The AirTAC GFR300C15MLJC1TK 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 GFR300C15MLJC1TK is a GFR-series filter regulator: one body that removes water and particulate from compressed air and then regulates the downstream pressure. This size 300 unit is built with 1/2 in NPT ports, a polycarbonate bowl with a manual drain, and the standard 40 um filter element. It carries the low-pressure regulator type, a round pressure gauge on an MPa scale, and a reverse-flow check valve (code K), and it is supplied without a mounting bracket. 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 spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options include automatic, manual or differential-pressure drains, a 5 um element (code W), square or round gauges on MPa, psi or bar scales, G or NPT thread variants, and bracket choices. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300C15MLJC1TK 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) |
Filtering and regulating the air feeding clamp cylinders on a machining fixture, where the low-pressure type lets the setter dial in a gentle holding force without crushing the workpiece.
Point-of-use preparation for the actuator and cylinder circuits on a packaging line, with the manual drain emptied during scheduled changeovers and the check valve holding the set circuit while upstream air is interrupted.
Reducing header pressure to the low setting a spray or coating station needs, with the 40 um element catching pipe scale and water before air reaches the gun.
Every meaningful choice in this code is decodable. Size 300 with 1/2 in NPT ports suits circuits plumbed at that port size; step up to size 400 or 600 where larger piping and heavier air demand call for it, and check the flow curve against your consumption first. Drain type matters in practice: this unit has a manual drain, which an operator opens at intervals - choose automatic (code A) where the bowl is hard to reach, or the default differential-pressure drain (blank) elsewhere. The 40 um element is standard; specify 5 um (code W) for finer particulate. Gauge scale (MPa, psi or bar), the G or NPT thread variant and the bracket option are all orderable. Because AirTAC publishes flow as curves, not a single rating, send us your application details 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 GFR300 series as curves rather than a single rated figure, so we do not quote one number here. Send us your inlet pressure and air consumption and we will confirm the flow from the datasheet on request.
The M in the code specifies a manual drain: the bowl is emptied by hand at intervals, which suits units mounted where an operator passes regularly. If access is difficult, order the automatic-drain (A) or default differential-pressure version instead. This exact configuration also carries the 40 um element, a round MPa gauge, a reverse-flow check valve (K), the low-pressure regulator type and no bracket - each of these is a decodable order option.
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.