The AirTAC GFR300C08LF2TK 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 GFR300C08LF2TK is an AirTAC GFR filter regulator: one body that removes water and particulate from compressed air and reduces the pressure supplied downstream. This 300-size unit is tapped NPT 1/4 in and is the low-pressure (L) type, intended for circuits that run at reduced set pressures. It carries the standard 40 um filter element, a differential-pressure drain, a polycarbonate bowl, an embedded square gauge scaled in psi, a reverse/check valve (K) and a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, PT, G or NPT threads, automatic, manual or differential-pressure drains, 40 um or 5 um (W) filtration, square or round gauges with MPa, psi or bar scales, and bracket or no-bracket (J) builds. AirTAC publishes flow as curves rather than a single rated figure, so we do not quote one here; ask us and we will confirm the datasheet figures, including the low-pressure adjustment range, for your application.
| Model | GFR300C08LF2TK 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 reduced-pressure air to the clamp and hold-down cylinders on a packaging conveyor, where the low-pressure regulator type keeps actuator forces gentle on cartons and film.
Supplying filtered, reduced-pressure air to pneumatic clamps on a machining fixture, with the 40 um element protecting the clamp valves from water and swarf carried in the shop air.
Conditioning shop air on a laboratory or test bench that needs a stable, reduced supply pressure, with the square psi gauge giving a direct local readout and the check valve (K) fitted as coded.
Size and port are the first choices: 300 with a 1/4 in NPT port sits mid-range; step to 200 for lighter circuits or to 400/600 when the line needs more flow, checking the published flow curves against your demand. Drain is differential-pressure in this configuration; automatic (A) and manual (M) variants exist if you prefer hands-off or manual purging. Filtration is the standard 40 um element; order the W option for 5 um when finer particulate removal matters. The gauge here is the embedded square type scaled in psi; round gauges and MPa or bar scales are alternatives. Thread is NPT on this unit - PT is the standard and G is also a catalogue option. The bracket is included; J deletes it. Because flow is published as curves, not a single rating, 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 flow for the GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your working pressure and air demand and we will confirm the datasheet curve figures for this 300-size, 1/4 in unit before you order.
L marks the low-pressure regulator type. This unit is built for circuits that operate at reduced set pressures rather than the full standard range; AirTAC does not publish the exact adjustment range for this variant, so ask us to confirm it from the datasheet. The rest of the code decodes as: 300 size, 1/4 in NPT port, square psi gauge, NPT thread and a fitted check valve.
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.