The AirTAC GFR300C10MLJF3WT AirTAC Filter Regulator 3/8 in NPT 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 GFR300C10MLJF3WT is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 300-size unit is built with a 3/8 in NPT port, a 5 um filter element (code W), a manual drain on the bowl, and the low-pressure regulator type for circuits that run below standard set pressures. It ships as coded with a metal bowl, an embedded square gauge scaled in bar, no reverse/check valve, and no mounting bracket.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um fine filtration, gauge and scale choices, PT, G or NPT threads, and bracket options. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application.
| Model | GFR300C10MLJF3WT AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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) |
On a carton-sealing or bagging line, heated glue guns and seal jaws run at reduced pressure to avoid crushing the product. A low-pressure filter regulator at the machine drop keeps that circuit clean, dry and held at a gentle setpoint, with the bar-scale gauge giving operators a clear local readout.
Test rigs, sample-handling actuators and bench-mounted pneumatic fixtures need air that is free of water and fine particles and held at a low, stable pressure. This unit filters to 5 um at the bench inlet and lets a technician dial in and read the setpoint in bar without touching the main plant regulator.
Small grippers and vacuum-assisted handling modules on an assembly cell work best on clean, low-pressure air so parts are not marked or dropped. Feeding the cell branch through this 3/8 in filter regulator protects the gripper valves from condensate and particulate while holding the delicate set pressure the cycle needs.
Size and port step up together: 200 through 600 covers 1/8 in to 1 in, so pick the size whose flow curve covers your demand at acceptable pressure drop - we can check the curve against your consumption before you order. Drain choice matters: manual drain (as coded here) needs someone to open the drain, while automatic and differential-pressure drains handle condensate without attention. The 5 um element (W) suits air going to sensitive valves and instruments; the 40 um standard element is fine for general circuits. Gauge scale is selectable (MPa, psi or bar) - this unit carries the square gauge in bar. Thread is PT as standard with G and NPT as order options, and the bracket is omitted on this code.
Note that this is the low-pressure regulator type; its set-pressure range is not published as a single figure, so confirm it with us against your working pressure. Because flow is published only as curves, ask us to confirm sizing against the 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 this series as curves, not as a single rated number, so we do not quote a l/min or SCFM figure. Tell us your working pressure and air consumption and we will confirm the flow from the datasheet curve for this 3/8 in, 300-size unit before you order.
This code carries the M option: the bowl drain is opened by hand to expel collected water. Manual drain suits installations that are checked as part of a routine, such as a machine serviced each shift. If the unit is mounted where nobody attends it, choose the automatic or differential-pressure drain version instead - we can supply the same unit in those variants.
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.