The AirTAC GFR30010LJC2WTK 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 GFR30010LJC2WTK is a size 300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built with a 3/8 in NPT port, a fine 5 um filter element (code W), a differential-pressure drain that bleeds accumulated condensate automatically whenever the pressure differential across the element is high enough, and the low-pressure regulator type for circuits that are set below the standard band. A round pressure gauge with a psi scale is fitted so the downstream setting can be read at a glance, and the reverse/check valve (code K) holds the downstream setting if the upstream supply is lost. The polycarbonate bowl suits the 300 size, maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C, non-freezing. No mounting bracket is included in this version (code J).
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and with choices of drain type, filter grade, gauge style and scale, thread form and bracket. Flow figures for this series are published as curves rather than a single rated number, so contact us and we will confirm the datasheet figures for your application on request.
| Model | GFR30010LJC2WTK 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 — round, 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). |
| C | Gauge shape: Round. 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) |
A clamping fixture on a CNC cell needs clean, finely filtered air held at a low, stable setting so the clamp force stays consistent across the cycle. This unit filters to 5 um, regulates in the low-pressure band, and the check valve holds the clamp setting if shop air dips.
On a packaging line, sealing and folding actuators run continuously and are sensitive to water and fine debris in the supply. A filter regulator at each machine drops the header pressure to the working level, and the differential-pressure drain clears condensate without stopping the line.
Pilot-supplied process valves and positioners need particulate-free air at a steady reduced pressure. Feeding the manifold through this unit removes water and particles down to 5 um, and the fitted psi gauge lets technicians verify the setpoint during commissioning and rounds.
Start with the port and size: this unit is size 300 with a 3/8 in NPT port, one step up from the 1/4 in size 200 - pick the size whose flow curve covers your machine's air demand with margin. The 5 um element (code W) is the finer of the two published grades (40 um is the standard); choose it when downstream valves, cylinders or instruments need cleaner air than the standard element delivers. The differential-pressure drain is the default: it discharges condensate automatically on pressure differential, with no operator action, while manual-drain and automatic-drain versions are available in the family if your duty cycle suits them better. The fitted round gauge reads in psi; square embedded gauges and MPa or bar scales are the other catalogue choices. This is the low-pressure regulator type, intended for circuits set below the standard band - ask us to confirm the exact adjustment range against your setpoint before ordering. Thread is NPT here; PT is the catalogue standard and G (BSPP) is also an order option. Bracket: none in this version (code J). Flow for this series is published as curves, not a single rating, so ask us to confirm sizing from the datasheet against your application 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 flow for the GFR series as curves, not as a single rated number, so there is no one figure we can quote honestly. The right figure depends on your upstream pressure, setpoint and allowable pressure drop. Contact us with your operating conditions and we will confirm the datasheet flow curve and sizing for your application on request.
The W in the code specifies the finer of the two published filter grades: 5 um instead of the 40 um standard, for downstream equipment that needs cleaner air. The K specifies a reverse/check valve, which holds the regulated downstream pressure if the upstream supply is interrupted. Both are catalogue options on the GFR family; a version with the 40 um element and no check valve is available if your application does not need them.
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.