The AirTAC GFR30008MJF2TK AirTAC Filter Regulator NPT1/4 Manual Drain 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 PT1/4" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR30008MJF2TK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate from compressed air with the standard 40 um element, then regulates downstream pressure over 0.05-0.9 MPa (7-130 psi), the range that applies to the manual-drain version of this unit. This configuration has a 1/4 in NPT port, a manual drain on the PC (polycarbonate) bowl, an embedded square gauge with a psi scale, and a reverse (check) valve fitted; no mounting bracket is included (code J). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, and with choices of drain type, filter grade (40 um standard, 5 um with code W), gauge style and scale, thread (PT standard; G and NPT as order options), bracket and reverse valve. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application on request.
| Model | GFR30008MJF2TK AirTAC Filter Regulator NPT1/4 Manual Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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 0.05 - 0.9 MPa (7 - 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. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/4" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeding clean, regulated air to carton sealers, case packers and labelling heads on a packaging line, where the manual-drain bowl is bled during scheduled changeovers and the check valve holds the downstream circuit while upstream supply is interrupted.
Supplying a single machine station - a pneumatic press, clamp or gripper circuit - with one compact unit that both filters incoming shop air and sets the working pressure the tooling was designed for, read directly on the psi gauge.
Conditioning air at the point of use for spray guns and coating equipment, where water and particulate must be stripped out and pressure set to the applicator's requirement, with the manual drain operated at the end of each shift.
Choose the size 300 / 1/4 in port step by matching the published flow curve to the air demand of the circuit - not by a single rated figure, which the catalogue does not publish. Decide the drain type: this code carries manual drain (M), which suits installations where an operator can bleed the bowl periodically; automatic and differential-pressure drains are available in the family if the bowl cannot be attended. The standard 40 um element covers general pneumatic protection; specify 5 um (code W) only where finer filtration is genuinely needed. The square gauge here reads in psi (scale 2); MPa and bar scales and an external round gauge are alternatives. Thread is NPT on this code; PT is the catalogue standard and G (BSPP) is also orderable. Code J means no mounting bracket - bracket variants exist if you need panel fixing. Before ordering, send us the application details and we will confirm sizing against the datasheet flow curves.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number for this unit. Send us your application details - air demand and working pressure - and we will confirm the sizing against the datasheet flow curves on request before you order.
M in the code is the manual drain: the PC bowl is emptied by hand, which suits stations that are attended regularly. Because this is a manual-drain unit, the regulation range is 0.05-0.9 MPa (7-130 psi). F2 is the gauge code: an embedded square gauge fitted with a psi scale (MPa and bar scales are alternatives). The K at the end means a reverse (check) valve is fitted, and J means no mounting bracket is included.
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.