The AirTAC GFR300C15ALJC1WTK 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 AirTAC GFR300C15ALJC1WTK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit is threaded NPT1/2, carries the 5 um filter element (code W) and drains condensate automatically from its polycarbonate bowl, so no manual draining is needed. The regulator is the low-pressure type, a round gauge reading in MPa is fitted for setting and monitoring, and a reverse/check valve is built in. No mounting bracket is supplied with this code (J). Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR300 is one step in the GFR range, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um filtration, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow for the series is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR300C15ALJC1WTK 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) |
Regulates the air to fixture clamp cylinders that must not see full header pressure. The 5 um element protects the directional valve spools, and the automatic drain keeps condensate out of the clamp circuit.
Feeds the cylinders and grippers on a packaging conveyor with filtered, regulated air. The round MPa gauge lets the line technician set and verify the working pressure at the machine.
Prepares the air feeding spray guns on a coating line, removing water and particles before regulation. The low-pressure regulator suits booths running below standard line pressure, and the automatic drain copes with compressor condensate.
Match the size and port to the air demand of the circuit: this unit is size 300 with a 1/2 in NPT port, and larger sizes carry larger ports and more flow - we can check the published flow curve against your consumption before you order. The 5 um element (W) suits circuits with finer valves or instruments; the 40 um standard element is the usual choice for general cylinder circuits. The automatic drain ejects condensate on its own; manual and differential-pressure drains are the alternatives if you prefer a different regime. The fitted round gauge reads in MPa, with psi and bar scales available as options. The thread on this code is NPT; PT is the standard and G is also a catalogue option. No bracket is fitted here, so order one separately if you need panel or wall mounting.
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 series as curves rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow from the datasheet for this exact model, GFR300C15ALJC1WTK, before you order.
The L marks the low-pressure variant of the GFR300 regulator. Its exact adjustment range is not published in the standard table, so we confirm it from AirTAC documentation on request. The rest of the code decodes as: 5 um filtration (W), automatic drain (A), no bracket (J), round MPa gauge (C1), NPT thread (T) and a fitted reverse/check valve (K).
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.