The AirTAC GFR30008MF2WTK AirTAC Filter Regulator NPT1/4, 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR30008MF2WTK is an AirTAC GFR300 filter regulator: water and particulate filtration plus downstream pressure regulation in a single 300-size body with a 1/4 in NPT port. This configuration carries the fine 5 um filter element (code W), a manual drain for the polycarbonate bowl, an embedded square gauge reading in psi, a built-in reverse/check valve, and the mounting bracket. The standard regulator covers 0.05-0.9 MPa (7-130 psi), and maximum inlet pressure is 1.0 MPa (145 psi) with an operating temperature of -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is offered in 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, and with choices of drain type, 40 um or 5 um filtration, gauge scale, thread (PT standard; G and NPT as order options), bracket and check valve. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request.
| Model | GFR30008MF2WTK AirTAC Filter Regulator NPT1/4, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual 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 0.05 - 0.9 MPa (7 - 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| 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. |
| 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) |
Clean, regulated air for tool-clamp and chuck-actuation circuits on a machining centre, with the 5 um element protecting directional valves and the check valve holding clamp pressure during supply dips.
Point-of-use air prep at a spray booth or coating line, where the 5 um grade keeps water and fine particulate out of the finish and the regulator holds a steady atomising pressure.
Filter-regulated supply for the cylinders and vacuum generators on a cartoner or case packer, with the psi gauge giving operators a visible setpoint and the manual drain fitting the daily changeover routine.
Size and port step up together: 200, 300, 400 and 600, with ports from 1/8 in to 1 in, so pick the step that matches the air demand of the machine downstream. The 5 um element (code W) suits instruments, valves and paint work that need finer air than the standard 40 um; the manual drain suits installations where an operator can bleed the bowl on a routine walk-round. The embedded square gauge is fitted here with a psi scale (MPa and bar scales are also available), and the K code adds a reverse/check valve that holds downstream pressure if the supply is interrupted. Thread is NPT on this unit; PT is the standard and G is the other order option, and the bracket is included.
Because AirTAC publishes flow as curves and not as a single rated number, ask us to confirm sizing against your application before ordering.
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 as curves rather than a single rated figure, so we do not quote one number. Tell us your application and we will confirm the flow and sizing figures from the datasheet on request.
The manual drain means an operator bleeds collected water from the polycarbonate bowl as part of a routine check, instead of relying on an automatic or differential-pressure drain. The K code adds a reverse/check valve, which holds downstream pressure if the upstream supply is interrupted.
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.