The AirTAC GFR300C15LC2WTK AirTAC Filter Regulator NPT1/2 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 GFR300C15LC2WTK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit is built with 1/2 in NPT ports, a 5 um filter element (code W) instead of the 40 um standard, and a differential-pressure drain on its polycarbonate bowl. The regulator is the low-pressure type (code L), the code specifies a round pressure gauge reading in psi, a reverse (check) valve is fitted, and the mounting bracket is included.
This is a genuine AirTAC part, covered by the published G-series catalogue. The GFR line spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options for manual or automatic drains, 40 um standard or 5 um elements, square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the figures from the datasheet for your application.
| Model | GFR300C15LC2WTK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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 in a paint booth: the 5 um element keeps water and particulate out of the finish, while the low-pressure regulator holds a gentle, steady setting at the gun and the round psi gauge gives a direct readout.
Supplying workholding clamps on a machining centre: filtered, regulated air at a stable low setting keeps clamping repeatable, and the fitted reverse valve prevents backflow through the unit.
Low-pressure air to seal or tuck mechanisms on a carton line: the regulator keeps actuation gentle, the 5 um grade protects small pilot valves, and the 1/2 in NPT ports feed multi-station headers.
Within GFR, the size and port set the air capacity: this unit is size 300 with 1/2 in NPT ports, and the smaller and larger sizes step capacity up or down. Because the catalogue publishes flow as curves rather than a single rating, ask us to check the curve against your demand before ordering. The 5 um element (code W) suits work needing finer particulate removal than the 40 um standard, and the differential-pressure drain flushes the bowl as pressure differential builds, with manual (M) and automatic (A) drains available as alternatives. The L in the code marks the low-pressure regulator type; its exact adjustment range is not published in the standard table, so we confirm it from the datasheet on request. Gauge scale, thread (PT is the standard, with G and NPT as order options) and the bracket are the remaining choices to match the rest of the installation.
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, not as a single rated figure, so we do not quote a number here. Send us your line pressure, downstream demand and allowable pressure drop, and we will confirm the sizing from the datasheet before you order.
It marks the low-pressure regulator type, intended for circuits set well below the standard range. Its exact adjustment range is not published in the standard table, so we confirm it from the datasheet on request. The rest of the code decodes as: size 300, NPT1/2 ports, 5 um element, differential-pressure drain, round psi gauge, check valve fitted, bracket included.
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.