The AirTAC GFR30008LJC2WTK AirTAC Filter Regulator NPT1/4 5um 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 PT1/4" 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 GFR30008LJC2WTK is a GFR300 filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at your setpoint. This configuration is built for low-pressure circuits, filters to 5 um, drains the bowl by differential pressure, carries an external round gauge with a psi scale, and has a reverse (check) valve fitted. Ports are NPT 1/4, the polycarbonate bowl suits non-freezing compressed air from -5 to 70 C, maximum inlet pressure is 1.0 MPa (145 psi), and the unit is supplied without a mounting bracket.
This is a genuine AirTAC part from the G-series air-treatment line, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, plus catalogue options for drain type, filter grade, gauge style and scale, thread (PT standard; G and NPT to order) and bracket. Because AirTAC publishes flow as curves rather than a single rating, send us your flow requirement and we will confirm sizing and the full datasheet on request.
| Model | GFR30008LJC2WTK AirTAC Filter Regulator NPT1/4 5um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (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. |
|---|---|
| 08 | Port size PT1/4". 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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Air preparation for clamps and swing cylinders that run on a gentle setpoint below standard shop pressure; the low-pressure regulator holds the circuit while the 5 um element keeps downstream valves clean.
Filtered, regulated supply to the gripper and slide cylinders on a carton or blister line, with the check valve holding the circuit if the main supply dips mid-cycle.
Clean, low-pressure air for actuated sample valves and dosing pumps in a lab bench setup, where the 5 um grade protects small precision components from water and particulate.
Step size and port to your air demand: this unit is size 300 with 1/4 in NPT ports, and the 400 or 600 frames are the catalogue step up when demand sits near the top of a 300 curve. Drain: this code uses differential-pressure drainage; automatic (A) and manual (M) are the alternatives. Filter grade: the W code sets the 5 um element, one grade finer than the 40 um standard. Gauge: this model carries an external round gauge on a psi scale; the embedded square gauge and MPa or bar scales are the other options. Thread: PT is the AirTAC standard, while G (BSPP) and NPT are order options - this code specifies NPT. Bracket: none fitted (J code). Flow is published as curves, not a single rating, so ask us to check the curve against your application before ordering.
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 GFR300 flow as curves rather than a single rated figure, so we do not quote a number here. Send us your required flow and setpoint and we will confirm from the datasheet whether the GFR300 at 1/4 in NPT suits your application.
The W code selects the 5 um filter element, one grade finer than the 40 um standard, for better protection of downstream valves and actuators. The blank drain position is differential-pressure drainage, which clears the bowl based on the pressure differential across the unit; automatic (A) and manual (M) drains are catalogue alternatives if you prefer a different regime.
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.