The AirTAC GFR30008MJF2WTK AirTAC Filter Regulator NPT1/4 5um 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 GFR30008MJF2WTK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This configuration is built with a 1/4 in NPT port, a fine 5 um filter element, a manual drain for emptying the PC bowl, an embedded square gauge reading in psi, and a built-in reverse (check) valve that holds the downstream setting if upstream pressure is lost. It ships without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the regulation range for this manual-drain version is 0.05-0.9 MPa (7-130 psi), and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, PT/G/NPT threads, 40 um or 5 um filtration, differential-pressure, automatic or manual drains, gauge style and scale, and optional brackets. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR30008MJF2WTK AirTAC Filter Regulator NPT1/4 5um |
|---|---|
| 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. |
| J | Supplied without bracket. |
| (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) |
Point-of-use conditioning for the air feeding pneumatic clamps and fixtures on a machining cell: the 5 um element protects the clamp cylinders from particles and condensed water while the regulator holds a steady clamping pressure.
Conditioning the air line to spray guns and air-assisted applicators in a finishing shop, where clean, dry, pressure-stable air is needed at the gun and the check valve helps hold the setting during supply dips.
Feeding the diverting, gating and pusher cylinders on a packaging conveyor, with the filter-regulator mounted at the line drop so operators can set and read the working pressure locally in psi.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with a 1/4 in NPT port, and larger sizes carry larger ports and more flow. Drain type is a real choice: manual (this unit, and the version with the widest 0.05-0.9 MPa adjustment range), automatic, or the differential-pressure default. Filter grade is 40 um standard or 5 um fine (this unit is W, 5 um) where finer particle control matters. Gauge options are the embedded square gauge or an optional external round gauge, in MPa, psi or bar scales - this unit is square, psi. Thread is PT as standard with G (BSPP) and NPT as catalogue options - this unit is NPT. Brackets are optional (this unit has none, code J). Flow is published as curves, not a single rating, so please 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 GFR series as curves rather than a single rated figure, so there is no one rated flow number we can honestly quote. Tell us your application and required flow, and we will confirm the datasheet curve figures for this 1/4 in, size 300 unit on request.
The M in the code selects a manual drain: condensate collected in the PC bowl is emptied by hand rather than automatically. It also gives the widest regulation range for this family, 0.05-0.9 MPa (7-130 psi), compared with 0.15-0.9 MPa (20-130 psi) on the automatic and differential-pressure drain versions. If you cannot rely on regular drain checks, ask about the automatic-drain variant.
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.