The AirTAC GFR300C08LF3T AirTAC Filter Regulator NPT1/4 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 AirTAC GFR300C08LF3T is a size 300 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration is 1/4 in NPT thread, low-pressure type, with the standard 40 um filter element, a differential-pressure drain on the metal bowl, a square gauge scaled in bar, and a mounting bracket included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Because this is the low-pressure (L) type, the exact regulation range differs from the standard unit - ask us and we will confirm it from the datasheet.
This is a genuine AirTAC part from the GFR300 series. The GFR family is available in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, a 5 um (W) element option, gauge scale choices, and PT, G or NPT thread options. Flow is published as curves rather than a single rated figure, so we confirm flow and datasheet figures on request before you order.
| Model | GFR300C08LF3T AirTAC Filter Regulator NPT1/4 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Feeding pneumatic clamps on a machining fixture that hold at reduced regulated pressure, with the 40 um element keeping pipe scale and compressor carryover out of the valve stack.
A point-of-use filter-regulator station on a packaging line, cleaning the shop air supply and dropping header pressure to suit low-pressure actuators, seal bars and hold-down cylinders.
Supplying clean, regulated low-pressure air to instrument panels and pilot-process skids, where the bar-scale square gauge is read directly at the panel and the bracket gives tidy mounting.
Size and port step up from 200 through 600, so match the 1/4 in NPT port of this unit against the air consumption of the machine it feeds - and let us check the flow curves against your demand before ordering. Choose drain type to suit access: differential-pressure (as fitted here) drains automatically under flow, automatic (A) drains on shut-off conditions, and manual (M) suits attended installations. Filter grade is 40 um standard; specify W for the 5 um element where downstream equipment needs finer filtration. Gauge scale (MPa, psi or bar) and thread (PT standard, G or NPT to order) are decodable choices, and the low-pressure (L) type versus standard type is the key regulator decision for this family.
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 G-series flow as performance curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your line pressure and the air consumption of the machine you are feeding, and we will confirm the correct size against the datasheet curves before you order.
L is the low-pressure type of the GFR300 regulator. It is selected where the downstream equipment runs at lower regulated pressures than a standard unit is set for. The exact regulation range for the low-pressure type is not a published single figure, so we confirm it from the datasheet on request; the standard type remains available if your range is conventional.
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.