The AirTAC GFR30008MLF1WTK 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 AirTAC GFR30008MLF1WTK is a GFR-series filter regulator: one body that removes water and particulate from compressed air and then reduces and holds the working pressure downstream. This 300-size unit is built for a 1/4 in NPT port. It carries the finer 5 um filter element (code W, against the 40 um standard), a manual drain on the polycarbonate bowl, a low-pressure regulator type, an embedded square gauge scaled in MPa, and a built-in check valve that blocks backflow through the unit. A mounting bracket is included.
This is a genuine AirTAC part from the GFR300 series. The GFR line spans sizes 200, 300, 400 and 600, with ports from 1/8 to 1 in, PT as the standard thread and G or NPT to order, drain choices of differential-pressure, automatic or manual, 40 um or 5 um filtration, and gauge or no-gauge builds. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application.
| Model | GFR30008MLF1WTK 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 | Low-pressure 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, MPa 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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)). |
| L | Low-pressure 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. |
| 1 | Gauge scale: MPa. 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) |
Feeding pick-and-place grippers and small cylinders on a packaging line, where the 5 um element protects the compact directional valves and the regulator holds the reduced working pressure the gripper circuit was set up for.
Supplying spray guns and finishing stations that run below standard line pressure. The low-pressure regulator type of this unit matches those settings, and the manual drain lets the operator clear condensate at the start of each shift.
Regulating supply to a clamp circuit where the built-in check valve blocks backflow through the unit, helping the circuit hold its set pressure if the upstream supply dips during a cycle.
Choose the size by the port and flow step: 200 covers the smallest ports, 300 (this unit) takes 1/4 in here, and 400 and 600 step up for larger ports and higher demand - match the port to your piping and let us confirm the flow curve against your consumption. Drain is a real choice on this family: manual as fitted here (you open it on a servicing schedule), automatic, or the differential-pressure default. Element grade is 40 um standard or 5 um (W) as fitted here for finer protection of downstream equipment. The gauge is the embedded square type scaled in MPa; external round gauges and psi or bar scales are options. Thread is NPT on this unit, with PT as the standard and G to order, and the mounting bracket is included. Because flow is published as curves rather than one rated number, send us your application details and we will confirm sizing 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 GFR flow as curves, not as a single rated figure, so we do not quote a number here. Tell us your working pressure and air consumption and we will confirm the datasheet curve for this 1/4 in, 5 um, low-pressure configuration before you order.
The bowl on this unit drains manually: you open the drain during servicing. The alternatives are an automatic drain that empties itself and the differential-pressure default that drains on a pressure drop. Manual suits attended lines with regular maintenance rounds; if the unit will sit unattended, ask us about the automatic-drain variant of the same size.
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.