The AirTAC GFR300C15MLJF2WT AirTAC Filter Regulator NPT1/2 5um 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 GFR300C15MLJF2WT is an AirTAC GFR300 filter regulator: one body that strips water and particulate from compressed air and regulates downstream pressure. This configuration carries a 1/2 in NPT port, a 5 um filtration element (the finer of the two published grades), a metal bowl with manual drain, an embedded square gauge reading in psi, and no reverse/check valve or mounting bracket. It is the low-pressure regulator type; its adjustment range is not published, and we confirm it on request. 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 made in four sizes - 200, 300, 400 and 600 - with ports from 1/8 to 1 in, and options that include manual, automatic or differential-pressure drains, 40 um or 5 um elements, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so send us your requirements and we will confirm the datasheet figures before you order.
| Model | GFR300C15MLJF2WT AirTAC Filter Regulator NPT1/2 5um |
|---|---|
| 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, regulated air to a bench pneumatic press on a small assembly line, where the 5 um element protects the valve stack and the square psi gauge gives the operator a visible setpoint.
A dedicated air drop feeding the seal cylinders and diverters on a carton packaging line, with the manual drain tended at shift start and local pressure control at the machine.
Point-of-use regulation for gripper and clamp circuits on a robotic handling cell, keeping supply pressure stable downstream of the plant air ring main.
Size and port are the first decision: this unit is size 300 with a 1/2 in NPT port, and the G-series steps through 200, 300, 400 and 600 as port size and flow capacity grow. Because AirTAC publishes flow as curves rather than a single rated figure, send us your flow and pressure requirements and we will confirm sizing against the datasheet before you order.
The other real choices on this family: drain type (this unit is manual; automatic and differential-pressure versions exist), filter grade (40 um standard or 5 um, fitted here), gauge scale (MPa, psi or bar; this unit carries the embedded square gauge in psi, with an external round gauge available), thread (PT is the standard; G and NPT are order options - NPT here), and regulator type (this code is the low-pressure type, whose adjustment range is not published - we confirm it on request).
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 GFR300 flow as curves rather than a single rated figure, so there is no one number we can honestly quote. Tell us your required flow and inlet pressure and we will read the datasheet curve and confirm sizing for your application before you order.
Manual drain means an operator opens the bowl drain at set intervals instead of relying on an automatic or differential-pressure drain, both of which are available on this family. The 5 um element (code W) is the finer published grade versus the 40 um standard, for cleaner air downstream. Ask us if you want the alternative configurations quoted.
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.