The AirTAC GFR300C10ALJF1T AirTAC Filter Regulator NPT3/8 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 GFR300C10ALJF1T is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration carries a 3/8 in NPT port, a 40 um standard filter element, an automatic drain that expels condensate from the metal bowl without manual intervention, and a low-pressure regulator type for circuits fed at reduced supply pressure. An embedded square gauge with MPa scale is fitted for setting and monitoring downstream pressure, and no reverse/check valve is included. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. The unit is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with matching port sizes, a choice of automatic, manual or differential-pressure drains, an optional 5 um element (code W), gauge scale options, and G (BSPP) or NPT thread variants alongside the PT standard. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and flow figures for your application on request.
| Model | GFR300C10ALJF1T AirTAC Filter Regulator NPT3/8 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) |
Filtering and regulating the shop-air feed to workpiece clamps and fixture cylinders on a machining centre, where the low-pressure type lets the clamp circuit run at a reduced, stable setting below full line pressure.
Conditioning the air supplied to sorting and diverting cylinders on a packaging conveyor, with the automatic drain clearing condensate from the bowl so the downstream valves and actuators stay free of water and grit.
Supplying clean, regulated air to the grippers and pushers of a lab automation or sample-handling rig, where the built-in MPa gauge gives operators a clear local reading of the set pressure.
Start with size and port: the 300 size with its 3/8 in port suits mid-range supply lines, and the larger the size, the larger the port and the flow capacity - match the size step to the air demand of the circuit rather than oversizing on guesswork. Because flow for this family is published as curves and not as a single rated number, ask us to confirm sizing against your application before ordering. Then settle the decodable options: this unit has the automatic drain (manual and differential-pressure drains are the alternatives), the 40 um standard element (choose the 5 um W option where finer filtration is needed), the low-pressure regulator type (the exact adjustment range for this type is not published - confirm it with us), and the embedded square gauge with MPa scale (an external round gauge with MPa, psi or bar scale is available). Thread is NPT here; PT is the AirTAC standard and G (BSPP) is also a catalogue option. A mounting bracket is optional - this configuration ships without one.
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 rated flow, Cv or l/min number. Tell us your application and line conditions and we will confirm the flow figures from the datasheet on request before you order.
The automatic drain expels collected condensate from the metal bowl on its own, so no one has to bleed the bowl by hand - useful on lines that run unattended. The catalogue alternatives are a manual drain (you drain it yourself) and a differential-pressure drain; this model is supplied with the automatic drain fitted.
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.