The AirTAC GFR30008C2WGK AirTAC Filter Regulator G1/4 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/4" 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 GFR30008C2WGK is a GFR-series filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure steady. This size 300 unit has a G1/4 port, a 5 um element (finer than the standard 40 um grade), a differential-pressure drain that discharges condensate as the element loads up, a round gauge reading in psi, and a built-in reverse (check) valve that holds downstream pressure if the supply drops. Maximum inlet pressure is 1.0 MPa (145 psi), the regulation range is 0.15-0.9 MPa (20-130 psi), and the working temperature range is -5 to 70 C, non-freezing. The polycarbonate bowl lets you see the condensate level.
This is a genuine AirTAC part. The G-series filter regulator family runs from size 200 to 600 with ports from 1/8 to 1 inch, and can be ordered with automatic or manual drain, 40 um or 5 um filtration, MPa, psi or bar gauge scales, and G or NPT threads (PT is the standard). Flow is published as curves rather than one rated figure, so ask us and we will confirm the datasheet numbers for your line.
| Model | GFR30008C2WGK AirTAC Filter Regulator G1/4 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (G (BSPP) thread) |
| Filtering grade | 5 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 — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
|---|---|
| 08 | Port size PT1/4". 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Filtered, regulated air to the clamps and air-blast nozzles on a machining centre; the 5 um element and a steady downstream setpoint help fixtures grip and release consistently.
Feeding divert gates and pusher cylinders on a packaging conveyor, where the fitted check valve holds actuator position through a brief supply interruption.
A regulated drop feeding small actuators and air tools at an assembly bench, with the local psi gauge giving operators a visible setpoint at the station.
Size 300 with a G1/4 port suits lines whose pipework and air demand sit in that band; step up to 400 or 600 for larger ports and more flow, or down to 200 for compact drops. The 5 um element on this model (code W) is the choice when downstream equipment needs finer filtration than the standard 40 um grade. The differential-pressure drain needs no attention each cycle; automatic drain suits unattended discharge and manual drain suits on-demand draining. The round gauge here reads in psi, with embedded square gauges and MPa or bar scales as alternatives. PT is the standard thread, G and NPT are order options, and a mounting bracket is included. Because flow is published as curves rather than a single rated figure, send us your 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this family as curves, not as a single rated figure, so we do not quote a number here. Send us your required flow and line pressure and we will confirm sizing against the datasheet on request.
C2 is the round external gauge scaled in psi, W is the 5 um filter element instead of the standard 40 um grade, and K means a reverse (check) valve is fitted, which blocks backflow and holds downstream pressure if the upstream supply is cut. Drain is the differential-pressure type and a mounting bracket is included.
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.