The AirTAC GFR30008F3TK AirTAC Filter Regulator NPT1/4 Square Gauge 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 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 GFR30008F3TK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air with a 40 um element, drains collected condensate automatically by differential pressure, and holds your set downstream pressure within a 0.15-0.9 MPa (20-130 psi) adjustment range. This configuration is 1/4 in NPT thread, carries an embedded square gauge scaled in bar, includes a reverse/check valve to hold downstream pressure, and comes with a mounting bracket.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans 200, 300, 400 and 600 sizes with port options from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, a 5 um (code W) filter element option, gauge scale choices, and G, NPT or PT threads. Flow is published as curves rather than a single rating, so we confirm datasheet figures on request.
| Model | GFR30008F3TK AirTAC Filter Regulator NPT1/4 Square Gauge |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT 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 — square, bar 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeding clean, regulated air to a CNC spindle and tool-change circuit: the 40 um element strips water and chips-laden particulate before the valves, the regulator holds a steady set pressure, and the check valve keeps the circuit pressurised if supply dips.
Supplying carton sealers and pick-and-place cylinders on a packaging line, where fluctuating plant air upsets cycle consistency. The GFR30008F3TK filters the line air and locks the working pressure so the actuators repeat their stroke the same way each cycle.
Conditioning the air feed to lab analysers and pneumatic sample-handling gear, where moisture carryover and pressure drift corrupt results. The combined filter-regulator cleans the air, holds a stable setpoint on the bar gauge, and the check valve prevents backflow into the instrument.
Size and port step up together: 200, 300, 400 and 600 cover 1/8 to 1 inch, so pick the size whose flow curve covers your demand at your working pressure - ask us to check the curve before ordering. This unit is 1/4 in NPT; G (BSPP) and PT are order options. Drain types: differential-pressure (this unit, drains only when the pressure drop across the element is high enough), automatic (drains continuously), or manual (you drain it). Element grade is 40 um standard; specify 5 um (code W) for finer protection. The embedded square gauge is scaled in bar here; MPa and psi scales and an external round gauge are available. A J code removes the bracket; this unit includes it.
Flow for this family is published as curves, not a single rated figure, so we do not quote a number here. 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR300 series as curves, not as a single rated figure, so we do not quote a number here. Tell us your working pressure and air demand and we will confirm sizing against the datasheet on request before you order.
The differential-pressure drain (the default, fitted here) discharges condensate only when the pressure drop across the 40 um element builds high enough, so it needs no attention in normal service. Choose automatic drain (code A) for continuous unattended drainage, or manual drain (code M) where you want to drain on demand - note the manual-drain version also widens the regulator adjustment range down to 0.05 MPa (7 psi).
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.