The AirTAC GFR300C10MJF2T AirTAC Filter Regulator NPT 3/8 in 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 GFR300C10MJF2T is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body with one drain bowl. This configuration is size 300 with a 3/8 in NPT port, a manual drain, a 40 um standard filter element, a built-in square gauge reading in psi, and no mounting bracket. The regulator is the standard type, adjusts from 0.05 to 0.9 MPa (7-130 psi), and the unit accepts up to 1.0 MPa (145 psi) inlet pressure, operating from -5 to 70 C in non-freezing conditions.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options across the range include automatic, manual or differential-pressure drains, a 5 um element (code W), G (BSPP) or NPT threads, gauge scales and styles, and mounting brackets. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C10MJF2T AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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. |
|---|---|
| C1 | 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-C1 (two-unit set) |
Feeding the pneumatic pusher and capping cylinders on a bottling line: the 40 um element strips water and pipe scale before they reach the seals, while the regulator holds a steady working pressure so each stroke finishes the same way, shift after shift.
Supplying the stopper and diverter cylinders along a conveyor system. The single-body filter regulator keeps grit and condensate out of the station valves and lets the line-set pressure be locked at the station rather than adjusted at a remote supply panel.
Regulating the air to pneumatic clamps on a CNC fixture. The 3/8 in NPT port suits a machine-side supply drop, the psi gauge gives the operator a direct reading of clamp pressure, and the manual drain supports a scheduled end-of-shift moisture check.
Pick the size and port step against the air demand of your circuit: this unit is size 300 with a 3/8 in NPT port, and the GFR range steps through 200, 300, 400 and 600 with ports from 1/8 to 1 in. Drain type is a real choice here: manual (this unit) means someone opens the bowl drain during checks, automatic (code A) empties itself, and the differential-pressure drain (default) bleeds as pressure drops; note the manual-drain version regulates from 0.05 MPa, slightly lower than the 0.15 MPa floor of the automatic and differential versions. Filter grade is 40 um standard or 5 um with code W. The square psi gauge is fitted on this unit; MPa or bar scales and an external round gauge are alternatives. Thread is NPT here, with PT as the standard and G (BSPP) available to order, and the bracket is omitted on this configuration. Because flow is published as curves rather than a single rated figure, 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 number, so we do not quote a figure here. Tell us your application and we will confirm the relevant flow and datasheet figures for you on request before you order.
The M in the code means the bowl drain is opened by hand, which suits installations checked on a regular schedule. If you cannot rely on that, code A gives an automatic drain and leaving the position blank gives a differential-pressure drain; note the manual-drain version also regulates from 0.05 MPa (7 psi), lower than the 0.15 MPa (20 psi) floor of the automatic and differential-pressure versions.
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.