The AirTAC GFR30010LC3WT AirTAC Filter Regulator 3/8 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 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 GFR30010LC3WT is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates the downstream pressure. This configuration is the 300 size with 3/8 in NPT ports, a 5 um filter element (the fine grade; 40 um is the standard option), a differential-pressure drain that discharges condensate automatically as the pressure differential rises, and the low-pressure regulator type. It carries an external round gauge reading in bar, and a mounting bracket is included. The polycarbonate bowl gives a clear view of condensate, and the unit handles a maximum inlet pressure of 1.0 MPa (145 psi) at -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The G-series filter-regulator line spans the 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, PT thread as standard and G or NPT threads as order options, plus manual or automatic drains, 40 um or 5 um elements, embedded square or external round gauges in MPa, psi or bar scales, and low-pressure variants. Because rated flow is published as curves rather than a single figure, we confirm the datasheet and flow figures for your application on request.
| Model | GFR30010LC3WT AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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 — round, bar 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 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) |
Fixture clamps that must close gently rather than at full line pressure get filtered air and a reduced, stable setting from this filter regulator, with the 5 um element protecting the clamp valve's spool from particulate and water.
Positioners and pilot stages on control valves need clean, low regulated air. This unit filters the supply to 5 um, holds the reduced pilot pressure, and its round bar gauge gives the instrument tech a direct local reading.
Diverters, pushers and hold-down cylinders along a packaging conveyor run best on air that is dry, clean and regulated. The differential-pressure drain keeps condensate out of the circuit without daily manual blowing-down.
Step through the real choices before ordering. Size and port rise together - 200, 300, 400 and 600 - and this 300 unit takes 3/8 in NPT (PT is the standard thread; G and NPT are catalogue options to order). The 5 um element here suits air feeding sensitive valves, cylinders and instruments; pick 40 um where only general circuit protection is needed. Drain is differential-pressure on this unit, which auto-dumps condensate as the differential builds; manual and automatic drains are the alternatives. Gauges come as an embedded square type or an external round type, in MPa, psi or bar - this one is round, bar. As a low-pressure type, its adjustment range differs from the standard unit, so ask us to confirm the exact range. Finally, flow is published as curves, not a single rating, so send us your flow and pressure requirements and we will confirm sizing against the datasheet before you order.
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 GFR300 series as curves rather than a single rated figure, so we do not quote one number. Tell us your required flow and upstream pressure and we will confirm the sizing from the datasheet on request before you order.
It means the regulator inside this GFR300 is the low-pressure variant, intended for circuits regulated below the standard unit's range. The exact adjustment range for the low-pressure type is not published on our sheet, so we confirm it from the datasheet on request. Everything else decodes normally: 3/8 in NPT ports, 5 um element, differential-pressure drain and a round bar gauge.
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.