The AirTAC GFR300C08LC2WK AirTAC Filter Regulator 1/4 in PT, 5 um 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 GFR300C08LC2WK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds a regulated downstream pressure in a single body. This configuration is built around a 1/4 in PT port, a 5 um filter element (the finer of the two catalogue grades), and a differential-pressure drain that clears accumulated condensate automatically whenever line pressure falls. It is the low-pressure regulator type, fitted with an external round gauge reading in psi, a reverse/check valve that holds downstream pressure if the supply dips, and a mounting bracket. The polycarbonate bowl suits the -5 to 70 C (non-freezing) operating range at up to 1.0 MPa (145 psi) inlet pressure.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options that include 40 um or 5 um filtration, manual, automatic or differential-pressure drains, square or round gauges in MPa, psi or bar scales, a reverse/check valve, and G or NPT threads in place of the PT standard. We do not quote a single rated flow figure because AirTAC publishes flow as curves; ask us and we will confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C08LC2WK AirTAC Filter Regulator 1/4 in PT, 5 um |
|---|---|
| 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 paint guns and air-assisted sprayers, the 5 um element strips fine particulate and water carryover while the regulator holds the low, steady set pressure the gun needs for an even fan pattern.
On a cartoning or case-sealing line, the low-pressure type regulator supplies cylinders and air grippers that run at reduced set pressures, and the check valve keeps them from venting back if the supply dips.
At a bench drop feeding air screwdrivers and small clamps, the unit filters, regulates and shows line pressure on the psi gauge, while the differential-pressure drain keeps condensate out of the tools.
Size and port are the first decision: GFR300 with its 1/4 in PT port sits mid-range in the GFR line (sizes 200 to 600, ports 1/8 to 1 in), so step up or down according to the air demand of the equipment downstream. This unit carries the 5 um element rather than the 40 um standard - choose 5 um where the downstream machinery is sensitive to fine particulate. The differential-pressure drain needs no daily manual action; manual and automatic drains are the alternatives on other variants. The round psi gauge is fitted as coded; embedded square gauges and MPa or bar scales are the other catalogue choices. G and NPT threads can be ordered instead of PT, and the bracket is included.
One honest note on sizing: AirTAC publishes flow for this series as curves, not as a single rated figure, so we cannot truthfully quote a number here. Send us your application's air demand and we will confirm the correct size and the datasheet figures on request 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 we do not quote a l/min or SCFM number. Tell us your application's air demand and we will confirm the datasheet curve and correct sizing on request before you order.
The L in the code marks the low-pressure regulator type, intended for applications that run at reduced downstream set pressures. The exact adjustment range for this variant is not published in the material we hold, so we confirm it from the datasheet on request. Everything else decodes normally: 1/4 in PT port, 5 um element, differential-pressure drain, round psi gauge and a fitted reverse/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.