The AirTAC GFR30010MNWTK AirTAC Filter Regulator 3/8 NPT, 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 PT3/8" 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 GFR300-10 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body, so one 3/8 in component does the job of a filter and a regulator in series. This configuration is the 300 size with a 3/8 in NPT thread, a manual drain bowl in polycarbonate, and the fine 5 um filter element (code W) for applications that need cleaner air than the standard 40 um grade. It is supplied without a gauge (code N), includes a reverse/check valve (code K) to hold downstream pressure if the supply drops, and comes with a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjustment range with manual drain is 0.05-0.9 MPa (7-130 psi), and the working 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 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 with MPa, psi or bar scales, and PT, G (BSPP) or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR30010MNWTK AirTAC Filter Regulator 3/8 NPT, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (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 | 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Cleaning and regulating the air feeding tool-change cylinders and clamping fixtures on a machining centre, where the 5 um element helps protect close-tolerance valves from fine particulate and the manual drain suits a machine serviced on a fixed schedule.
Filtering and regulating the air that drives grippers, pushers and capping heads on a beverage bottling line, with the check valve holding the set pressure against supply dips when upstream equipment cycles.
A compact filter-regulator at the point of use on an assembly cell, conditioning air for pick-and-place cylinders and air-driven screwdrivers without the footprint of a separate filter and regulator pair.
Start with the port step: this unit is the 300 size with a 3/8 in NPT thread; smaller 200 units (1/8 and 1/4 in) and larger 400 units (1/2 in) exist, so match the size to the air demand of the circuit rather than upsizing by habit. Choose the drain next: manual drain (this model) means an operator opens the bowl drain periodically, while automatic and differential-pressure drains discharge condensate without intervention - pick manual only where the unit is accessible on a maintenance round. This model carries the 5 um element (code W); the standard grade is 40 um, so specify W where downstream valves, cylinders or instruments need finer filtration. Gauge options (embedded square or external round, in MPa, psi or bar scales) were not selected here but can be ordered; the reverse/check valve (K) is fitted. Thread is NPT on this unit; PT is the catalogue standard and G (BSPP) is also an order option. A mounting bracket is included.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated number, so we cannot quote you a rated flow figure here. Send us your application details and we will confirm the datasheet and check the sizing against your required flow 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 family as performance curves, not as a single rated figure, so we do not quote a rated flow number here. Tell us your application and required flow, and we will confirm the datasheet figures and check that the 300 size at 3/8 in is correctly sized before you order.
The M in the code GFR30010MNWTK specifies a manual drain: condensate collected in the polycarbonate bowl is released by opening the drain when serviced. If the unit will be mounted where regular access is difficult, the automatic (A) or differential-pressure (blank) drain versions discharge condensate without operator action and are the better choice.
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.