The AirTAC GFR30008F2K AirTAC Filter Regulator PT1/4, 40 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 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 GFR30008F2K is a 300-size filter regulator that removes water and particulate from compressed air and sets downstream pressure in a single body. This configuration is tapped PT1/4 (1/4 in), carries the standard 40 um filter element, and drains condensate by differential pressure, so the bowl empties automatically as flow passes through. The regulator covers a 0.15-0.9 MPa (20-130 psi) adjustment range, an embedded square gauge graduated in psi is fitted, a reverse/check valve is installed, and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits this 300 size; only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port options from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drain, a 5 um element option (code W), gauge scale choices, and G or NPT thread variants to order. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application.
| Model | GFR30008F2K AirTAC Filter Regulator PT1/4, 40 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (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 — square, 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 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. |
| 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 filtered, pressure-set air to a machining centre's pneumatic tool clamps and tool-change cylinders, with the check valve holding the set circuit if upstream supply dips.
Conditioning the air feeding wrapper and cartoner cylinders on a packaging line, where the differential-pressure drain keeps condensate off the actuators without daily bowl attention.
Supplying clean, regulated air to conveyor divertor and stopper cylinders on a distribution line, with the psi gauge giving operators a visible set point at the station.
Pick the size and port against the air demand of the circuit: the 300 size with its PT1/4 port sits in the middle of the GFR range, with smaller 200 and larger 400/600 steps either side. Choose the drain to match access: differential-pressure (this unit) drains itself with flow, automatic drains on a schedule of its own, and manual suits attended installations. The 40 um element is the standard grade; specify the 5 um W option where finer filtration is needed. The fitted square gauge reads in psi; MPa and bar scales and an external round gauge are alternatives. PT is the standard thread, with G (BSPP) and NPT available to order, and the bracket is included on this code.
Because flow for this series is published as curves rather than a single rated figure, send us your application details 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 GFR series as curves, not as a single rated number, so there is no one figure we can quote. Send us your line pressure, downstream demand and allowable pressure drop, and we will confirm the sizing from the datasheet on request before you order.
The K means a reverse/check valve is fitted, so downstream pressure is held if the upstream supply is lost. The blank drain position on this code is the differential-pressure type: condensate is expelled from the PC bowl automatically as air flows through, with no manual draining needed in normal operation.
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.