The AirTAC GFR30008LJC2K AirTAC Filter Regulator 1/4 in Low-Pressure 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 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 GFR30008LJC2K is a filter regulator: it removes water and particulate from compressed air through a 40 um element and regulates downstream pressure in a single body. This unit is built on the GFR300 size with PT1/4 (1/4 in) ports, PT thread as standard, a polycarbonate bowl with a differential-pressure drain, and the low-pressure regulator type. It is fitted with a round external gauge scaled in psi and a reverse/check valve, and is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR300 sits in AirTAC's GFR range of 200, 300, 400 and 600 sizes, with port options from 1/8 to 1 in, G (BSPP) or NPT threads to order, 5 um filtration (code W), automatic or manual drains, and alternative gauge choices. Maximum 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 datasheet figures for your application.
| Model | GFR30008LJC2K AirTAC Filter Regulator 1/4 in Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT thread) |
| Filtering grade | 40 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. |
| (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. |
| 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Filtered, low-pressure regulated air feeding clamp and weld-gun actuation circuits on an automotive robotic welding cell, with the fitted check valve blocking reverse flow if upstream supply pressure drops.
Supplying filtered, regulated air to spray guns and atomizing circuits on a coating line, where the low-pressure regulator type and 40 um element suit finishing equipment that does not run at full line pressure.
Feeding diverter gates and stop cylinders on a distribution-center parcel conveyor, with the PT1/4 connection matching the supply ports of the valve manifold that drives the gates.
The main choice is size and port: the 200, 300, 400 and 600 bodies step up in port and flow capacity, so match the GFR300's PT1/4 connection to your line size and let us check the flow curves against your demand before ordering. Drain type is a real decision: this unit carries the differential-pressure drain (the default), with automatic (A) and manual (M) versions available. Filtration is 40 um standard, with 5 um (code W) where finer air is needed. Gauge options cover the fitted round gauge in psi on this model, or scales in MPa or bar; PT thread is standard and G (BSPP) or NPT are order options, and a mounting bracket can be added (this unit is code J, no bracket). Because flow is published as curves, not a single rating, ask us to confirm sizing 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 GFR300 flow as curves, not as a single rated figure, so we do not quote a number. Send us your line pressure, set pressure and air demand, and we will confirm the flow and datasheet figures for this exact unit on request.
The L code marks the low-pressure regulator variant, used where the circuit holds a lower set pressure than the standard GFR300. The exact adjustment range for the low-pressure type is not published in the catalogue, so confirm it with us before ordering; the unit otherwise keeps the 40 um element, differential-pressure drain and round psi gauge decoded here.
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.