The AirTAC GFR300C08LC1T 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 GFR300C08LC1T is a GFR-series filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This size-300 unit has 1/4 in NPT ports, a 40 um filter element, a differential-pressure drain, a metal bowl and a low-pressure regulator fitted with a round MPa gauge; a mounting bracket is included. 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 spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options including manual or automatic drains, a 5 um element (code W), square or round gauges on MPa, psi or bar scales, G (BSPP) or NPT threads, and a reverse/check valve. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR300C08LC1T 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 filtered, regulated air to the cylinder and valve manifold of a carton-sealing or wrapping line, with the low-pressure regulator holding a gentle setting for sensitive actuators.
Supplying a workholding clamp circuit on a machine tool where clean, moisture-reduced air at a stable pressure below the main line prevents part marking and inconsistent clamp force.
Conditioning shop air for bench-top and pilot-scale test rigs that need particulate- and water-free air regulated well below main-line pressure, read on the round MPa gauge.
Size and port: the 200/300/400/600 step rises in port and flow capacity - this unit is size 300 with 1/4 in NPT ports, so step up to 400 or 600 when the line demands more air. Drain: differential-pressure is fitted here; automatic or manual drains can be ordered instead. Filtration: 40 um is standard; specify W for a 5 um element. Gauge: this configuration carries a round gauge on the MPa scale; psi or bar scales and an embedded square gauge are alternatives. Thread: PT is the AirTAC standard, with G (BSPP) and NPT as order options - this unit is NPT. A mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi). Flow is published as curves, not a single rating, so ask us to confirm sizing against your application 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 filter-regulator flow as performance curves rather than a single rated figure, so no one number is quoted here. Send us your line pressure, downstream demand and allowable pressure drop and we will confirm the sizing from the datasheet on request.
The L in the code marks the low-pressure regulator variant, intended for circuits held well below the 1.0 MPa (145 psi) maximum inlet pressure. The exact regulation range for this variant is not published in the sheet we work from, so we confirm it on request; standard-range GFR versions covering 0.15-0.9 MPa (20-130 psi) with differential-pressure or automatic drains are also available.
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.