The AirTAC GFR300C10ALJC3TK AirTAC Filter Regulator NPT3/8 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 GFR300C10ALJC3TK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit is threaded NPT3/8, is the low-pressure type, and carries a 40 um filter element with an automatic drain that expels collected condensate without an operator having to intervene. A round gauge with bar scale is fitted so the set pressure can be read directly, and a reverse (check) valve is included. The bowl is metal, no mounting bracket is supplied with this configuration, and the unit is rated for a maximum inlet pressure of 1.0 MPa (145 psi) at -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, and can be ordered with manual or differential-pressure drains, a finer 5 um element (code W), square or round gauges with MPa, psi or bar scales, G or NPT threads, and bracket options. Flow is published as curves rather than a single rating, so ask us to confirm sizing and any datasheet figure for your application before ordering.
| Model | GFR300C10ALJC3TK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
Feeds the clamp cylinders of a pneumatic press where the operator sets a lower holding pressure than the shop air main delivers. The 40 um element keeps the directional valves clean, the automatic drain clears condensate between cycles, and the round bar gauge shows the set point at a glance.
Point-of-use conditioning for the actuator bank of a packaging line. The filter regulator cleans and regulates air where the machine connects to the drop, the automatic drain keeps moisture out during long shifts, and the fitted check valve stops air flowing back through the unit when the upstream supply is isolated.
Mounted in the preparation panel of a spray booth, this unit conditions and regulates the air feeding atomizing and actuation valves. The 40 um element protects the panel's fine-control valves, the bar-scale gauge lets the finisher verify the setting, and the metal bowl suits a fixed installation.
Within GFR300, the port step is the main sizing lever: the family runs from 1/8 to 1 inch, and we will check the published flow curves against your line's demand before you order. Drain choice matters in daily use: automatic (this unit) handles condensate by itself, manual needs an operator, and differential-pressure drains as the element loads up. Filter grade is 40 um standard or 5 um (code W) for finer protection; the gauge is offered embedded square or external round with MPa, psi or bar scales; thread is PT as standard with G and NPT as order options; and brackets are optional. This unit is the low-pressure type - its exact adjustment range is not published in the catalogue, so confirm your set point with us.
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 there is no one number we can honestly quote. Send us your line's flow and pressure demand and we will confirm sizing from the datasheet before you order.
L marks the low-pressure regulator variant; its exact adjustment range is not published in the catalogue, so confirm your set point with us. The trailing K means a reverse (check) valve is fitted, so air will not flow back through the unit. This configuration also carries an automatic drain, a 40 um element and a round bar-scale gauge.
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.