The AirTAC GFR300C10LJF2WTK AirTAC Filter Regulator NPT3/8 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 GFR300 series is a filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at your setpoint. This GFR300C10LJF2WTK is the 300 size with NPT3/8 ports, a 5 um filter element (code W), a metal bowl with differential-pressure drain, the low-pressure regulator type, an embedded square gauge scaled in psi, and a built-in reverse (check) valve; no mounting bracket is included.
It is a genuine AirTAC part. The G-series filter regulators span the 200/300/400/600 sizes with ports from 1/8 to 1 inch, and offer drain, element-grade, gauge-scale (MPa/psi/bar), thread (PT standard, with G and NPT as catalogue options) and bracket choices. Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C10LJF2WTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
Filter and regulate the air feeding spray guns on a finishing line. The 5 um element and the square psi gauge suit booths that run at reduced line pressure and need a clean, steady setpoint.
Feed carton sealers and wrapping heads on a packaging conveyor from a single filtered, regulated take-off, with the built-in check valve holding the setpoint when upstream supply dips.
Give a workshop test bench one dial-in point for low-pressure function checks of assembled actuators and valves, with fine 5 um air protecting the instruments on the bench.
The real choices within GFR300: the port step (here NPT3/8) matched to your circuit's air demand; drain type - differential-pressure on this unit, with automatic (A) or manual (M) available; element grade - 40 um standard or the finer 5 um (W) fitted here; gauge scale in MPa, psi or bar; thread - PT is the standard, with G and NPT as order options; and bracket, which this J-code unit omits. This configuration is the low-pressure type (L) with a check valve (K). The exact adjustment range of the low-pressure type is not published in our sheet, so confirm it with us - and because flow is published as curves rather than a single rating, ask us to check the curves 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 G-series flow as curves, not as a single rated number, so we do not quote a figure here. Send us your air demand and line pressure and we will confirm the datasheet curve and the right size before you order.
The L code selects the low-pressure regulator variant, intended for circuits set well below standard line pressure. Its exact adjustment range is not published in our sheet, so we confirm it on request. This unit also carries the 5 um element (W), a psi-scale square gauge and a reverse/check valve (K).
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.