The AirTAC GFR300-15LF2TK AirTAC Filter Regulator NPT1/2 Low-Pressure 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 GFR300-15LF2TK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body. This 300-size unit is built with a 1/2 in NPT port, the low-pressure regulator type, a 40 um standard filter element, and a differential-pressure drain that bleeds accumulated condensate automatically whenever the pressure differential across the element is high enough. The embedded square gauge is fitted and reads in psi, and a reverse/check valve is fitted to hold downstream pressure if the supply is interrupted.
This is a genuine AirTAC part, available across the G-series size range (200/300/400/600) with a choice of ports, threads (PT standard; G and NPT as order options), drain types, filter grades (40 um standard, 5 um optional), gauge scales, and bracket options. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR300-15LF2TK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| 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 | Low-pressure 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, psi 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 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) |
Point-of-use conditioning on a factory air drop feeding assembly stations: the 40 um element strips water and pipe scale, the regulator sets a stable working pressure for the cell, and the psi gauge lets operators verify the setting at a glance.
Conditioning the supply to pneumatic conveyor drives and diverters on a packaging or material-handling line, where the check valve holds the downstream circuit if the main supply drops and the differential-pressure drain keeps condensate off the drive cylinders.
Feeding a pneumatic control panel or actuator bank that runs at reduced pressure: the low-pressure regulator type gives finer control in the lower band, and the 1/2 in NPT port matches the panel supply header without reducers.
Choose the 300 size with its 1/2 in NPT port when your line flow and pipework sit between the smaller 200 and larger 400 frames; match the port step to the pipe diameter and the flow demand of the circuit. This unit carries the low-pressure regulator type, so it suits circuits that work in the lower part of the pressure band - ask us to confirm the exact adjustment range against your setpoint. The 40 um element is the standard grade and suits general plant air; if you need finer protection for valves or instruments, the 5 um (W) grade is available in the same frame. The fitted square gauge reads in psi; MPa and bar scales are alternative order options. NPT is the thread on this code; PT (standard) and G are the other catalogue options. A mounting bracket is included. Because flow is published as curves rather than a single rating, send us your application details and we will confirm sizing 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 we do not quote a number that is not on the datasheet. Tell us your line pressure and the flow your circuit needs, and we will confirm the curves and correct sizing from the datasheet on request before you order.
The blank drain position on this code means the differential-pressure drain: condensate in the bowl is discharged automatically when the pressure drop across the 40 um element rises, with no operator action. If you prefer a fully automatic float drain (code A) or a manual drain (code M), both are catalogue options in the same 300 frame - just order the corresponding code.
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.