The AirTAC GFR300C15MJF1WT AirTAC Filter Regulator NPT1/2, 5 um 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 GFR300C15MJF1WT is a filter regulator: one body that removes water and particulate from compressed air and holds the downstream pressure at a set point. This size 300 unit is threaded NPT1/2 (1/2 in), carries the 5 um filter element (code W, against the 40 um standard), drains by hand through its manual drain on a polycarbonate (PC) bowl, and comes with the embedded square gauge scaled in MPa. The regulator is the standard type, no reverse/check valve is fitted, and no mounting bracket is included.
It is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of PT, G or NPT thread, manual, automatic or differential-pressure drains, 40 um or 5 um elements, and MPa, psi or bar gauge scales. 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 datasheet figures for your application.
| Model | GFR300C15MJF1WT AirTAC Filter Regulator NPT1/2, 5 um |
|---|---|
| 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) |
Point-of-use preparation for a bench pneumatic press or clamping fixture: the 5 um element strips water and fine particulate before they reach the cylinder valves, while the regulator holds a steady set point so clamp force stays repeatable through the shift.
Air preparation for the pick-and-place and carton-sealing cylinders on a packaging or bottling line. The manual drain suits a line that is blown down at shift start, and the square MPa gauge lets operators verify set pressure at a glance during changeover.
A filter regulator mounted at the drop point where a plant air ring main feeds a single machine cell, cleaning the shop air and dropping the header pressure to the level the machine's valves and actuators were specified for.
Size and port step up together: 200, 300, 400 and 600 carry progressively larger ports and flow capacity, and this unit sits at size 300 with a 1/2 in NPT thread (PT is the standard thread; G and NPT are ordered as options). Choose the drain to suit attendance: manual, as fitted here, where an operator drains the bowl periodically; automatic where the unit should drain itself; or differential-pressure as the default. Pick 40 um for general line protection or the 5 um element fitted here for finer pre-filtration; set the gauge scale to MPa, psi or bar; and add a bracket if the unit will be mounted rather than screwed directly into the circuit. Flow is published as curves, not a single rating, so send us your flow, inlet pressure and set point and we will confirm sizing against 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 G-series flow as curves against inlet pressure and set point rather than as a single rated figure, so we do not quote a number here. Tell us your required flow, inlet pressure and regulator set point, and we will confirm the figures from the datasheet before you order.
The M in the code sets the manual drain: an operator opens the drain to expel collected water, which suits attended compressors or lines that are blown down on a fixed routine. If the unit will be left unattended, the same family is available with an automatic or differential-pressure drain on other codes.
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.