The AirTAC GFR30010LJF2WTK AirTAC Filter Regulator NPT3/8, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" 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 GFR30010LJF2WTK is a size 300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a 5 um filter element (the finer of the two catalogue grades), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure drop across the element rises, and a low-pressure regulator type for circuits set below standard working pressures. It is fitted with the embedded square gauge scaled in psi, a reverse/check valve to hold downstream pressure when the supply is lost, and NPT 3/8 in ports; no mounting bracket is included. The polycarbonate bowl is rated for a maximum inlet pressure of 1.0 MPa (145 psi) and a medium temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, a choice of drain type, 40 um or 5 um filtration, gauge scale, thread form (PT standard, G and NPT as order options) and bracket or no-bracket mounting. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR30010LJF2WTK AirTAC Filter Regulator NPT3/8, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 — square, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 10 | Port size PT3/8". 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Filtered, regulated air feeding clamp and hold-down cylinders on a carton-sealing machine, where the low-pressure regulator type holds a gentle set pressure and the 5 um element protects cylinder seals from particulate.
Supplying spray guns in a paint or coating booth, where the 5 um element keeps the atomizing air clean and the low-pressure regulation suits the modest set pressures atomizing work needs; the reverse valve holds the line if supply drops.
Feeding pilot-air circuits of pneumatic process valves on a bottling or filling line, with the square psi gauge giving operators a direct local reading and the differential-pressure drain keeping condensate off the pilot seats.
Size 300 with 3/8 in NPT ports sits in the middle of the GFR range: step up to size 400 or 600 for larger ports and higher flow demand, or down to size 200 for compact circuits. The 5 um element (code W) suits air tools, valves and instruments that need finer filtration than the 40 um standard; the differential-pressure drain is the zero-maintenance default, with automatic and manual drains available in the family. The square gauge here reads in psi; MPa and bar scales and an external round gauge are catalogue options. PT is the standard thread, with G (BSPP) and NPT as order options, and this unit comes without a bracket. Note the low-pressure regulator type: its exact adjustment range is not published in the material we hold, so ask us to confirm it against your set pressure before ordering. Flow is published as curves, not a single rating, so have us check the curve against your required flow before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes GFR flow as curves, not as a single rated figure, so there is no one number we can honestly quote. Send us your line pressure, set pressure and required flow, and we will confirm the sizing from the datasheet curves on request before you order.
The L marks the low-pressure regulator type, a variant intended for circuits set below standard working pressures. The exact adjustment range for this low-pressure type is not published in the material we hold, so tell us your target set pressure and we will confirm suitability on request. The unit also carries a 5 um element (finer than the 40 um standard), a square psi gauge and a reverse/check valve, all decodable from the code.
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.