The AirTAC GFR300C10ALJC2G AirTAC Filter Regulator G3/8 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 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 GFR300C10ALJC2G is a 300-size filter regulator that removes water and particulate from compressed air and sets downstream pressure in a single body. This configuration is built around a G3/8 (BSPP) port with G thread, the low-pressure regulator type for circuits that run below standard regulating ranges, a 40 um filter element, and an automatic drain that bleeds collected condensate from the metal bowl without manual attention. It ships with an external round gauge reading in psi, and no mounting bracket and no reverse/check valve are fitted.
This is a genuine AirTAC part from the GFR range, which spans sizes 200, 300, 400 and 600 with port options from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, a 40 um standard or 5 um (W) element, square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR300C10ALJC2G AirTAC Filter Regulator G3/8 Low-Pressure |
|---|---|
| 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) |
Settling a stable, reduced supply pressure to atomizing air and air-assist lines on a paint spray booth, with the automatic drain keeping condensate out of the finish.
Filtering plant air and holding a low setpoint to clamping fixtures and swing clamps on a CNC cell, where the psi gauge gives operators a direct readout at the fixture.
Conditioning air to low-pressure pop-up diverters, stoppers and pusher cylinders on a parcel or carton conveyor line, with automatic drainage for around-the-clock running.
Start with the port step: this unit is size 300 with a G3/8 port, so match it to line plumbing of the same nominal size and let the required air demand drive whether you step up to size 400 or 600. Because this is the low-pressure (L) type, choose it where the working pressure sits below what a standard regulator is intended for; the exact regulating range for the low-pressure variant is not published, so confirm it with us against your setpoint. The 40 um element suits general plant air; specify the W variant if you need 5 um filtration. The automatic drain suits unattended or hard-to-reach installations, while manual and differential-pressure drains remain available in the family. The fitted round gauge reads in psi; square gauges and MPa or bar scales are alternatives. Thread is G (BSPP) here, with PT as the catalogue standard and NPT orderable. No bracket is fitted on this code, so plan a rigid pipe mounting or add a bracket variant. Flow is published as curves, not a single rating, so ask us to confirm sizing 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 the GFR series as curves rather than a single rated figure, so we do not quote a l/min, m3/h or SCFM number. Tell us your inlet pressure, setpoint and expected air demand and we will confirm the sizing from the datasheet curves on request before you order.
The A in the code means the metal bowl drains collected condensate automatically, so there is no manual drain valve to operate. The L means this is the low-pressure regulator type, intended for circuits running below standard regulating ranges; its exact range is not published, so confirm it with us. This code also carries a round psi gauge, a 40 um element, G3/8 thread, and no bracket or check valve.
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.