The AirTAC GFR300C15ALC3T 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 See datasheet 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 GFR300C15ALC3T is an AirTAC GFR-series filter regulator: one body that removes water and particulate from compressed air and regulates the pressure delivered downstream. This size 300 unit has a 1/2 in NPT port, an automatic drain that ejects collected condensate without manual attention, the standard 40 um filter element, and the low-pressure regulator variant fitted with an external round gauge reading in bar. A mounting bracket is included; no reverse/check valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, differential-pressure, automatic or manual drains, a 5 um (code W) element option, embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow for this series is published as curves rather than a single rating, so ask us to confirm sizing and any datasheet figure against your application before ordering.
| Model | GFR300C15ALC3T AirTAC Filter Regulator NPT1/2 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (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 — factory standard, Factory standard 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. |
|---|---|
| C1 | Port size See datasheet. 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). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Fixture clamps that hold workpieces through a weld cycle need clean air held at a reduced, stable setting. This filter regulator conditions the supply and regulates the clamp circuit, with the automatic drain keeping condensate out of the fixture valves between shifts.
Packaging machines often run sealing bars, hold-downs or label actuators at a lower setting than the main air ring. This low-pressure GFR300 filters the supply, regulates that reduced setting and shows it on the bar gauge, while the automatic drain protects the downstream valves.
Gripper and part-present cylinders on an assembly cell are sensitive to dirt and moisture in the air. Feeding them through this filter regulator keeps particulate and water out of the gripper valves and holds the reduced circuit pressure the gripper was set up for.
Size 300 with a 1/2 in port sits in the middle of the GFR range; step up to size 400/600 or down to 200 depending on the flow your line needs - we will check the published flow curves with you rather than quote a single number. This unit is the low-pressure regulator type, so confirm your set pressure with us first; the exact adjustment range for the L variant is not published in the data we hold. The automatic drain suits unattended duty; manual and differential-pressure drains are alternatives in the family. The 40 um element is standard - specify the W code if your circuit needs 5 um filtration. The fitted gauge is the external round type reading in bar; the embedded square gauge is the standard alternative, with MPa, psi and bar scales available. Thread here is NPT; PT is the standard thread and G is the other order option. A mounting bracket is included.
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 series as curves, not as a single rated figure, so we do not quote a number here. Send us your application details - port size, line pressure and the equipment downstream - and we will confirm the flow data from the datasheet before you order.
This GFR300 carries the L code, making it the low-pressure regulator variant rather than the standard type, intended for circuits set below the standard range. The exact adjustment range for the L variant is not published in the data we hold, so tell us your set pressure and we will confirm suitability from the datasheet. The fitted gauge reads in bar; MPa and psi scales are available as alternatives.
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.