The AirTAC GFR300C10LJC2WK AirTAC Filter Regulator PT3/8, 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 GFR300C10LJC2WK is a GFR-series filter regulator: one body that removes water and particulate from compressed air and then regulates the downstream pressure. This configuration is size 300 with a PT3/8 port, a 5 um filter element (the finer of the two published grades), a metal bowl with differential-pressure drain, and the low-pressure regulator type. A round gauge scaled in psi is fitted, a check valve is built in to block reverse flow, and the unit is ordered without a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and a choice of drain type, 40 um or 5 um filtration, gauge style and scale, G (BSPP) or NPT thread options, and bracket or no-bracket mounting. 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 sizing and datasheet figures for your application.
| Model | GFR300C10LJC2WK AirTAC Filter Regulator PT3/8, 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) |
Clean, regulated supply air at a press station: the 5 um element strips water and fine particles before they reach the cylinder valves, and the low-pressure regulator holds the working pressure the tooling was set up for, with the psi gauge readable at a glance.
Filter and regulate the air feeding stoppers, pushers and clamp cylinders along a packaging conveyor. The built-in check valve blocks reverse flow back through the unit, and the round psi gauge gives operators a clear setpoint on the line.
Point-of-use treatment at a paint booth drop: the 5 um grade cleans the air ahead of the gun circuit while the regulator sets the atomizing pressure and the round gauge shows it in psi for repeatable finish work.
Size and port are the first decodable choice: 200, 300, 400 and 600 step up in port and flow capacity, and this unit sits at size 300 with a PT3/8 port. Drain type is a real decision on any unit with a bowl: differential-pressure drain (this configuration), automatic drain, or manual drain. Filtration is 40 um standard or 5 um with the W code - this unit carries the 5 um element. Gauge choices are the embedded square gauge or an external round gauge, scaled in MPa, psi or bar; this unit has the round psi gauge. Thread is PT as standard with G (BSPP) and NPT as order options, and the mounting bracket is omitted on this code (J). Because AirTAC publishes flow as curves rather than a single rated figure, 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 GFR300 flow as curves, not as a single rated number, so we do not quote a figure here. Tell us your application and we will confirm the flow and the full datasheet figures on request before you order.
The W code selects the finer 5 um filtration grade instead of the 40 um standard, and the L code selects the low-pressure regulator type. Its exact adjustment range is not published in the material we hold, so we 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.