The AirTAC GFR300C10ALC3TK AirTAC Filter Regulator NPT3/8 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 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 GFR300C10ALC3TK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built for 3/8 in NPT ports at size 300, with an automatic drain that removes collected condensate from the polycarbonate bowl without manual attention, and the 40 um standard filter element. The regulator is the low-pressure type - the exact adjustment range is not published in the catalogue, and we confirm it on request. A round external gauge with a bar scale is fitted, a reverse (check) valve is fitted (code K), and the mounting bracket is included. 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 to 1 in, and offers drain choices (differential-pressure, automatic or manual), a 5 um element option (code W), gauge and thread options, and a no-bracket variant. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing from the datasheet against your application before ordering.
| Model | GFR300C10ALC3TK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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) |
Regulating and filtering supply air to pneumatic clamps that run below standard shop pressure. The low-pressure regulator type suits the reduced setting, while the 40 um element protects the clamp valves from particulate.
A filter regulator mounted ahead of the actuators on a bottling machine's pneumatic circuit, with the automatic drain clearing condensate from the bowl during continuous production shifts.
Conditioning the air feeding sorting diverters and stoppers, with the fitted check valve in the circuit as specified by the K code for this configuration.
Size 300 with 3/8 in NPT ports sits mid-range in the GFR line; step down to 200 or up to 400/600 for different porting and flow needs - ask us to check the flow curve against your demand before ordering. Drain: this unit is automatic; differential-pressure (the default) and manual (code M) versions also exist. Filter grade is the 40 um standard element; specify W for the 5 um option. The fitted round gauge reads in bar; the embedded square gauge with MPa, psi or bar scales is the other catalogue choice, and code N deletes the gauge. Thread here is NPT; PT is the standard and G (BSPP) is also an order option. The bracket is included (code J deletes it).
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's flow and pressure demand and we will confirm the sizing from the datasheet before you order.
C3 indicates a round external gauge with a bar scale is fitted; the standard alternative is the embedded square gauge with MPa, psi or bar scales, and code N omits the gauge entirely. K means a reverse (check) valve is fitted; leaving that position blank gives the version without it.
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.