The AirTAC GFR300C08C2TK AirTAC Filter Regulator NPT1/4 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 GFR300C08C2TK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This unit is the size 300 frame with a 1/4 in NPT port, the standard 40 um filter element, a differential-pressure drain that bleeds condensate automatically as flow passes through, and a round pressure gauge reading in psi. A reverse/check valve is fitted, and the standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi). Operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options including a 5 um element (code W), automatic or manual drains, square or round gauges with MPa, psi or bar scales, G or NPT threads, and bracket choices. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300C08C2TK AirTAC Filter Regulator NPT1/4 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. |
|---|---|
| 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) |
Filtering and regulating the shop-air feed to a machining centre's tool-change cylinders and pneumatic clamps, with the psi gauge giving the setter a direct reading at the machine and the check valve holding the circuit if the main supply drops.
Conditioning the air feeding conveyor stoppers, diverters and carton-closing cylinders on a packaging line, where the 40 um element protects seals and the regulator holds a steady set pressure as stations cycle.
Serving individual workbench drop legs in an assembly plant: each station gets its own filtered, regulated air at the pressure the tools and air cylinders need, with the differential-pressure drain shedding condensate during normal production flow.
Choose the size and port step against the air consumption of the machine served: this unit is size 300 with a 1/4 in NPT port, and the GFR range steps up through 400 and 600 for larger flows. Drain type is a real choice: differential-pressure (as fitted here) suits steady flow, automatic drain (code A) suits unattended duty, and manual drain (code M) suits intermittent use. The 40 um element fitted here is the standard grade; specify 5 um (code W) where finer particulate removal is needed. Gauge scale is selectable (MPa, psi or bar) and a square embedded gauge can be specified instead of the round external gauge fitted here. Thread is NPT on this unit; G (BSPP) and PT are catalogue alternatives. A bracket is included, and the fitted check valve holds downstream pressure if the upstream supply is lost.
Because flow is published as curves and not as a single rated number, 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 GFR series as curves rather than a single rated figure, so we do not quote a rated l/min, m3/h or SCFM number. Tell us your application and air consumption and we will confirm the flow and sizing from the datasheet on request before you order.
K means a reverse/check valve is fitted, so downstream pressure is held if the upstream supply is lost. This unit has a differential-pressure drain (no drain code): condensate collected in the bowl is bled away automatically as air flows through the unit, so there is no manual draining to remember under normal flow conditions.
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.