The AirTAC GFR30008MNWT AirTAC Filter Regulator 1/4 in NPT 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 GFR30008MNWT is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and sets downstream pressure. This configuration is the 300 size with a 1/4 in NPT port, the 5 um filter element (code W) for finer filtration than the standard 40 um grade, a manual drain on the bowl, and the standard regulator with an adjustment range of 0.05-0.9 MPa (7-130 psi). No gauge is fitted (code N), so a separate gauge is needed to read the set pressure. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl lets you see the condensate level, and the manual drain is emptied by hand.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, gauge options and PT, G or NPT threads. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR30008MNWT AirTAC Filter Regulator 1/4 in NPT |
|---|---|
| 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 | Not fitted |
| Reflux valve | Not fitted |
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. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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. |
| (blank) | No reverse-flow valve (the default). |
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) |
Feeds clean, regulated air to the pneumatic cylinders that clamp, push and divert packs on a packaging conveyor line, with 5 um filtration protecting seals from fine particulate.
Supplies the air clamps and swing cylinders on a benchtop CNC or machining fixture, holding a steady set pressure so clamping force stays consistent part to part.
Mounted at a workshop air drop to filter and regulate the line feeding impact drivers, air ratchets and blow guns, with the manual drain emptied as part of daily shop routine.
Choose the size and port step against the air consumption of the equipment being supplied - the 300 size with a 1/4 in NPT port suits compact machine supply drops, and larger sizes (400, 600) carry more flow. This unit already carries the 5 um element; the standard grade is 40 um if finer filtration is not required. The manual drain must be opened by hand to empty collected condensate - choose automatic or differential-pressure drain versions if the installation is not visited regularly. No gauge is fitted on this code, so add a gauge if the set pressure must be read. Thread is NPT here; PT (standard) and G are the other catalogue options. A mounting bracket is included. Because flow is published as curves rather than a single rating, 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. Without the K option, air cannot flow back 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 we do not quote a rated flow, Cv or SCFM number. Send us your application's air consumption and line pressure and we will confirm the datasheet flow figures for this 300-size, 1/4 in NPT unit on request.
In the code GFR30008MNWT, M is the manual drain and N means no gauge is fitted. The bowl must be drained by hand, which suits installations that are checked regularly; automatic (A) and differential-pressure (default) drain versions are available for unattended sites. Since no gauge is supplied, add a gauge if operators need to read the set pressure, which is adjustable from 0.05-0.9 MPa (7-130 psi) on this manual-drain standard regulator.
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.