The AirTAC GFR300C15LNWT AirTAC Filter Regulator 1/2 in NPT 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 GFR300C15LNWT is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built around a 1/2 in NPT port, a 5 um filter element (the W grade, finer than the 40 um standard), a low-pressure regulator type, and the family's default differential-pressure drain. The metal bowl collects the condensate, a mounting bracket is included, and no gauge is fitted. 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 is offered in sizes 200, 300, 400 and 600, and this unit uses the NPT thread option - PT is the standard thread, with G (BSPP) also available to order. Gauge variants and a reverse/check valve can be specified on configurations that need them; this one is supplied without either. Because AirTAC publishes flow for this family as curves rather than a single rated figure, we confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C15LNWT AirTAC Filter Regulator 1/2 in NPT |
|---|---|
| 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) |
Filtered, low-pressure regulated air for swing clamps and pallet-lock cylinders on a CNC fixture. The 5 um element protects the clamp valves from particulate, and the differential-pressure drain keeps condensate out of the circuit without an operator draining the bowl each shift.
Atomizing air for a bench or laboratory spray-coating station where the gun needs a low regulated set-point rather than full line pressure. The filter stage removes water and particles that would cause finish defects; specify a gauge variant if the set-point has to be watched.
Regulated air for stopper cylinders, diverters and pushers along a bottling or packaging conveyor. The filter and regulator in one body saves panel space between the air header and the valve manifold, and the metal bowl collects the condensate that settles along the line.
Choose the size step (200/300/400/600) to match the port and flow capacity your circuit needs; this unit is size 300 with a 1/2 in NPT port. Across the family the drain is differential-pressure (as fitted here), automatic (code A) or manual (code M), and the filter grade is 40 um standard or 5 um with the W code, as on this unit. The L code marks the low-pressure regulator type - the exact adjustment range for that type is not published in the standard table, so ask us to confirm it against your set-point. Thread is PT as standard with G (BSPP) and NPT as order options, and a bracket is included (code J deletes it). Gauges - embedded square or external round, with MPa, psi or bar scales - can be specified where needed; this configuration carries none.
Flow for the GFR family is published as curves, not a single rating, so send us your flow and pressure requirements and we will confirm sizing from 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 GFR family as performance curves rather than a single rated number, so there is no one l/min or SCFM figure we can quote for this model. Send us your required flow and the upstream and downstream pressures, and we will confirm the sizing from the datasheet on request.
The differential-pressure drain is the default drain on the GFR family: it discharges collected condensate in response to the pressure drop across the filter element, with no operator action. If your maintenance routine prefers it, the same unit can be ordered with an automatic drain (code A) or a manual drain (code M) instead.
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.