The AirTAC GFR30010MLNTK AirTAC Filter Regulator NPT3/8 Low-Pressure is a genuine G-series filter regulator: water separation, 40 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 GFR30010MLNTK is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a 3/8 in NPT port, a manual drain bowl in polycarbonate, a 40 um standard filter element, a low-pressure regulator type, and a built-in reverse/check valve. No gauge is fitted (code N), and the mounting bracket is included. As a low-pressure type it is intended for circuits that run below standard working pressures; the exact adjustment range for this variant is not published in the general catalogue data, so confirm it against your set pressure before ordering.
This is a genuine AirTAC part from the GFR300 series. The G-series filter regulators span sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, manual, automatic or differential-pressure drains, a 5 um element option (code W), gauge choices, and G (BSPP), NPT or PT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application on request.
| Model | GFR30010MLNTK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 40 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. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
On a fixture-clamping manifold that must hold workpieces at reduced pressure, this low-pressure filter regulator cleans the supply and holds the set pressure, with the check valve helping the circuit hold its state between cycles.
Feeding the sealing cylinders of a food tray sealer, the unit strips water and 40 um particulate from shop air and drops it to the gentler pressure the seal actuation needs, with the manual drain bled during shift checks.
Mounted on the bracket ahead of a gripper module's valve block, it filters the plant air and regulates it to the pressure the suction and gripper actuators were set up for, protecting the valves from condensate and debris.
Size 300 with a 3/8 in NPT port suits lines whose piping and air consumption sit in that band; step up to size 400 or 600 for larger flows, down to 200 for compact circuits. The manual drain (code M) means someone bleeds the bowl on a routine walk-round - choose automatic or differential-pressure draining instead if the unit sits where regular access is impractical. The 40 um element is the standard grade; specify the 5 um W option only where downstream equipment truly needs finer filtration. This unit is the low-pressure type and has no gauge fitted; if you need to read the set pressure, order a gauge variant or add one at the port. The T in the code gives NPT threads; G (BSPP) and PT are the other order options, and the bracket is included.
Because published flow data is presented as curves rather than one rated number, we cannot quote a single flow figure here. Send us your application's flow and pressure requirements and we will confirm sizing from the datasheet 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 this series as characteristic curves, not as a single rated figure, so we do not quote one number here. Tell us your required flow and operating pressure and we will confirm the sizing from the datasheet on request before you order.
The N in the code means no gauge is fitted, so you cannot read the downstream pressure on the unit itself; order a gauge variant or add one separately if you need to verify the set point. The L makes it the low-pressure regulator type, intended for circuits below standard working pressure; its exact adjustment range is not published in the general data, so confirm it with us against your set pressure. The manual drain bowl must be bled by hand as part of routine maintenance.
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.