The AirTAC GFR300-15JF3TK AirTAC Filter Regulator NPT1/2, 40 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 PT1/2" 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 GFR300-15JF3TK is a size-300 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is fitted with a 1/2 in NPT port, the standard 40 um filter element, a differential-pressure drain that bleeds condensate automatically as flow passes through, and an embedded square gauge reading in bar. The built-in reverse/check valve holds the downstream setting if upstream pressure is lost, and the unit is supplied without a mounting bracket.
This is a genuine AirTAC part from the GFR300 series, one of four sizes (200/300/400/600) covering ports from 1/8 to 1 in, with manual or automatic drain, a 5 um element, alternative gauge scales and G or NPT threads available as ordering options. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR300-15JF3TK AirTAC Filter Regulator NPT1/2, 40 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT 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 — square, bar scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
|---|---|
| 15 | Port size PT1/2". 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Installed at the point where the main header drops down to an assembly cell, the GFR300-15JF3TK strips water and pipe-scale from the shop air and holds a steady regulated supply to the cell's actuators and air tools.
Mounted on the supply line feeding pneumatic gate and diverter cylinders on a packaging conveyor, this unit keeps carryover moisture out of the valve stack and maintains a consistent setting so gates stroke predictably through each shift.
Used as the panel-mounted supply unit for a machine's pneumatic manifold, the filter regulator with its bar-scale square gauge gives operators a visible setting at the panel, while the check valve holds the downstream pressure if the upstream feed is interrupted.
Size and port set the flow capacity: the 300 size with its 1/2 in NPT port suits lines above the 1/4-3/8 range; step up to 400 or 600 for larger demand. Drain choice matters: differential-pressure (this unit) needs no attention during flow, automatic drains regardless of flow, and manual requires periodic bleeding - pick per how often the line runs. The 40 um element is the standard grade; specify code W for 5 um where finer particulate removal is needed. The square gauge here reads in bar; MPa and psi scales are alternatives, and an external round gauge is optional. PT is the standard thread, with G (BSPP) and NPT as orderable options, and a bracket can be added if this J-coded, bracket-less version does not suit your mounting.
Flow for this series is published as curves, not a single rating, so send us your application details 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated figure, so there is no one number we can honestly quote. Send us your line pressure, downstream demand and application details and we will confirm the correct size against the datasheet before you order.
K means a reverse/check valve is fitted, so the regulated downstream pressure is held if the upstream supply is lost. This unit has no drain letter, which is the differential-pressure drain: condensate collected in the PC bowl is bled off automatically as air flows through, with no periodic manual draining needed during normal operation.
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.