The AirTAC GFR300C10ALF2WT AirTAC Filter Regulator NPT3/8 5um 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 See datasheet 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 GFR300C10ALF2WT is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure in a single body. This configuration is built with a 3/8 in NPT port, a 5 um filter element for finer filtration than the standard 40 um grade, an automatic drain that ejects collected condensate without manual intervention, and the low-pressure regulator type for circuits set below standard ranges. It is supplied with a square gauge reading in psi and a mounting bracket, and the bowl is metal.
This is a genuine AirTAC part. The GFR series covers sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and options for drain type, 40 um or 5 um filtration, gauge style and scale, G/NPT threads and bracket choice. Flow figures for the series are published as curves rather than a single rating, so ask us to confirm sizing and datasheet details for your application before ordering.
| Model | GFR300C10ALF2WT AirTAC Filter Regulator NPT3/8 5um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 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. |
|---|---|
| C1 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (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. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Clean, regulated low-pressure air actuates the clamping cylinders that hold workpieces through milling and drilling cycles, with the 5 um element protecting seals and small orifices from fine particulate.
Filtered, regulated air feeds pneumatic positioners and valve pilots on a process line, where the low-pressure type holds a reduced set point and the automatic drain keeps condensate out of the pilot circuit.
A single filter regulator conditions the supply to carton-sealing and wrapping cylinders on a packaging line, with the square psi gauge giving operators a visible set point at the machine.
Choose the size step (200/300/400/600) and port to match the flow your line needs - here a 3/8 in NPT connection in size 300. Pick the drain: automatic (this unit) for unattended condensate removal, manual where you want operator control, or differential-pressure as the default. Filter grade is 5 um on this model versus the standard 40 um; the gauge is the square type reading in psi, with round gauges and MPa/bar scales available as options. Thread is NPT here; PT is the standard and G is also an order option. Because flow is published as curves rather than a single rated figure, send us your flow and pressure requirements and we will confirm this model 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 G-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your flow and pressure requirements and we will confirm this 3/8 in NPT filter regulator against the datasheet before you order.
The L code marks the low-pressure regulator variant, intended for circuits set below standard regulator ranges. The exact set range for this configuration is not published in our listing, so ask us to confirm it on the datasheet for your application. Maximum inlet pressure remains 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
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.