The AirTAC GFR300C08MLJC1WT 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 GFR300C08MLJC1WT is a GFR-series filter regulator: one body that removes water and particulate from compressed air and reduces line pressure to the level the downstream equipment needs. This configuration is built on the GFR300 size with 1/4 in NPT ports, a 5 um filter element (code W), a manual-drain metal bowl, and the low-pressure regulator type. A round pressure gauge scaled in MPa is fitted so the setpoint can be read at a glance; no mounting bracket is included and no reverse/check valve is fitted. 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. The GFR family spans four sizes - 200, 300, 400 and 600 - with ports from 1/8 to 1 in and options covering thread (PT standard, G and NPT to order), drain type, filter grade, gauge style and scale, and bracket. The regulation range for the low-pressure type is not published in the catalogue, and flow is given as curves rather than a single rating; we confirm both, together with the full datasheet, on request.
| Model | GFR300C08MLJC1WT 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) |
Drops header pressure to the gentle setting spray guns work at and strips water and 5 um particles from the feed so finish work stays free of defects.
Feeds delicate clamp and hold-down cylinders that run below standard line pressure, with the round MPa gauge giving the operator a clear setpoint readout.
Gives test rigs and pilot skids a filtered, regulated air feed where a low-pressure regulator and a fine 5 um element matter more than high flow.
Choose the size by port and air demand: GFR300 with 1/4 in NPT ports suits circuits plumbed at 1/4 in, while the 200, 400 and 600 sizes step the port and flow capacity down or up. Pick the drain to match maintenance routines: manual (this unit) needs an operator to bleed collected water from the bowl, while automatic and differential-pressure versions drain themselves. Filter grade is 40 um as standard; the W code here specifies the finer 5 um element for equipment that needs cleaner air. Gauge scales are offered in MPa, psi or bar - this model carries a round gauge in MPa. Thread is PT as standard with G and NPT as order options; this unit is built with NPT. A bracket is optional and is not included here. Because flow is published as curves, not a single rating, and the low-pressure regulation range is not listed, ask us to confirm sizing and the exact range 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 GFR-series flow as curves rather than a single rated figure, so no flow number is quoted here. Send us your line pressure and air demand and we will confirm the flow curves and full datasheet figures for this exact model on request.
The M in the code specifies a manual-drain bowl: an operator opens the drain valve to discharge the water and contamination the 5 um element has collected. If the compressor runs unattended, ask us about automatic or differential-pressure drain versions of the GFR300.
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.