The AirTAC GFR300C15AC2K AirTAC Filter Regulator PT1/2, 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 GFR300C15AC2K is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady, in a single body. This size 300 unit has a PT1/2 (1/2 in) port, a 40 um standard filter element, an automatic drain that ejects collected condensate without manual attention, a round pressure gauge reading in psi, and a built-in reverse (check) valve. The bowl on this 300 size is polycarbonate. Maximum inlet pressure is 1.0 MPa (145 psi), the set-point is adjustable from 0.15 to 0.9 MPa (20-130 psi), and the unit operates from -5 to 70 C (non-freezing). A mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, G (BSPP) and NPT thread options, manual or differential-pressure drains, a 5 um element (code W), square or round gauges in MPa, psi or bar scales, and a low-pressure type. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C15AC2K AirTAC Filter Regulator PT1/2, 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) |
Clean, regulated air for impact wrenches, air clamps and fastening tools fed from 1/2 in ring-main drops along the assembly line.
Supplies diverters, pushers and case-sealing cylinders on packaging conveyors, with the automatic drain handling condensate between shifts.
Steady pressure for fixture clamps and tool-change cylinders on machining cells, with the check valve helping hold the downstream circuit.
Size and port step up together: 200, 300, 400 and 600 cover ports from 1/8 to 1 in, so choose the size whose flow curve covers your demand at your working pressure - we can check that against the datasheet on request. Choose the drain to suit access: automatic (this model) suits enclosed or infrequently attended installations, manual suits attended points, and differential-pressure is the default. The 40 um element is standard; specify code W for 5 um where finer filtration is needed. An embedded square gauge is standard and an external round gauge is optional, in MPa, psi or bar scales - this unit carries a round gauge reading psi. Thread is PT as standard, with G (BSPP) and NPT as order options. A bracket is included; code J omits it.
Because AirTAC publishes flow only as curves and not as a single rated figure, ask us to confirm sizing 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 this series as curves rather than a single rated figure, so there is no one l/min or SCFM number we can honestly quote. Tell us your working pressure and air demand and we will confirm the sizing from the datasheet on request.
The trailing K in the code means a reverse (check) valve is fitted; the same model without K omits it. Other decodable choices on this unit are the automatic drain (A), the round psi gauge (C2), the 40 um standard element (no W), the PT thread and the included bracket.
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.