The AirTAC GFR300C10ALJC2WT AirTAC Filter Regulator, NPT3/8, 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 GFR300C10ALJC2WT is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built with a 3/8 in NPT port, an automatic drain that clears collected condensate on its own, a fine 5 um filter element (the W grade, against the 40 um standard), a low-pressure regulator type, and a round gauge scaled in psi. It is supplied without a reverse/check valve and without a mounting bracket, and the bowl on this unit is metal. 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, drains, filter grades, gauges and thread forms, so a matching unit can be specified for most circuits. Because the exact regulation range of the low-pressure type is not published in the standard tables, and flow is given as curves rather than a single rating, we confirm both from the datasheet on request before you order.
| Model | GFR300C10ALJC2WT AirTAC Filter Regulator, NPT3/8, 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) |
Feeds filtered, regulated air to the cylinder and valve stack on a carton-forming packaging machine. The 5 um element protects downstream seals and the automatic drain clears condensate without daily attention at an out-of-the-way install point.
Sits ahead of the workholding-clamp circuit on a CNC machining centre, conditioning the air and holding a lower regulated setting on circuits that run below the pressures a standard-range regulator is set up for.
Conditions the supply feeding benchtop analytical instruments and air-actuated lab valves, with the round psi gauge giving a direct local reading and the 5 um element guarding sensitive internal components.
Size 300 with a 3/8 in port sits in the middle of the GFR range; step up to 400 or 600, or down to 200, as your circuit's flow demand dictates - we check the published flow curves against your application before ordering. Drain choice is real: automatic (this unit, code A) for installations you do not want to attend daily, manual (M) where controlled blowdown is preferred, or the differential-pressure default. Filter grade is 40 um standard or 5 um with code W - this unit carries the 5 um element for finer protection. Gauge options are an embedded square gauge or an external round gauge, with MPa, psi or bar scales; this configuration has a round psi gauge. Thread is PT as standard, with G (BSPP) and NPT as order options - this unit is NPT. Bracket J means no mounting bracket is included; order one separately if panel or wall fixing is needed.
Because flow is published as curves rather than a single rated figure, ask us to confirm sizing against your application 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 series as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure, port size and the equipment you are feeding, and we will confirm the flow from the datasheet and check the sizing against your application before you order.
Code A in the model means an automatic drain, which expels collected condensate from the metal bowl on its own - useful where the unit is mounted in a hard-to-reach spot. The alternatives in the GFR range are a manual drain (code M), where an operator drains the bowl, and the differential-pressure drain, which is the default when no drain code is given.
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.