The AirTAC GFR30010MLNWTK AirTAC Filter Regulator NPT3/8 Low-Pressure 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 GFR30010MLNWTK is a GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is built on the 300 size with a 3/8 in NPT port, a 5 um filter element (the finer of the two catalogue grades), a manual-drain bowl in polycarbonate, and the low-pressure regulator type. A reverse/check valve is fitted, no gauge is supplied, and the mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans 200, 300, 400 and 600 sizes with port choices from 1/8 in to 1 in, manual, automatic or differential-pressure drains, a 40 um standard or 5 um element, gauge and thread options, and standard or low-pressure regulation. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR30010MLNWTK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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 | 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 | 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. 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. |
|---|---|
| 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)). |
| L | Low-pressure 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) |
Spray lines run at reduced pressure below the main header. The low-pressure regulator type is aimed at circuits held well under full line pressure, and the 5 um element keeps water and particulate out of the air reaching the gun.
On a 3/8 in NPT drop feeding packaging machinery, one GFR300 body does both jobs - filtering the air and regulating the circuit - with the reverse/check valve fitted as part of the configuration and the manual drain suited to attended, routine-maintenance installations.
Bench rigs and pneumatic instrument panels benefit from the finer 5 um element, and the low-pressure regulation type fits circuits that operate well below full header pressure, with the included bracket making panel mounting straightforward.
The real, decodable choices on the GFR line are: size (200/300/400/600) and port (1/8 in to 1 in) stepped against the flow your line needs; drain type - manual as fitted here, or automatic or differential-pressure; filter grade, 40 um standard or 5 um (code W) as on this unit; regulator type, standard or low-pressure (this unit is low-pressure); gauge with an MPa, psi or bar scale (none fitted here); thread, PT as standard with G and NPT as order options (this unit is NPT); and the bracket, which is included. Maximum inlet pressure is 1.0 MPa (145 psi) and temperature range is -5 to 70 C, non-freezing. The exact regulation range of the low-pressure type is not published, and flow is given as curves rather than a single rating - ask us to confirm both 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.
Flow for the GFR300 series is published as curves, not as a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the datasheet flow figures and check that the 300 size and 3/8 in port suit your requirement before you order.
This unit has a manual drain: the bowl is drained by hand as part of routine attention, rather than discharging automatically. If the installation is unattended or the drain point is hard to reach, the GFR300 is also available with an automatic drain (code A) or a differential-pressure drain (the default). The bowl on this 300 size is polycarbonate; only the 600 size uses an aluminium alloy bowl.
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.