The AirTAC GFR300C10ALC2WT 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 GFR300C10ALC2WT is a size-300 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration is built for 3/8 in NPT ports, carries a fine 5 um filter element (the W grade, tighter than the standard 40 um), and drains condensate automatically, so the bowl empties itself as collected water reaches the set level - useful where nobody opens a drain valve on schedule. It is the low-pressure (L) type, intended for circuits regulated well below the standard range, and it ships with a round external gauge scaled in psi for direct downstream pressure reading. The bowl on this unit is metal, a mounting bracket is included, and max inlet pressure is 1.0 MPa (145 psi) with an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and is ordered with choices of drain type (differential-pressure, automatic or manual), filter grade (40 um standard or 5 um), gauge style and scale (embedded square or external round; MPa, psi or bar), thread form (PT standard, G or NPT to order) and bracket. Flow is published as curves rather than a single rated figure - ask us and we will confirm the datasheet figures for your application before you order.
| Model | GFR300C10ALC2WT 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) |
A pneumatic clamp fixture that must close gently at a low setpoint: the 5 um element protects the clamp valve from fine dirt, the low-pressure type holds the reduced setting, and the psi gauge lets the setter read the clamping pressure directly.
Feeding gauges, transducers and test manifolds where fine particulate matters: the 5 um grade cleans the supply, the automatic drain keeps condensate off the bench without daily attention, and the round psi gauge gives a local reading at the panel.
A conveyor line with light-duty cylinders running at reduced pressure: one body filters and regulates the drop line, the automatic drain handles overnight condensate, and the included bracket mounts the unit straight onto the machine frame.
Size and port set the capacity envelope: this unit is size 300 with 3/8 in NPT threads, one step up from the 1/4 in size-300 base, so step up to size 400 if your line may outgrow it. The 5 um element suits downstream equipment sensitive to fine particulate; choose the standard 40 um grade where only bulk water and coarse dirt matter. The automatic drain removes the manual drain routine - pick manual or differential-pressure drain only if your maintenance plan prefers it. The round psi gauge reads in the unit your US crew already works in; square embedded gauges and MPa or bar scales are the other catalogue options. NPT is the thread form on this code; PT is the AirTAC standard and G (BSPP) is available to order. A mounting bracket is included, and the low-pressure (L) type is the right pick when the regulated setpoint sits well below the standard regulator range. Because flow is published as curves rather than a single rating - and the exact regulation range of the low-pressure type is not in the published table - ask us to confirm sizing and range against your application before ordering.
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 number, so we do not quote a l/min or SCFM figure here. Tell us your line pressure and the air demand of the equipment downstream, and we will confirm the sizing from the datasheet curves before you order.
The L in the code marks the low-pressure regulator variant, intended for circuits regulated well below the standard GFR range. The exact range for this variant is not in the published table, so ask us to confirm it against your setpoint. Everything else decodes normally: 3/8 in NPT ports, 5 um element, automatic drain, round psi gauge, metal bowl and included bracket.
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.