The AirTAC GFR300C10ALNT 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 AirTAC GFR300C10ALNT combines water and particulate filtration with pressure regulation in a single size-300 body, so one component cleans the air and sets the downstream pressure on a 3/8 in NPT line. This configuration carries a 40 um filter element, an automatic drain that expels collected condensate without manual attention, and the low-pressure regulator type. No gauge is fitted on this variant, and a mounting bracket is included. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, PT (standard), G or NPT threads, manual, automatic or differential-pressure drains, a 5 um element option (code W), and gauge or no-gauge variants. Flow figures are published as curves rather than a single rating; ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C10ALNT 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) |
Mounted at the drop feeding a bench pneumatic press, the unit strips water and chips from the shop air line and holds a steady regulated supply to the press cylinder, with the automatic drain handling condensate between shifts.
Installed ahead of the air cylinders that drive a carton taping and folding station, it cleans the compressed air and regulates the supply to the sealing heads, while the automatic drain keeps moisture out of the valves on a line that runs unattended.
Fitted on the supply to the fixture-clamping circuit of a CNC machine cell, it removes particulate and water before the solenoid valves and regulates the pressure delivered to the clamps, with the included bracket simplifying cabinet or frame mounting.
Start with the size and port: this unit is size 300 with a 3/8 in NPT port, one step up from the 1/4 in size-200 units, so step up if your line demands more air. The automatic drain on this model suits points where nobody regularly walks past to bleed the bowl; choose manual drain where visits are routine and you want zero bleed, or differential-pressure drain as the catalogue default. The 40 um element is the standard grade; specify the W code for the 5 um element if downstream equipment needs finer filtration. This is the low-pressure regulator type; its exact regulation range is not published in the material we hold, so confirm it with us before ordering if your setpoint is critical. No gauge is fitted, so plan for external pressure indication if you need a setpoint reading. PT is the standard thread; G and NPT are order options, and this unit is supplied with a mounting bracket.
One honest note on sizing: AirTAC publishes flow as curves, not a single rated figure, so we cannot quote you a flow number here. Send us your application details and we will confirm the sizing against the datasheet 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 this family as curves rather than a single rated figure, so there is no one flow number we can honestly quote. Tell us your line pressure and the air demand of your equipment, and we will confirm the sizing against the datasheet on request.
The N in the code means no gauge is fitted, so add external pressure indication if you need to read the setpoint. The L in the code marks the low-pressure regulator type; its exact regulation range is not published in our current material, so confirm the range with us before ordering if your application runs at a low setpoint.
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.