The AirTAC GFR300C10MJNT 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.
GFR300C10MJNT is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body, with a drain bowl but no lubricator. This configuration is the 300 size with a 3/8 in NPT thread, a manual drain, the standard 40 um filter element, and a standard regulator adjustable from 0.05-0.9 MPa (7-130 psi). Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the unit has a metal bowl. No gauge, mounting bracket or reverse/check valve is fitted under this code.
This is a genuine AirTAC part. The GFR family is available in 200, 300, 400 and 600 sizes with a choice of PT, G (BSPP) or NPT threads, manual, automatic or differential-pressure drains, a 5 um element (code W) in place of the standard 40 um, gauge options, and bracket variants. Flow for these units is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300C10MJNT 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) |
Point-of-use supply for carton-closing and sealing cylinders on a packaging line: the 40 um element strips water and particulate from shop air before it reaches the valves, while the regulator holds the set working pressure the machine was set up with.
Filtered and regulated air for a small pneumatic press or clamping fixture, where the operator sets the working pressure once and the manual-drain bowl is emptied during routine checks to keep moisture out of the tooling circuit.
Air prep for robotic grippers and pick-and-place cylinders in an assembly cell: the 3/8 in NPT connection slots into the cell's air drops, and the regulator keeps grip pressure consistent across shifts.
Choose the size and port step against the air demand of the downstream circuit: this unit is size 300 with a 3/8 in NPT port, and larger sizes carry larger ports and more flow. The decodable choices on this family are the drain (manual, as fitted here, versus automatic or differential-pressure), the filter element (40 um standard, 5 um with code W), the gauge and its scale, the thread (PT is the standard; G and NPT are order options), and the bracket. Note that the regulation range depends on the drain type: 0.05-0.9 MPa (7-130 psi) with a manual drain as on this unit, 0.15-0.9 MPa (20-130 psi) with automatic or differential-pressure drain.
Flow is published as curves, not as a single rated figure, so no rated flow number can be quoted here. Send us your application details and we will confirm the datasheet figures and sizing against your requirement 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 rather than a single rated figure, so there is no one rated flow number we can quote for this model. Send us your air demand and line conditions and we will confirm the datasheet curve and sizing for your application on request.
The M in the code specifies a manual drain: water collected in the bowl is released by operating the drain by hand, so draining should be part of routine maintenance checks. With a manual drain the regulator adjusts from 0.05-0.9 MPa (7-130 psi); automatic and differential-pressure drain versions adjust from 0.15-0.9 MPa (20-130 psi).
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.