The AirTAC GFR300C15ALNWT AirTAC Filter Regulator NPT 1/2 in 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 GFR300C15ALNWT is a filter regulator: one body that removes water and particulate from compressed air and then regulates the downstream pressure. This unit is built on the 300 size with a 1/2 in NPT port, carries the finer 5 um filter element (code W) instead of the standard 40 um, and drains collected condensate automatically, so it suits installations where nobody opens a drain by hand. The regulator is the low-pressure type; its exact adjustment range is not published, so confirm it against your setpoint before ordering. No pressure gauge is fitted (code N), the bowl on this size is polycarbonate (PC), and a mounting bracket is included. 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 in the GFR series, which spans the 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in and thread options in PT (the standard), G (BSPP) and NPT. Drain type, filter grade, gauge and bracket can all be specified per code. Flow for the GFR series is published as curves rather than a single rating, so ask us to confirm sizing and the full datasheet for your application before you order.
| Model | GFR300C15ALNWT AirTAC Filter Regulator NPT 1/2 in |
|---|---|
| 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) |
Filtering shop air to 5 um and stepping it down to a low setpoint for spray-booth atomiser and finishing-tool drops, where clean, steady low-pressure air protects the finish.
Conditioning the compressed-air feed to a lab test rig: the 5 um element keeps particulates and water out of sensitive instruments while the regulator holds the bench pressure.
Supplying filtered, regulated air to the pneumatic cylinders that start, stop and divert bottles on a filling line, with automatic drain handling condensate through long shifts.
Pick the GFR size and port against the air demand of the line: this 300-size unit takes a 1/2 in NPT port, and the larger sizes carry larger ports and more flow. Decide the drain early - this code has the automatic drain (A), the right choice for unattended installations; manual and differential-pressure drains are the other catalogue options. The 5 um element (W) is the finer grade over the standard 40 um - choose it where downstream valves, cylinders or instruments need cleaner air. If your setpoint sits below the standard regulator range, the low-pressure type (L) fitted here is the catalogue choice; confirm its exact range with us. Gauge, thread (PT standard; G and NPT to order) and bracket complete the decodable choices. Flow is published as curves, not a single rating, so send us your flow and pressure requirements and we will confirm the right size 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 GFR-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your required flow and working pressure and we will confirm the sizing from the datasheet on request before you order.
The gauge position in the code is N, so no gauge is fitted. Gauges are catalogue options on GFR units - an embedded square gauge or an external round gauge, with MPa, psi or bar scales - so choose a variant with a gauge code if you want one supplied.
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.