The AirTAC GFR300C08AJC2WK AirTAC Filter Regulator 1/4 in PT 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 GFR300C08AJC2WK is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration is built for 1/4 in PT ports, carries the 5 um filter element instead of the 40 um standard, drains condensate automatically, and is fitted with an external round gauge reading in psi plus a reverse/check valve. No mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The bowl on this size-300 unit is polycarbonate.
This is a genuine AirTAC part. The GFR series is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, in PT, G (BSPP) or NPT thread, with manual, automatic or differential-pressure drains, 40 um or 5 um elements, embedded square or external round gauges in MPa, psi or bar scales, and optional check valves and brackets. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08AJC2WK AirTAC Filter Regulator 1/4 in PT |
|---|---|
| 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) |
Supplies cleaned, regulated air to the clamp cylinders on a machining-cell fixture. The 5 um element protects the clamp valves and cylinders, the regulator holds clamp pressure steady, and the check valve helps the clamps hold if the shop supply dips.
Feeds the sealing jaws and product-push cylinders on a carton-forming line. The automatic drain clears condensate across continuous shifts without an operator opening the bowl, keeping water out of the sealing station.
Prepares the air supply for diverter gates and stopper cylinders along a sorting conveyor. The 5 um grade guards the solenoid valves that cycle the gates, and the regulator keeps gate timing consistent by holding a stable pressure.
Pick the size and port step against the flow your line needs: this size-300 unit with a 1/4 in PT port sits in the middle of the GFR range, which runs from size 200 (1/8-1/4 in) up to size 600 (1 in). This unit is specified with the 5 um element rather than the 40 um standard - choose 5 um where finer particulate protection matters downstream, 40 um for general-purpose air prep. The automatic drain handles condensate without daily attention; manual and differential-pressure drains are the alternatives in the series. The round gauge reads psi, with MPa and bar scales available, and the fitted check valve helps hold downstream pressure if the supply dips. Thread is PT as standard, with G (BSPP) and NPT available to order, and brackets are optional (not fitted here). Flow is published as curves, not a single rating, so 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 GFR300 flow as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure and air demand and we will confirm the datasheet flow curve and check the sizing of this 1/4 in PT unit for your application before you order.
The A in the code means this filter regulator drains collected condensate automatically, which suits lines that run unattended or across multiple shifts. Manual-drain versions need regular attention, and the differential-pressure drain is the series default. All three drain types are available across the GFR300 range.
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.