The AirTAC GFR30015LF1T 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 GFR30015LF1T is a GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single 300-size body with 1/2 in NPT ports. This configuration is the low-pressure type, suited to circuits that hold reduced set points, and carries the standard 40 um filter element with a differential-pressure drain that bleeds collected condensate automatically as the pressure differential across the element builds. An embedded square gauge with an MPa scale is fitted so the downstream setting can be read directly, and the polycarbonate bowl with an included mounting bracket makes installation on a machine wall or prep plate straightforward.
This is a genuine AirTAC part from the G-series air-treatment line, which covers sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and PT, G and NPT thread options. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating 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 and sizing figures for your application on request.
| Model | GFR30015LF1T 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, MPa 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. 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. |
| 1 | Gauge scale: MPa. 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. |
| (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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
A fixture-actuation circuit on a CNC machining cell that holds a reduced, stable clamp pressure benefits from the low-pressure regulator type, with the 40 um element keeping machining-air moisture and scale out of the clamp cylinders.
On a packaging line where conveyor diverters and case-sealing cylinders run at modest set points, this filter regulator cleans the supply, holds the reduced pressure and drains condensate via the differential-pressure bowl.
A valve-actuation skid in a process plant using 1/2 in air lines can mount this unit on its prep plate - the included bracket, MPa square gauge and low-pressure regulation suit positioner and actuator supply circuits.
Start with the port step: this unit is size 300 with 1/2 in NPT ports; if your line needs more or less flow capacity, the GFR family steps through sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in. The low-pressure (L) type is the right choice where the working set point sits well below full line pressure - the exact regulation range for this variant is not published, so confirm it with us against your set point before ordering. Drain choice is decodable: differential-pressure (this model, blank code), automatic (A) or manual (M). Filter grade is 40 um standard here; specify code W for the 5 um element if downstream valves or cylinders need finer protection. The fitted square gauge reads in MPa; psi or bar scales and an external round gauge are order options. Thread is NPT on this unit; PT is the standard and G is also a catalogue option. A mounting bracket is included.
One honest note on sizing: AirTAC publishes flow for this family as curves, not a single rated figure, so we cannot quote a rated flow number. Send us your application details and we will confirm the datasheet and sizing 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 GFR family as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application and line conditions and we will confirm the datasheet and sizing with you on request before you order.
This model has the differential-pressure drain (the blank code default): condensate collected in the polycarbonate bowl is discharged automatically when the pressure differential across the 40 um element builds, with no operator intervention. If you prefer an automatic (code A) or manual (code M) drain, those are decodable options in the same GFR300 series.
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.