The AirTAC GFR300C10ALJF2W AirTAC Filter Regulator PT3/8 5 um 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 GFR300C10ALJF2W is a size 300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a 5 um filter element (code W), an automatic drain that expels collected condensate without manual attention, a metal bowl, and a low-pressure regulator type. Ports are PT3/8 (3/8 in). The embedded square gauge is fitted and reads in psi; an external round gauge is available as an option. No mounting bracket is included and no reverse/check valve is fitted.
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 can be ordered with manual, automatic or differential-pressure drains, 40 um or 5 um elements, gauges scaled in MPa, psi or bar, PT, G or NPT threads, and with or without a bracket. Flow is published as curves rather than a single rating, so we confirm flow and datasheet figures for your application on request.
| Model | GFR300C10ALJF2W AirTAC Filter Regulator PT3/8 5 um |
|---|---|
| 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) |
Feeding filtered, regulated low-pressure air to the pneumatic clamps and hold-downs on a carton-sealing or case-packing line, with the 5 um element protecting the clamp cylinders and the automatic drain handling condensate through shift-long runs.
Supplying clean, regulated pilot air to automated process valves on a water-treatment or chemical skid, where the low-pressure regulator type and psi-scaled square gauge let technicians set and verify pilot pressure at the panel.
Filtering and regulating the air feeding blow-off nozzles that clear rinse water from bottles on a filling-line conveyor, keeping water and 5 um-scale particulate out of the nozzles while the automatic drain keeps the bowl empty.
Start with the port step: this unit is size 300 with PT3/8 (3/8 in) ports; step up to size 400 or 600, or down to 200, as your circuit's flow demand dictates - we confirm the right size against the published flow curves before you order. Choose the drain: this version is automatic (condensate ejects itself); manual and differential-pressure drains are alternatives in the family. This unit has the 5 um element (W); the 40 um standard element suits general circuits where finer filtration is not required. The fitted square gauge reads psi; MPa or bar scales and an external round gauge are order options. Thread is PT as standard - G (BSPP) and NPT are catalogue options to order. A mounting bracket is optional; this configuration ships without one. Note this is the low-pressure regulator type: the exact adjustment range for the low-pressure variant is not published in the standard table, so ask us to confirm the set range for your application.
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. Tell us your inlet pressure and required downstream flow and we will confirm the sizing against the datasheet curves on request before you order.
This unit is the low-pressure regulator variant of the GFR300, intended where downstream pressure must be set lower than a standard regulator would normally run. The exact adjustment range for the low-pressure variant is not published in the standard table, so we confirm the achievable set range for your application on request. Maximum inlet pressure is 1.0 MPa (145 psi), and the fitted square gauge reads in psi.
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.