The AirTAC GFR300C10LJC2K AirTAC Filter Regulator PT3/8 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 GFR300C10LJC2K is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation in a single body, sized for a PT3/8 port. This configuration carries the standard 40 um filter element with a differential-pressure drain bowl, the low-pressure regulator type, an external round gauge scaled in psi, and a built-in reverse (check) valve that holds downstream settings when upstream pressure is lost. It is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with port options from 1/8 to 1 inch, a choice of drain type, 40 um or 5 um (W) filtration, gauge style and scale, PT, G or NPT threads, and bracket options. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet for your application before ordering.
| Model | GFR300C10LJC2K AirTAC Filter Regulator PT3/8 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) |
Filtered, regulated air to clamp cylinders on a CNC fixture, with the check valve holding the clamp circuit steady if upstream supply dips during a tool change.
Conditioning the air feed to spray or atomising heads that run at reduced pressure, where the 40 um element keeps particulates out of the fluid path and the psi gauge gives operators a direct read.
Supplying the actuator bank on a carton packing line, with the differential-pressure drain clearing condensed water from the compressed-air line during production runs.
Start with the port step: this unit is the size 300 body on a PT3/8 connection; step up to size 400 or 600, or down to 200, if your line needs a different flow path - we will check the published flow curves against your demand on request. Choose the drain to suit access: differential-pressure (as here, drains on a set pressure drop), automatic (A) for unattended drains, or manual (M) where an operator drains on schedule. Filtration is 40 um standard; specify the W code for 5 um where finer protection is needed. The round gauge here reads in psi; square embedded gauges and MPa or bar scales are the other catalogue choices. Thread is PT as standard - G (BSPP) and NPT are order options - and the J code here means no bracket, so plan your own mounting. Note this is the low-pressure (L) regulator type; we will confirm its exact adjustment range from the datasheet on request.
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 figure, so we do not quote a l/min or SCFM number. Tell us your line pressure and air demand and we will confirm the sizing from the datasheet on request.
The L code selects the low-pressure regulator variant of the GFR300 rather than the standard type, suited to circuits that run at reduced pressures. Its exact adjustment range is not published in the summary data, so we will confirm it from the datasheet on request.
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.