The AirTAC GFR300C15AF2GK AirTAC Filter Regulator G1/2 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 GFR300C15AF2GK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit has a G1/2 (BSPP) port, a 40 um filter element, an automatic drain, a standard regulator with a 0.15-0.9 MPa (20-130 psi) adjustment range, an embedded square gauge scaled in psi, and a reverse/check valve fitted. Maximum inlet pressure is 1.0 MPa (145 psi), operating temperature is -5 to 70 C (non-freezing), and the size 300 bowl is polycarbonate.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, PT as the standard thread and G or NPT as order options, with manual, automatic or differential-pressure drains, a 5 um (W) filter grade, square or external round gauges scaled in MPa, psi or bar, and bracket or no-bracket mounting. Flow is published by AirTAC as selection curves rather than a single rating, so ask us to confirm sizing figures and the datasheet for your application.
| Model | GFR300C15AF2GK AirTAC Filter Regulator G1/2 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 pneumatic clamps and tool-change cylinders on a machining center: the 40 um element and automatic drain keep water and debris out of the valves while the regulator holds a steady clamp pressure.
Supplying gripper and diverting cylinders on a bottling conveyor, where the square psi gauge lets line technicians set and verify working pressure at a glance and the auto drain copes with condensate through long shifts.
Regulating air to weld-cell clamps and pneumatic press fixtures on an assembly line; the fitted check valve helps hold the set pressure if the main supply dips, and the automatic drain handles moisture at the point of use.
Step up through sizes 200, 300, 400 and 600 and pick the size whose flow curve covers your demand at your working pressure - we can check the curve against your application before you order. This model has an automatic drain (code A), which removes condensate without daily attention; manual (M) and differential-pressure (blank) versions exist if you prefer scheduled or load-dependent draining. The 40 um element is standard; specify W for the 5 um grade where finer filtration is needed. The square gauge on this unit reads psi; MPa and bar scales and an external round gauge are alternatives. Thread here is G (BSPP) - PT is the standard thread and NPT is an order option. A mounting bracket is included (code J deletes it).
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 selection curves, not as a single rated figure, so we do not quote a number on the page. Tell us your working pressure and air demand and we will confirm the correct size against the datasheet curves before you order.
Code A on this model means the bowl drains condensate automatically, so no daily manual draining is needed. The GFR family is also available with a manual drain (code M) or the differential-pressure drain (no code), and the filter grade can be changed from the standard 40 um to 5 um with code W.
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.