The AirTAC GFR300C10LF1WT AirTAC Filter Regulator NPT3/8 5 um 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 GFR300C10LF1WT is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds a set downstream pressure, in one body. This configuration is the 300 size with a 3/8 in NPT thread, a 5 um filter element (the finer of the two published grades), a differential-pressure drain on the bowl, and the low-pressure regulator type. A square pressure gauge scaled in MPa is fitted and a mounting bracket is included. The polycarbonate bowl suits the 300 frame; 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 runs from size 200 to 600 with port sizes from 1/8 in to 1 in, filter grades of 40 um standard or 5 um (W), differential-pressure, automatic or manual drains, standard or low-pressure regulation, an embedded square gauge or an optional external round gauge scaled in MPa, psi or bar, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application before ordering.
| Model | GFR300C10LF1WT AirTAC Filter Regulator NPT3/8 5 um |
|---|---|
| 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) |
Feeding spray guns or coating heads that need clean air held at a low, stable setting: the 5 um element protects the nozzle from water and particulate while the low-pressure regulator trims supply down from a shop-air header, with the square MPa gauge giving the operator a direct reading.
Air cylinders on jigs and fixtures that clamp gently at low pressure: this unit filters the incoming shop air to 5 um and lets the setter dial in and read a low holding pressure on the fitted gauge, with the included bracket mounting the unit at the machine.
Instrument-air panels and lab test benches where air must be clean and held at a low test pressure: the differential-pressure drain clears collected water from the bowl during operation, and the compact 300 frame with 3/8 in NPT ports suits bench-mounted distribution.
Choose the size step (200/300/400/600) against the flow your line needs - the 300 with 3/8 in ports sits mid-range - then pick the thread: PT is the standard, with G (BSPP) and NPT as orderable options, as on this NPT unit. Where a bowl is fitted, select the drain: differential-pressure (the default, as here), automatic, or manual; on standard-type units the regulator adjust range differs by drain type. Pick the element grade - 40 um standard or 5 um (W) for finer protection - and the gauge: an embedded square gauge is standard, an external round gauge is optional, with MPa, psi or bar scales. Flow is published as curves, not a single rating, so send us your application 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 as curves, not as a single rated figure, so we will not quote a number here. Send us your line pressure, downstream setting and expected air demand, and we will confirm the flow curve and the datasheet figures for this exact configuration on request.
It marks the low-pressure regulator variant: the unit is built for regulating at lower downstream pressures than the standard type. The exact adjust range for the low-pressure variant is not published in our data - standard GFR units with differential-pressure or automatic drain adjust 0.15-0.9 MPa (20-130 psi) - so confirm the range you need with us before ordering.
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.