The AirTAC GFR300C10LF3WT 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 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 GFR300C10LF3WT is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate down to 5 um through the fine-grade element, then regulates downstream pressure, with a differential-pressure drain in the metal bowl handling collected condensate. This configuration is a low-pressure type with an embedded square gauge scaled in bar, an NPT3/8 (3/8 in) port, and a mounting bracket included.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with a choice of port, thread (PT standard; G and NPT as order options), drain type, filter grade and gauge scale. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C10LF3WT AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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) |
On a machining cell where workpieces are held by air clamps running at reduced pressure, this low-pressure filter regulator cleans the supply to 5 um and holds the clamp circuit at the set pressure, with the bar-scale square gauge giving the operator a direct reading.
Feeding the valve manifold of a carton-forming or wrapping line, the unit strips water and fine particulate before it reaches the valves, the differential-pressure drain clears condensate without a manual blow-down stop, and the 3/8 in NPT port suits the machine's supply drop.
On a skid where positioners and transducers need clean, regulated air, the 5 um element protects the small orifices, the metal bowl stands up to the duty, and the included bracket lets the unit be panel-mounted next to the instrumentation it serves.
Step up or down through the GFR sizes (200/300/400/600) against the flow your line needs - this size 300 unit carries a 3/8 in NPT port. The 5 um element (code W) suits circuits that need finer filtration than the 40 um standard; the differential-pressure drain bleeds the bowl automatically as pressure differential builds. The embedded square gauge reads in bar, and the low-pressure type designation matters if your circuit runs at reduced pressure - the exact adjustment range for this variant is not published, so confirm it with us. Thread here is NPT; PT is the standard and G is also an order option, and a bracket is included.
Because catalogue flow is published as curves and not a single rating, ask us to confirm sizing against your application before ordering.
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 this family as curves, not as a single rated number, so we do not quote a figure here. Tell us your application and we will confirm the datasheet and the flow-curve reading for this 3/8 in NPT, size 300 unit on request before you order.
The W in the code specifies the 5 um fine filtration grade instead of the 40 um standard, which suits circuits with sensitive downstream components. The L code marks this as a low-pressure regulator type; its exact adjustment range is not published in the catalogue, so we confirm it with you on request. The square gauge on this unit is scaled in bar.
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.