The AirTAC GFR300-15 AirTAC Filter Regulator PT1/2, 40 um, psi Gauge 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 GFR300-15 is a 300-size filter regulator that removes water and particulate from compressed air and sets downstream pressure in a single body. This configuration has PT1/2 ports (PT thread standard, with G and NPT available as order options), a 40 um standard filter element, a differential-pressure drain that bleeds collected condensate automatically as pressure drops, and an embedded square gauge scaled in psi. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi), and the unit operates from -5 to 70 C in non-freezing conditions. The polycarbonate bowl keeps the condensate level visible at a glance.
This is a genuine AirTAC part. The GFR line spans sizes 200, 300, 400 and 600, with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, a 5 um (code W) element where finer filtration is needed, round external gauges as an option, and scales in MPa, psi or bar. Flow for this size is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300-15 AirTAC Filter Regulator PT1/2, 40 um, psi Gauge |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (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 — square, psi 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. |
|---|---|
| 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. |
| 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. |
| (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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Point-of-use conditioning ahead of a carton-sealing or wrapping machine: the GFR300-15 filters water and scale from the shop-air drop and holds a steady regulated pressure to the packaging machine's air cylinders, with the psi gauge giving operators a visible setpoint.
Mounted at the feed of a conveyor system's air-operated gates and diverters, the unit cleans the supply and keeps actuator pressure consistent so gate timing stays repeatable through the shift; the differential-pressure drain handles condensate without daily manual blowing down.
Feeding clamp and fixture cylinders on a CNC cell, where clean, regulated air protects valve spools and seals. The 40 um element stops particulate carryover, and the square psi gauge lets a setter verify clamp pressure against the fixture specification.
Start with the port step: the 300 size carries PT1/2 here, and moving to 200 or 400 changes the port and the flow capacity, so match the size to the air demand of the circuit rather than to the pipe alone. Drain choice matters in practice: the differential-pressure drain on this unit needs no operator attention, an automatic drain (code A) suits lines with heavy condensate, and a manual drain (code M) suits intermittent duty. Filtration grade is 40 um as standard; specify the W code for 5 um where finer protection is required. The fitted square gauge here reads in psi; MPa and bar scales and an external round gauge are alternatives. Thread is PT as standard, with G (BSPP) and NPT as order options, and this configuration is supplied without a mounting bracket (code J).
Because flow is published as curves and not as a single rated number, we do not quote a rated flow for this unit. Send us your application details and we will confirm the datasheet figures and the right size 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 GFR300 series as curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application and required flow, and we will confirm the datasheet curve and check the sizing against your demand before you order.
This configuration has a differential-pressure drain, which discharges collected condensate automatically when the pressure differential across the bowl rises, so no operator action is needed. If your line has heavy condensate load you can order the automatic-drain version (code A), or the manual-drain version (code M) for intermittent duty; note that the manual-drain version has a wider 0.05-0.9 MPa regulator adjustment range, while the differential-pressure and automatic versions adjust from 0.15-0.9 MPa (20-130 psi).
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.