The AirTAC GFR300-15LJF2WG AirTAC Filter Regulator, G1/2, 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 PT1/2" 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 GFR300-15LJF2WG is a GFR300-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one compact body. This configuration carries a G1/2 (BSPP) port, a 5 um filter element (code W, against the 40 um standard), a polycarbonate bowl with differential-pressure drain, the low-pressure regulator type, an embedded square gauge reading in psi, and no mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, drain choices (differential-pressure, automatic or manual), 40 or 5 um filtration, gauge and scale options, and PT, G or NPT thread variants. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures and the full datasheet for your application.
| Model | GFR300-15LJF2WG AirTAC Filter Regulator, G1/2, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (G (BSPP) 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 | 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. 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. |
|---|---|
| 15 | Port size PT1/2". 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. |
| G | G (BSPP) 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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeding fixture clamps on a machining line that runs its actuators at reduced line pressure: the unit filters carryover water and particulate, then holds the reduced setting the clamps were designed around, with the psi gauge giving operators a local reading.
Supplying cylinders and grippers on a carton-forming or case-packing line, where the 5 um element protects downstream directional valves from fine particulate and the regulator keeps actuator speed consistent as plant pressure drifts.
Regulating the air feed to a benchtop pneumatic press or riveter, where the operator sets forming pressure once at the unit's square gauge and the differential-pressure drain clears accumulated condensate from the bowl during normal flow.
Every choice on this unit is decodable from the code. Size 300 with a 1/2 inch port suits mid-range circuits; step up or down (200/400/600) as your flow demand changes. Drain is differential-pressure here, with automatic (A) and manual (M) available on the same series. Filtration is the finer 5 um element (W) instead of the 40 um standard. The gauge is the embedded square type with a psi scale; MPa or bar scales and an external round gauge are options. Thread is G (BSPP) on this unit - PT is the standard thread and NPT is orderable. A mounting bracket can be added (J here means none). The low-pressure (L) regulator type suits circuits running below standard line pressures; its exact adjustment range is not published, so confirm it with us. 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. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this series as curves, not as a single rated figure, so we do not quote a number here. Send us your application's flow and pressure requirements and we will confirm the correct size from the datasheet before you order.
W is the filter-grade code: this unit carries the 5 um element instead of the 40 um standard. Choose 5 um where finer particulate removal is needed downstream, such as before precision valves or sensitive actuators; the 40 um element remains the standard choice for general air preparation.
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.