The AirTAC GFR30010LF1WT AirTAC Filter Regulator, NPT 3/8 in 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 differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR30010LF1WT is a 300-size filter regulator: water and particulate filtration plus downstream pressure regulation combined in one body. This configuration carries a 3/8 in NPT port, the 5 um filter element (code W) for finer particle capture than the standard 40 um grade, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and the low-pressure regulator type for circuits set below standard regulator ranges. An embedded square gauge scaled in MPa is fitted, and a mounting bracket is included. The polycarbonate bowl suits this size, with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -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 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filter grades, standard or low-pressure regulation, square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application.
| Model | GFR30010LF1WT AirTAC Filter Regulator, NPT 3/8 in |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, MPa scale |
| 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. 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
A low-pressure clamp circuit on a CNC fixture needs clean, regulated air at a modest setting. The 5 um element protects clamp cylinders from fine particles while the regulator holds the clamp pressure steady, and the square MPa gauge lets the setter read the setting directly.
A packaging line's valve manifold benefits from one body doing two jobs: the filter section removes water and particulate before the directional valves, the regulator section sets the actuation pressure, and the differential-pressure drain keeps condensate moving out during production runs.
A bench-top test rig fed from a shop-air drop needs finer filtration than the standard grade and a stable, lower-than-standard regulated supply. The 5 um element and low-pressure regulator type suit the rig, with the included bracket mounting the unit at the panel edge.
Start with the port step: this unit is 300 size with a 3/8 in NPT port, one step up from 1/4 in; match it to the line size and the flow your circuit needs. The 5 um element (code W) is the right choice where finer particulate protection matters; the standard grade is 40 um if coarse protection is enough. The differential-pressure drain needs no operator action but relies on flow to purge condensate; an automatic drain (code A) or a manual drain (code M) can be ordered instead. The fitted square gauge reads in MPa; psi or bar scales and an external round gauge are order options. PT is the standard thread; G and NPT are catalogue options ordered by suffix, as this NPT unit shows. A bracket is included, and a no-bracket version (code J) exists.
Because flow is published as curves, not a single rated figure, send us your application details and we will confirm sizing against the datasheet before you order. The exact adjustment range of this low-pressure type is likewise confirmed on request.
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, not as a single rated number, so we do not quote a l/min or SCFM figure here. Tell us your inlet pressure, set pressure and expected consumption, and we will confirm the flow from the datasheet curves for this 300-size, 3/8 in unit before you order.
The L code marks the low-pressure regulator type, intended for circuits set below standard regulator ranges; its exact adjustment range is not published on our sheet, so we confirm it on request. The 5 um grade (code W) filters to a finer particle size than the 40 um standard element, which is useful downstream of sensitive valves and cylinders. Both choices are factory build options on the same 300-size body.
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.