The AirTAC AirTAC GFR30008F3WT Filter Regulator 1/4 in NPT, 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 series combines water and particulate filtration with pressure regulation in a single body. This GFR30008F3WT is configured for a 1/4 in NPT port, carries the optional 5 um filter grade for finer cleaning than the standard 40 um element, drains condensate by the differential-pressure method, and is fitted with an embedded square gauge reading in bar. The polycarbonate bowl allows a visual condensate check, a mounting bracket is included, and the standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi) at -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR300 size sits within the G-series range spanning sizes 200, 300, 400 and 600, with port options from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, and PT, G or NPT threads. AirTAC publishes flow as performance curves rather than a single rated figure, so we do not quote a flow number here; ask us and we will confirm the datasheet figures for your application on request.
| Model | AirTAC GFR30008F3WT Filter Regulator 1/4 in NPT, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT 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 — square, bar 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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 clean, regulated air to the valve manifold that drives the sealing and carton-forming cylinders on a packaging machine, with the 5 um element helping keep debris out of the valve seats.
Supply filtered, pressure-controlled air to the gripper and cylinder circuit of a robotic assembly cell, with the bar gauge giving the operator a local setpoint check at the cell.
Condition the air feeding spray guns in a paint or coating booth, using the 5 um grade ahead of the gun and the regulator to hold the atomising pressure the finish calls for.
Step through the G-series sizes (200/300/400/600) to match the port and flow path your line needs; this unit is the 300 size with a 1/4 in NPT port. The real choices for this family: keep the default differential-pressure drain or order automatic (A) or manual (M); choose 40 um standard filtration or the 5 um W grade fitted here; pick the gauge scale (MPa, psi or bar - this unit reads bar) and the thread (PT is the standard, with G and NPT as catalogue options to order). AirTAC publishes flow as curves, not a single rating, so send us your flow and pressure requirements 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 GFR300 as performance curves, not as a single rated figure, so we do not quote a number here. Send us your required flow and working pressure and we will confirm the datasheet curve for this 1/4 in NPT filter regulator at your conditions before you order.
The W in the code selects the optional 5 um filter grade in place of the 40 um standard, giving finer particulate removal for sensitive downstream equipment such as valves, cylinders and spray guns. Both grades are available across the GFR300 family, and the drain type, gauge scale and thread can be chosen independently of the grade.
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.