The AirTAC GFR30008MJF2K AirTAC Filter Regulator PT1/4 psi 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 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 GFR30008MJF2K is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure in a single body. This configuration is a 1/4 in (PT1/4) unit with a manual drain, a 40 um filter element, a standard regulator adjustable from 0.05 to 0.9 MPa (7-130 psi), an embedded square gauge scaled in psi, and a built-in reverse (check) valve. No mounting bracket is fitted.
It is a genuine AirTAC part from the GFR300 series, rated to 1.0 MPa (145 psi) maximum inlet pressure and -5 to 70 C (non-freezing), with a PC (polycarbonate) bowl. The G-series runs from size 200 to 600 with ports from 1/8 in to 1 in, plus options such as automatic or differential-pressure drains, a 5 um element, G or NPT threads and external round gauges. Flow is published as curves rather than a single rating, so we confirm datasheet figures on request.
| Model | GFR30008MJF2K AirTAC Filter Regulator PT1/4 psi gauge |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT 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. |
| (blank) | PT 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) |
Filters water and scale out of the shop air feeding the press cylinder and holds a set working pressure so each stroke runs at the same setting, with the check valve holding downstream pressure when supply drops.
Conditions and regulates the air supply to stopper cylinders and pushers along a packaging conveyor, keeping moisture and debris out of the valves that index cartons.
Drops water and particulate from the air line ahead of the spray guns and regulates delivery pressure to the setting the coating process calls for at the booth.
Start with the port: this 300-size unit is threaded PT1/4 (1/4 in); if your air demand exceeds what a 1/4 in line carries, step up to a 400 or 600 size rather than restricting flow. Drain type is a real choice: this code has a manual drain you operate by hand, while automatic (A) and differential-pressure (blank) variants drain themselves. The 40 um element suits general plant air; specify the W code for a 5 um element where finer filtration is needed. The embedded square gauge here is scaled in psi; MPa and bar scales are available, and an external round gauge is optional. Thread is PT as standard, with G (BSPP) and NPT as order options; a bracket can be added on other codes.
Because flow is published as curves and not a single rating, 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this series as curves rather than a single rated number, so there is no honest one-line figure to quote. We confirm the datasheet flow curve for the GFR300 at 1/4 in on request - tell us your application and we will check the sizing with you before you order.
The M in the code GFR30008MJF2K means the bowl drain is operated by hand, so someone drains collected condensate on a routine. If you prefer unattended draining, the same GFR300 body is available with an automatic drain (code A) or a differential-pressure drain (no letter) - just ask for that variant.
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.