The AirTAC AirTAC GFR30008C2W Filter Regulator 1/4 in PT 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 GFR300 is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This unit is sized at 300 with a 1/4 in PT port and carries the W option, a 5 um filter element for finer particle capture than the standard 40 um grade. The differential-pressure drain bleeds collected condensate away as air flows through the unit, the fitted round gauge reads in psi, and the standard regulator covers 0.15-0.9 MPa (20-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi). The bowl on this 300 size is polycarbonate, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans 200, 300, 400 and 600 sizes with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um elements, embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow figures for this family are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application before ordering.
| Model | AirTAC GFR30008C2W Filter Regulator 1/4 in PT 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (PT 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 | 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. |
|---|---|
| 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. |
| (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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feed the pneumatic clamps, tool-changer cylinders and chip-blow nozzles on a machining centre from a single filter regulator, so chips and condensate stay out of the valves while clamp pressure is held at the set point through the shift.
Supply carton sealers, case erectors and pick-and-place cylinders on a packaging conveyor with filtered, regulated air, keeping water and grit out of the directional valves and holding actuator pressure steady as stations fire in sequence.
Feed spray guns and coating applicators in a finishing booth with air stripped of fine particles and held at a stable regulated pressure, so the finish quality depends on the process settings rather than on drifting line pressure.
Start with the port step: the 300 size with a 1/4 in PT port suits circuits where a compact filter regulator must pass the air a 1/4 in line demands - match the size to the flow the application needs rather than upsizing blindly. Choose the drain to match access: differential-pressure (this unit) drains with flow, automatic drains regardless of flow, and manual suits attended installations. Pick the element grade for downstream sensitivity: 5 um (this unit, code W) protects finer components, while 40 um is the general-purpose standard. Gauge scale (MPa, psi or bar), thread (PT standard, G or NPT to order) and bracket are the remaining choices. Flow is published as curves, not a single rating, so send us your application 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 family as curves rather than a single rated figure, so there is no one number we can honestly quote. Tell us your line pressure, downstream demand and duty, and we will confirm the sizing from the datasheet curves for your application before you order.
The W code in GFR30008C2W selects the 5 um element, which captures finer particles than the 40 um standard grade - useful ahead of sensitive valves, actuators or spray equipment. If your application only needs general-purpose protection, the same body is available with the 40 um grade by omitting the W code.
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.