The AirTAC GFR300C08MJF2TK 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 GFR300C08MJF2TK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration has 1/4 in NPT ports, the standard 40 um filter element, and a manual drain you operate by hand to empty collected condensate from the polycarbonate bowl (only size 600 units use an aluminium alloy bowl). Outlet pressure is set and read on the embedded square gauge with a psi scale, and a reverse/check valve is fitted to hold downstream pressure if the supply drops. Maximum inlet pressure is 1.0 MPa (145 psi); the standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi). Operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family covers sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options across the series include automatic or differential-pressure drains, a finer 5 um element (code W), G (BSPP) or NPT threads in addition to the PT standard, gauge scales in MPa, psi or bar, and an optional mounting bracket. 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.
| Model | GFR300C08MJF2TK 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) |
Point-of-use air prep for a clamp cylinder on a CNC machining cell: the 40 um element keeps swarf-contaminated line air out of the valve, the regulator holds a steady clamping force, and the check valve holds the clamp if supply pressure dips.
Feeding carton-seal and diverting cylinders on a packaging conveyor, where a manual-drain bowl suits a shift-start maintenance routine and the psi-scale gauge lets line staff verify setting at a glance.
A compact filter-regulator at the drop to a pick-and-place gripper circuit: clean, regulated air for consistent grip force, with the fitted check valve maintaining grip pressure through brief supply fluctuations.
Step up through the GFR sizes (200 / 300 / 400 / 600) as your port and air demand grow; this size 300 unit carries 1/4 in NPT ports. Drain choice matters in service: this code has a manual drain (M), while automatic (A) and the differential-pressure default empty the bowl without an operator; the manual-drain version also gives the widest 0.05-0.9 MPa (7-130 psi) adjustment range. The 40 um element is standard; specify 5 um (code W) where finer filtration is needed. The embedded square gauge on this unit reads in psi; an external round gauge is optional and scales are available in MPa, psi or bar. Thread: PT is the AirTAC standard and G (BSPP) and NPT are catalogue options - this code is ordered with NPT. No mounting bracket is included with this code; brackets are available as an option. 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 here. Ask us and we will confirm the datasheet flow curve for the GFR300 and check it against your application before you order.
The M in the code means a manual drain: an operator opens it to empty collected condensate from the bowl, which suits lines with a regular maintenance routine. The same GFR300 series is also available with an automatic drain (code A) or the differential-pressure drain (the default, no code), which remove condensate without manual attention; the manual-drain version additionally offers the widest 0.05-0.9 MPa (7-130 psi) adjustment range.
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.