The AirTAC GFR300C08MLJC1TK AirTAC Filter Regulator NPT1/4 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 GFR300C08MLJC1TK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit is threaded NPT1/4 (1/4 in), carries the standard 40 um filter element, and drains by hand via its manual drain. The regulator is the low-pressure type, rated for a maximum inlet pressure of 1.0 MPa (145 psi) and -5 to 70 C (non-freezing). The code also fits a round pressure gauge with an MPa scale and a reverse (check) valve; no mounting bracket is included.
This is a genuine AirTAC part from the GFR300 series. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options for thread (PT standard, G and NPT to order), drain type, filter grade, gauge and scale. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR300C08MLJC1TK AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Set a reduced, stable supply to labeling or wrapping heads on a packaging line where the actuator circuit runs below main header pressure; the manual drain suits a shift-based maintenance routine.
Feed pneumatic clamps and grippers on a robotic welding cell, with the 40 um element protecting directional valves from particulate and the fitted check valve guarding the circuit against backflow.
Regulate filtered air to a laboratory or quality-control test rig where instruments need a lower set pressure than the shop header, with the round MPa gauge giving a direct local readout.
Choose the size and port against the air consumption of the circuit: this unit is size 300 with a 1/4 in NPT port, one step in the 200/300/400/600 range where larger sizes carry larger ports and more flow. Drain type is a real choice: manual (this code) needs periodic hand draining, while automatic and differential-pressure drains handle condensate without attention. Filter grade is 40 um standard; specify W for a 5 um element. Gauge scale can be MPa, psi or bar - this code carries a round MPa gauge. Thread is PT as standard with G and NPT as order options, and a bracket can be added if this no-bracket code does not suit your mounting. Because flow is published as curves rather than a single rated figure, ask us to confirm sizing against your 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 rather than a single rated figure, so we do not quote a number here. Send us your application's air consumption and working pressure and we will confirm the flow and the full datasheet figures on request.
The M in the code specifies a manual drain: condensate collected in the metal bowl is released by hand, so plan a routine draining interval. The K code adds a reverse (check) valve that prevents backflow through the unit. If you would rather not drain by hand, ask about the automatic or differential-pressure drain versions of the same size.
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.