The AirTAC GFR300C10ALJF2WG AirTAC Filter Regulator G3/8 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 GFR300C10ALJF2WG is a filter regulator: water and particulate filtration plus pressure regulation combined in a single GFR300 body. This configuration is built with G3/8 (BSPP) ports, a 5 um filter element for finer air cleaning than the standard 40 um grade, an automatic drain that expels collected condensate without manual attention, and an embedded square gauge reading in psi. It is the low-pressure type, intended for circuits regulated below standard-line pressures, and it ships without a mounting bracket. The metal bowl holds the drained condensate and the filter element.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, thread types (PT standard; G and NPT as order options), drain types, filter grades and gauge scales, so a matching unit can be specified for most compressed-air circuits. 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 | GFR300C10ALJF2WG AirTAC Filter Regulator G3/8 |
|---|---|
| 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) |
Packaging lines often run clamp and hold-down cylinders at reduced pressure to avoid crushing cartons. A low-pressure type filter regulator set at the station supplies cleaned, regulated air to those cylinders, while the automatic drain keeps condensate out of the valves between shifts.
Spray guns and coating heads are sensitive to both water carryover and pressure drift. The 5 um element strips finer particulate than the standard grade ahead of the gun, and the regulated output holds the atomising pressure steady at the reduced setting the finish requires.
Sorting and diverting stations fire pneumatic actuators hundreds of times per shift. Feeding them from a filter regulator with an automatic drain and a visible psi gauge keeps moisture out of the directional valves and lets the line setter read and hold the actuation pressure directly.
Size up from the port and flow side first: GFR300 with its 3/8 in ports sits in the middle of the 200/300/400/600 range, and the right size depends on the air demand of the circuit rather than the pipe alone. This unit already carries the finer 5 um element (code W) instead of the standard 40 um grade, an automatic drain instead of manual or differential-pressure draining, a square psi gauge, and the low-pressure regulator type. If your circuit runs at reduced pressure rather than near full line pressure, the low-pressure type is the correct choice; its exact regulation range is not published in the standard tables, so confirm it with us. Thread is G here, with PT (standard) and NPT available as order options, and a bracket can be added if this J-coded no-bracket version does not suit your mounting.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated number, so we cannot quote a rated flow figure. Send us your application's air demand and we will confirm the sizing against the datasheet curves 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 the GFR family as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number for this unit. Tell us your application's air demand and we will confirm the sizing against the datasheet curves on request before you order.
This is the low-pressure type (code L) of the GFR300, intended for circuits regulated below standard-line pressures. Its exact regulation range is not published in the standard tables, so we do not state a figure here - ask us and we will confirm the range from the datasheet. The maximum inlet pressure remains 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
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.