The AirTAC GFR300C15LJF2WG AirTAC Filter Regulator G1/2, 5 um 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 See datasheet 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 GFR300C15LJF2WG is a size-300 GFR filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built with a G1/2 (BSPP) port, a fine 5 um filter element (the 40 um standard element is swapped for the W grade), a differential-pressure drain that bleeds condensate automatically whenever the pressure drop across the element rises, and a low-pressure regulator type for circuits that run below standard working pressures. It ships as coded with a square pressure gauge reading in psi, no reverse/check valve, and no mounting bracket.
This is a genuine AirTAC part. The GFR filter-regulator family is published in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, standard or low-pressure regulator types, gauge and bracket options, and PT, G or NPT threads. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C15LJF2WG AirTAC Filter Regulator G1/2, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C1 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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. |
| (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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
On a fixture-clamping circuit that must hold well below standard line pressure, the low-pressure regulator type gives finer control in the lower part of the scale, while the 5 um element keeps sludge and scale out of the clamping cylinders and check valves.
Feeding diverters, stop gates and small actuator banks on a packaging conveyor, the combined filter and regulator in one G1/2 body saves panel space, and the differential-pressure drain clears accumulated condensate without an operator walking the line.
Analyser enclosures and pneumatic transmitters on a process skid need clean, steady, low-pressure air. The 5 um grade protects sensitive instrument components, the square psi gauge gives a direct local reading, and the metal bowl suits a supervised indoor installation.
Size and port set the capacity envelope: this unit is size 300 with a 1/2 inch port, one step up from 1/4 and 3/8 in the same family, so step up to 400 or 600 if your circuit may grow. Choose the drain to match maintenance access: differential-pressure (as coded here) needs no operator, automatic drains on a cycle, and manual drains suit attended stations. The 5 um element (code W) suits instruments, valves and painting where the 40 um standard grade is too coarse; the low-pressure regulator type suits circuits running below standard working pressure - its exact range is not published, so confirm it with us. The square psi gauge is embedded as coded; an external round gauge with MPa, psi or bar scale is optional. Thread: PT is the AirTAC standard, while G (BSPP, as coded here) and NPT are catalogue options to order. Bracket: this code omits it, so add a bracket if the unit will be panel- or wall-mounted. Because flow is published as curves and not a single rated figure, send us your application details and we will confirm sizing against the datasheet before you order.
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 the GFR series as curves, not as a single rated number, so we do not quote a l/min, m3/h or SCFM figure. Send us your line pressure and the flow your application needs, and we will confirm the correct size from the datasheet curves on request before you order.
The L in the code selects the low-pressure regulator type, intended for circuits that run below standard working pressures. Its exact adjustment range is not published in the catalogue sheet, so confirm it with us for your setpoint. Everything else in this code is standard GFR300: G1/2 port, 5 um (W) element, differential-pressure drain, square psi gauge, no check valve and no bracket.
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.