The AirTAC GFR300C08LC2GK AirTAC Filter Regulator G1/4 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 GFR300C08LC2GK is a filter regulator: one body that removes water and particulate from compressed air and holds the downstream pressure at your set point. This unit is built on the 300 size with a G1/4 (BSPP) port, the 40 um standard filter element, a differential-pressure drain, and the L low-pressure regulator type. It comes with a round external gauge scaled in psi, a built-in reverse (check) valve, a mounting bracket, and a metal bowl.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options that include manual or automatic drains, a 5 um element (code W), square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the figures and the datasheet for your application before ordering.
| Model | GFR300C08LC2GK AirTAC Filter Regulator G1/4 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) |
On a CNC machining fixture, this filter regulator cleans the shop air and holds a low, stable clamp pressure so workpieces seat consistently cycle after cycle. The round psi gauge lets the setter read and verify the clamp setting directly.
Feeding hold-down jets and light actuation on a carton-sealing conveyor, the unit strips water that would otherwise mark cartons and regulates the low working pressure the line was designed around. The built-in check valve blocks reverse flow when upstream supply dips.
On a process skid, low-pressure actuated butterfly and ball valves need clean air at a steady pilot pressure. This filter regulator conditions the pilot line, and the psi gauge lets technicians confirm the set point during loop checks.
Choose the size by the port and flow step: sizes 200, 300, 400 and 600 map to ports from 1/8 to 1 inch, and the 300 size with a 1/4 inch port suits circuits built around a 1/4 inch connection. For the drain, differential-pressure (this unit) discharges accumulated water automatically as the pressure drop across the element rises; automatic drains run continuously and manual drains need a periodic twist. The standard element is 40 um; specify code W for the 5 um grade where finer filtration matters.
Gauges come as an embedded square type or an external round type, in MPa, psi or bar scales - this unit carries a round gauge scaled in psi. Thread is PT as standard, with G and NPT available as order options, and a mounting bracket is included unless you specify J. Because flow is published as curves rather than one rated number, send us your pressure and air demand and we will confirm sizing against the datasheet before you order.
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 rather than a single rated figure, so there is no one l/min or SCFM number we can quote honestly. Tell us your working pressure and air demand and we will read the curve and confirm the sizing from the datasheet on request.
L marks this as the low-pressure regulator type, intended for circuits set well below standard working pressure; the exact adjustment range is not published in the catalogue we use, so ask us to confirm it for your set point. C2 codes the external round gauge with a psi scale, and K means a reverse (check) valve is fitted. The unit also carries the 40 um standard element and a differential-pressure drain.
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.