The AirTAC GFR300C10LJC1T AirTAC Filter Regulator NPT 3/8 in 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.
GFR300C10LJC1T is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates the downstream pressure. This configuration is the size 300 unit with a 3/8 in NPT port, the low-pressure regulator type (L), a 40 um standard filter element, a polycarbonate bowl with differential-pressure drain, and a round gauge with MPa scale; it is ordered without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing).
It is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of drain (differential-pressure, automatic or manual), a 5 um (W) filter option, gauge style and scale, PT, G or NPT threads, and bracket options. Rated flow is published as curves rather than a single figure, so ask us to confirm sizing and datasheet figures for your application on request.
| Model | GFR300C10LJC1T AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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) |
On a pneumatic clamping fixture that calls for gentle holding pressure, this filter regulator cleans the supply line and holds the setpoint. The low-pressure type (L) is intended for circuits that never need full line pressure, with the round MPa gauge giving a local readout at the setpoint.
Installed at the drop feeding cylinders and directional valves on a small machining cell, the 40 um element catches pipe scale and condensed water before they reach the valves, while the regulator sets the working pressure the cell was designed around.
Conditioning the air drop that feeds sealing heads and actuator cylinders on a packaging line: the filter section removes water and particulate, the regulator section holds a steady pressure for consistent actuator strokes, and the round gauge lets operators verify the setting at a glance.
Size and port step up together: 200, 300, 400 and 600 map to ports from 1/8 to 1 in, so choose the size whose flow curve covers your air consumption - we can check the published curve against your application on request. Where a bowl is fitted you pick the drain: differential-pressure (this unit), automatic (A) or manual (M). Filter grade is 40 um standard or 5 um with the W code. Gauges are embedded square or external round, with MPa, psi or bar scales - this unit carries a round MPa gauge. Thread is PT as standard; G (BSPP) and NPT are order options, and NPT is what this code specifies. Brackets are optional, and this unit is supplied 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 filter-regulator flow as curves, not as a single rated figure, so we do not quote a l/min or SCFM number on the page. Send us your port size, working pressure and air consumption, and we will confirm the sizing from the datasheet on request before you order.
L marks the low-pressure regulator type: this variant is intended for circuits set well below full line pressure. Its exact adjustment range is not published, so confirm it with us on request. For reference, a standard-type GFR with differential-pressure drain adjusts 0.15-0.9 MPa (20-130 psi).
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.