The AirTAC GFR300C15AJC2K AirTAC Filter Regulator PT1/2 with 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 GFR300C15AJC2K is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate down to 40 um and holds your downstream setting anywhere in the 0.15-0.9 MPa (20-130 psi) adjustment range. This configuration is a size 300 unit with a PT1/2 port, an automatic drain that bleeds collected condensate without anyone opening the bowl, a round external gauge reading in psi, and a reverse/check valve that holds the downstream pressure if the upstream supply drops. The polycarbonate bowl suits non-freezing compressed-air service, and the unit is ordered without a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8" to 1", drain choices (differential-pressure, automatic or manual), a 5 um filter option (code W), gauge scales in MPa, psi or bar, and G or NPT thread options alongside the PT standard. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet for your application before ordering.
| Model | GFR300C15AJC2K AirTAC Filter Regulator PT1/2 with 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. |
|---|---|
| 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 filtered, regulated air to the directional valves and pneumatic clamps on a machining centre, with the check valve holding the clamp circuit if the shop supply dips mid-cycle.
Conditioning the air at a spray booth or powder-coating line, where the 40 um filter strips water and pipe scale ahead of the guns and the regulator pins a steady atomising pressure.
Supplying the cylinders and vacuum generators on a packaging or case-sealing line, with automatic drain keeping condensate out of the valves on shifts that run without an operator at the unit.
Start with the port and size: this size 300 unit carries a PT1/2 port, one step up from 3/8" and one below 3/4". Match the port to your piping and let the required air demand guide whether 300 is the right size step - because flow is published as curves, not a single rating, ask us to confirm the sizing against your consumption before ordering. Next choose the drain: automatic (this unit) suits points that run unattended; manual drain suits stations someone visits routinely; differential-pressure is the default. Filter grade is 40 um standard here; specify code W for 5 um where finer particulate removal matters. The gauge on this unit reads psi; MPa and bar scales are available, and an embedded square gauge is the alternative to this external round gauge. Thread is PT as standard, with G (BSPP) and NPT as order options, and brackets can be added if this unit was ordered 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 flow for the GFR300 as curves rather than a single rated figure, so we do not quote one number. Tell us your working pressure and air consumption and we will confirm the flow from the datasheet for this PT1/2 unit before you order.
The automatic drain on this unit bleeds collected condensate from the bowl on its own, which suits unattended or hard-to-reach positions. If the unit sits at a station an operator visits anyway, the manual drain version does the same job by hand, and the differential-pressure drain is the standard default.
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.