The AirTAC GFR300C10LC3TK 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 GFR300C10LC3TK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation in one body, in size 300 with a 3/8 in NPT port. This configuration is the low-pressure regulation type, fitted with a 40 um filter element, a differential-pressure drain, an external round gauge scaled in bar, a reverse/check valve and a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing). At this 300 size the bowl is polycarbonate (PC); only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family runs from size 200 to 600 with ports from 1/8 to 1 in, and options across the range include 5 um filtration (code W), automatic or manual drains, embedded square or external round gauges with MPa, psi or bar scales, G (BSPP) or NPT threads in place of the PT standard, and bracket choices. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure for your application before ordering.
| Model | GFR300C10LC3TK 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 supply to clamping and holding fixtures on an assembly line where the low-pressure regulator type matches circuits set below the pressures a standard regulator is chosen for.
Conditioning the air feeding cylinders and actuators on a packaging line: the 40 um element catches pipe scale and particulate while the regulator holds a steady supply pressure to the machine.
Providing filtered, regulated air to a laboratory or quality-control test bench, with the round bar-scale gauge giving a direct pressure readout at the rig and the check valve holding the setting against backflow.
The real choices on this family are the size/port step, the drain, the filter grade, the gauge and the thread. This unit sits at size 300 with an NPT3/8 port; step up to 400 or 600 if your circuit needs more capacity - the catalogue publishes flow as curves per size rather than one rating, so send us your demand and we will confirm the right size against the datasheet. Drain: this code uses the differential-pressure drain; automatic (A) and manual (M) are order options. Filter grade: 40 um as fitted here, with 5 um (code W) where finer filtration is needed. Gauge: the round external gauge on this unit reads in bar; an embedded square gauge and MPa or psi scales are the alternatives. Thread: PT is the AirTAC standard and G (BSPP) or NPT are ordered options - this unit is the NPT version. Bracket included.
Note that this is the low-pressure (L) regulator type; the exact adjustment range for the low-pressure version is not published in the material we hold, so confirm the set-pressure window with us 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, not as a single rated figure, so we do not quote a number here. Tell us your circuit's flow demand and we will confirm the correct size and the datasheet figures for you before you order.
This code carries the differential-pressure drain, the GFR default. If your application calls for a different drainage method, automatic (code A) and manual (code M) drains are catalogue options on the same family.
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.