor, holding a stable setpoint so gate timing stays repeatable through the shift.
Size 300 with a 3/8 in port sits mid-range in the GFR line; step down to 200 or up to 400/600 depending on the flow your line needs - we confirm exact flow from the datasheet curves on request. The automatic drain on this unit handles condensate without daily attention; manual-drain and differential-pressure-drain variants suit monitored or low-duty installations. The standard 40 um element can be specified as a 5 um element (code W) where finer filtration matters. The square gauge here is scaled in psi; MPa or bar scales and an external round gauge are order options. Thread is G (BSPP); PT is the standard and NPT is an order option. A mounting bracket is included.
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.
Flow for the GFR300 is published as curves, not a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow and the full datasheet figures for this model on request before you order.
The A in this model code specifies an automatic drain, which expels collected condensate from the bowl without operator attention. Manual-drain and differential-pressure-drain versions of the GFR300 are also catalogue options if you prefer to control draining yourself.
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.