The AirTAC GFR30015MJF2G AirTAC Filter Regulator G1/2, 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 PT1/2" 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 AirTAC GFR30015MJF2G is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit has a G1/2 (BSPP) port, a 40 um standard filter element, and a manual drain, so an operator opens the drain at the bottom of the bowl to release collected condensate. The standard-type regulator adjusts outlet pressure from 0.05 to 0.9 MPa (7-130 psi), and the embedded square gauge reads in psi so the set pressure is visible at a glance. It is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with a choice of PT, G or NPT thread, differential-pressure, automatic or manual drain, 40 um or 5 um (code W) filtration, gauge scale in MPa, psi or bar, and optional bracket. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR30015MJF2G AirTAC Filter Regulator G1/2, Manual Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (G (BSPP) 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 | 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 0.05 - 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. |
|---|---|
| 15 | Port size PT1/2". 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. |
| G | G (BSPP) 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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Cleaned and pressure-regulated air feeding tool-change cylinders and clamping fixtures on a machining centre, with the psi gauge letting setters verify the regulated line pressure.
Air preparation for carton-sealing and taping heads on a packaging conveyor, where the manual drain is bled during shift start-up and the regulator holds a steady setting for consistent seal actuation.
A regulated, filtered air drop at a lab bench running small pneumatic test rigs, with the 40 um element catching pipe scale and water before it reaches sensitive instruments.
Size 300 with a 1/2 in port suits lines whose flow demand sits in the middle of the GFR range; step up to size 400 or 600 or down to size 200 according to the flow your circuit needs. Drain type is a real choice: manual drain (this unit) needs an operator to bleed the bowl, automatic drain suits unattended lines, and differential-pressure drain is the catalogue default. Filter grade is 40 um standard; specify code W for 5 um where finer particulate removal matters. Gauge scale can be ordered in MPa, psi or bar, and thread in PT (standard), G or NPT. 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 flow for the GFR series as curves, not as a single rated figure, so we do not quote a number. Tell us your working pressure and flow demand and we will confirm the datasheet curve figures for this size 300, G1/2 unit on request before you order.
The M in the code GFR30015MJF2G specifies a manual drain: condensate collected in the polycarbonate bowl is released by opening the drain by hand. The same size 300 unit can be ordered with automatic drain (code A) or the differential-pressure drain default (blank) if you prefer not to bleed it manually.
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.