The AirTAC GFR300C10MLJC1WTK AirTAC Filter Regulator NPT3/8 5um 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 GFR300C10MLJC1WTK is an AirTAC GFR300 filter regulator: one body that strips water and particulate from compressed air and regulates the pressure delivered downstream. This configuration is the low-pressure type (code L) for circuits that run at reduced settings, with a 5 um filtration element (code W), a metal bowl with manual drain (code M), an external round gauge scaled in MPa, a reverse/check valve fitted (code K), and no mounting bracket (code J). The port is NPT3/8 (3/8 in).
This is a genuine AirTAC part, rated for a maximum inlet pressure of 1.0 MPa (145 psi) and -5 to 70 C operation (non-freezing). The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and offers drain types (differential-pressure, automatic or manual), 40 um standard or 5 um filtration, gauge styles with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C10MLJC1WTK AirTAC Filter Regulator NPT3/8 5um |
|---|---|
| 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) |
Feeds and regulates the air to clamping fixtures on a machining cell that hold workpieces at reduced settings, with the 5 um element keeping grit out of the clamp cylinders and the fitted check valve in the circuit.
Conditions the compressed air feeding pneumatic actuators on analytical and test-bench equipment, filtering to 5 um and letting technicians read and adjust the setting on the round MPa gauge.
Sits at the drop of a packaging conveyor's air line, removing water and fine particles before directional valves and cylinders, with the manual drain bled as part of a shift-start maintenance routine.
Size and port step up with air demand: this unit is size 300 with a 3/8 in NPT port; step to 400 or 600 if your line needs more air, or down to 200 for compact points of use. Drain choice matters: a manual drain needs an operator to bleed the bowl at intervals, while automatic and differential-pressure drains discharge condensate without attention - this unit is manual. Filtration here is the finer 5 um grade (code W); 40 um is the standard element when fine filtration is not required. The external round gauge scaled in MPa is fitted; a square gauge or psi/bar scales are the alternatives. Thread is NPT on this unit; PT is the standard and G (BSPP) is also available to order. No mounting bracket is included (code J).
Because flow is published as curves rather than one rated figure, send us your application details - required pressure and estimated air consumption - 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 flow for the GFR300 as curves rather than a single rated figure, so we do not quote a number here. Send us your application details - required pressure and estimated air consumption - and we will confirm the flow figures from the datasheet before you order.
L marks this as the low-pressure type of regulator for circuits that run at reduced settings; the exact adjustment range for this variant is not published, so we will confirm it on request. M means the bowl drains manually: an operator opens the drain at intervals instead of relying on an automatic or differential-pressure drain. The fitted round gauge is scaled in MPa.
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.