The AirTAC GFR300C08MC1TK AirTAC Filter Regulator NPT1/4 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 GFR300C08MC1TK is a 300-size filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in one compact body. This configuration carries a 1/4 in NPT port, a manual drain on the polycarbonate bowl, the standard 40 um filter element, an external round gauge with MPa scale, and a built-in reverse/check valve; a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR range is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, a choice of drain type (differential-pressure, automatic or manual), an optional 5 um element (code W), gauge style and scale, PT, G or NPT threads, and bracket options. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08MC1TK AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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 a stamping press's air cylinders from the shop main: the 40 um element strips water and pipe scale before they reach the valve stack, while the regulator holds a steady working pressure so stroke force stays repeatable through the shift.
Conditioning the air that drives stoppers, pushers and clamp cylinders on a packaging conveyor. The check valve holds the set pressure if the upstream supply dips, and the manual drain lets an operator bleed accumulated condensate at shift start.
Filtering and regulating the air drop ahead of a spray gun in a body-shop booth: clean, dry air protects the finish from water spots and particulate, and the MPa gauge gives the painter a clear set point at the booth wall.
Start with the port step: this unit is the 300 size with a 1/4 in NPT port; step up to 400 or 600 if the line needs more capacity, or down to 200 for compact points of use. Drain type is a real choice: manual (this unit, and it widens the regulation range to 0.05-0.9 MPa), automatic, or the differential-pressure default. Filter grade is 40 um standard or 5 um with code W where finer filtration is needed. Gauge options are the embedded square gauge or an external round gauge, with MPa, psi or bar scales; this code specifies the round gauge with MPa scale. Thread is PT as standard, with G and NPT as order options, and a bracket is included unless code J is specified. Flow is published as curves, not a single rating, so send us your application details and we will confirm sizing against the datasheet before you order.
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, not as a single rated figure, so we do not quote a Cv, l/min or SCFM number. Send us your application details and we will confirm the datasheet flow curve and help you check whether the 300 size with a 1/4 in port suits your demand before you order.
M specifies a manual drain: an operator opens the drain to release accumulated condensate from the bowl instead of relying on the differential-pressure or automatic drain options. It is the straightforward choice where the unit is checked regularly, and on this manual-drain configuration the regulator adjustment range is 0.05-0.9 MPa (7-130 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.