The AirTAC GFR300C10MLJF1T AirTAC Filter Regulator NPT3/8 Low-Pressure 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 AirTAC GFR300C10MLJF1T is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This unit is built on the 300 size with a 3/8 in NPT port, a manual drain bowl, the 40 um standard filter element, and the low-pressure regulator type. The embedded square gauge on the MPa scale is fitted, so you can read and set downstream pressure directly, and no mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR series, which spans sizes 200 to 600 with ports from 1/8 to 1 in, a choice of drain types, 40 um or 5 um filtration, gauge scale options and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the sizing figures from the datasheet for your application before you order.
| Model | GFR300C10MLJF1T AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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) |
Supplies filtered air to pneumatic clamps that must close at a reduced, repeatable set pressure; the manual drain lets the operator bleed accumulated water at shift start before the cycle begins.
Feeds pick-and-place and carton-sealing cylinders on a packaging line, filtering out water and pipe scale while the low-pressure regulator holds the gentler setting those actuators need.
Provides clean, regulated pilot air to diaphragm control valves on a process skid; the MPa square gauge gives the technician a direct read of the pilot set point at the manifold.
The meaningful choices are already fixed in the code: the 300 size with a 3/8 in NPT port sets the flow path, the manual drain means you bleed accumulated water from the bowl by hand (which suits positions that are shut down regularly), the 40 um element is the standard grade (5 um is available as code W if finer filtration is needed), and the L sets the low-pressure regulator type with the square MPa gauge fitted. If you need a different thread, PT is the standard and G (BSPP) and NPT are order options; brackets are optional on this series. Because flow is published as curves rather than a single rated figure, send us your flow and pressure requirements and we will confirm sizing against 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 GFR300 flow as curves rather than a single rated figure, so we do not quote a number here. Tell us your flow and pressure conditions and we will confirm the sizing from the datasheet on request before you order.
The L in the code sets the low-pressure regulator type, intended for circuits that run below standard line settings; the exact adjustment range is not published on the sheet, so we confirm it on request. The M sets a manual drain, meaning you vent the bowl by hand, which suits stations that are shut down regularly. The 40 um element is the standard grade; 5 um filtration is available as code W.
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.