The AirTAC GFR300C10MJF1T AirTAC Filter Regulator NPT3/8 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 GFR300C10MJF1T is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure steady. This size 300 unit is threaded NPT3/8, drains by hand through its manual drain, carries the standard 40 um filter element, and is fitted with an embedded square gauge scaled in MPa. The regulator is the standard type with an adjustment range of 0.05-0.9 MPa (7-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C, non-freezing. The bowl is polycarbonate (PC), the standard material at this size.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options include a 5 um element (code W), automatic or differential-pressure drain, G or NPT thread in place of the PT standard, gauge scale in psi or bar, a reverse/check valve, and a mounting bracket (this unit is ordered without one). Flow for the series is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C10MJF1T AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
Filtering and regulating the 3/8 in supply drop to a machining centre's pneumatic clamps and tool-change cylinders, keeping the set pressure steady while water and swarf-carrying debris are stripped out.
Conditioning the air feeding carton-erector and case-sealer cylinders on a packaging line, so box flaps are formed at a fixed regulated pressure with condensate and particulate removed upstream.
Supplying the air cylinders that divert and merge bottles on a bottling conveyor, where a stable regulated pressure keeps pusher timing consistent and the manual drain suits a shift-based maintenance routine.
Size the unit against the air demand of the line: this is size 300 with a 3/8 in NPT port, one step in the 200/300/400/600 range that runs up to 1 inch. Drain type is a real choice - manual (as here, which also widens the regulation range to start at 0.05 MPa / 7 psi), automatic for hands-off condensate removal, or the differential-pressure default. Filter grade is 40 um standard or 5 um with code W where finer filtration is needed. Gauge scale is MPa as fitted, with psi or bar available, and thread can be PT (the standard), G or NPT. A mounting bracket is optional; this configuration has none. Because flow is published as curves rather than a single rating, send us your application conditions and we will confirm sizing from the datasheet before you order.
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. Send us your inlet pressure, set pressure and air demand, and we will confirm the flow from the datasheet for this size 300, NPT3/8 unit before you order.
With the manual drain fitted, the regulator adjusts from 0.05-0.9 MPa (7-130 psi); with the automatic or differential-pressure drain the range starts higher, at 0.15 MPa (20 psi). The manual drain also means the bowl is vented by hand as part of maintenance - if that is not practical, the automatic drain (code A) is the alternative.
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.