The AirTAC GFR300C08AJC2WTK AirTAC Filter Regulator NPT 1/4 in 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 GFR300C08AJC2WTK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is sized for 1/4 in NPT ports, filters to 5 um (the fine grade; 40 um is the standard element), drains condensate automatically, and carries a round gauge reading in psi. A reverse (check) valve is fitted, and no mounting bracket is included with this code.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge styles and scales, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR300C08AJC2WTK AirTAC Filter Regulator NPT 1/4 in |
|---|---|
| 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Feeding filtered, regulated air to the gripper and stopper cylinders on a beverage bottling line: the 5 um element guards fine sealing valves against particulate, while the automatic drain clears condensate between shifts without operator attention.
Supplying regulated air to the diverter gates and pusher cylinders on a parcel-sortation conveyor. The 1/4 in NPT port suits compact valve manifolds, and the fitted check valve blocks backflow toward the supply side.
Regulating air to pipetting and plate-handling modules in a lab automation cell, where the round psi gauge gives technicians a familiar local readout and the automatic drain suits equipment that runs unattended overnight.
The real choices on this family are the size and port step, the drain, the filter grade, the gauge and the thread. Step up from the 300 body and its 1/4 in port when your circuit needs more flow; the 400 and 600 sizes take 3/8 in up to 1 in ports. With the automatic drain fitted here, the regulating range is 0.15-0.9 MPa (20-130 psi); manual-drain variants open the low end to 0.05-0.9 MPa (7-130 psi). The 5 um element (code W) suits finer air quality than the standard 40 um element. Gauges come as the embedded square type or an external round gauge, in MPa, psi or bar scales; this unit carries a round psi gauge. The thread here is NPT; PT is the standard and G (BSPP) is also an order option. Flow is published as curves, not 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 the GFR300 as curves rather than a single rated figure, so we do not quote a number here. Send us your required flow and working pressure and we will confirm the sizing from the datasheet before you order.
The automatic drain ejects collected condensate without anyone opening the drain, which suits unmanned cells and hard-to-reach mounting positions. Manual-drain versions put drain timing under operator control and widen the low end of the regulating range to 0.05 MPa (7 psi); this automatic-drain unit regulates 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.