The AirTAC GFR300-15C1T AirTAC Filter Regulator NPT1/2 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 GFR300-15C1T is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit is fitted with 1/2 in NPT ports, the standard 40 um filter element, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough. The regulator is the standard type with an adjustment range of 0.15-0.9 MPa (20-130 psi), and this configuration carries a round pressure gauge scaled in MPa. The polycarbonate bowl and mounting bracket are included.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch. Drain type, filter grade (40 um standard or 5 um with the W code), gauge style and scale, thread (PT standard, G and NPT as order options) and bracket choice can all be specified. Flow is published as curves rather than a single rating, so ask us to confirm the figures against your application before ordering.
| Model | GFR300-15C1T AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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 — round, 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. 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. 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) |
Feeding a pneumatic press cylinder on a metal-stamping cell: the GFR300-15C1T strips water and swarf from the plant air line and holds the cylinder working pressure steady at the set point, with the MPa gauge giving the operator a direct pressure readout.
Supplying air to diverter gates and stopper cylinders on a bottling-line conveyor, where condensate carried over from the compressor would otherwise stick valves - the differential-pressure drain clears the bowl without stopping the line.
Conditioning the air feed to a robotic pick-and-place gripper circuit, where the 40 um element protects the small control valves from particulate and the regulator keeps grip pressure consistent between cycles.
Size 300 with 1/2 in NPT ports sits in the middle of the GFR range; step up to 400 or 600 or down to 200 depending on the flow your line needs - we will confirm the flow curve for any size on request. The 40 um element suits general plant air; specify the W code for 5 um where finer filtration is wanted. The differential-pressure drain on this unit needs no operator attention, but manual-drain and automatic-drain versions exist if your maintenance routine calls for them. The round MPa gauge fitted here can be swapped for an embedded square gauge, and psi or bar scales are available. PT is the standard thread; G (BSPP) and NPT are order options. A bracket is included with this code.
Before ordering, send us your application details: flow is published as curves, not a single rated figure, so we confirm sizing from the datasheet rather than guessing.
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 number, so we do not quote a figure here. Tell us your working pressure and the flow your application needs, and we will confirm the correct size from the datasheet before you order.
This code has no drain letter, so it carries the differential-pressure drain: condensate is discharged automatically when the pressure drop across the 40 um element rises, with no operator input. If you prefer a manual drain (code M, which also widens the regulation range to 0.05-0.9 MPa) or a fully automatic drain (code A), those are order options on the same size 300 body.
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.