The AirTAC GFR300C10ALJF2TK AirTAC Filter Regulator NPT3/8 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 GFR300C10ALJF2TK is a GFR-series filter regulator: one body that removes water and particulate from compressed air and regulates the pressure delivered downstream. This size 300 configuration is built with 3/8 in NPT ports, an automatic drain that clears collected condensate without manual attention, a standard 40 um filter element and a metal bowl. The regulator is the low-pressure type, an embedded square gauge scaled in psi is fitted, and a reverse/check valve is included to hold the regulated downstream pressure if the main supply dips. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). No mounting bracket is supplied with this code.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and the catalogue offers manual or differential-pressure drains, a 5 um element (code W), gauge scales in MPa, psi or bar, an external round gauge, G (BSPP) or NPT threads in place of the PT standard, and an optional mounting bracket. Because AirTAC publishes flow only as curves rather than a single rated figure - and the adjustment range of the low-pressure type is not stated in the catalogue - we confirm flow, sizing and any datasheet figure on request before you order.
| Model | GFR300C10ALJF2TK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
Filtering and regulating the air feeding spray guns and air-assist valves in a paint finishing booth. The low-pressure regulator type is chosen for circuits that run at reduced settings, while the 40 um element and automatic drain keep water and dirt out of the finish equipment.
Conditioning the supply to clamp cylinders on a machining fixture. The fitted reverse/check valve helps hold the regulated downstream pressure if the plant supply dips, so clamped workpieces stay held through the cutting cycle.
Supplying clean, regulated air to the diverter gates and stoppers along a distribution-centre conveyor. The automatic drain discharges collected condensate during operation, and the metal bowl is fitted on this configuration for the plant air room.
Every choice in this code is decodable. Size 300 with 3/8 in NPT ports sits in the middle of the GFR range; step up to size 400 or 600 if your circuit's demand sits near the top of the flow curve, or down to 200 for compact points of use. Drain type is a real decision: differential-pressure is the default, automatic (this unit, code A) clears condensate on its own, and manual (code M) puts discharge in the operator's hands. Filter grade is 40 um standard or 5 um with code W for finer particulate. The gauge here is the embedded square type scaled in psi; MPa and bar scales and an external round gauge are alternatives. Thread is PT as standard across the family, with G (BSPP) and NPT as order options, and a mounting bracket can be added where this code omits it. AirTAC publishes flow as curves rather than a single rating, so send us your inlet pressure and air demand and we will confirm sizing from 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 the GFR series as curves rather than a single rated figure, so we do not quote a number here. Send us your inlet pressure and the air demand of your circuit and we will confirm the sizing from the datasheet on request.
This unit carries code A: an automatic drain that discharges collected condensate from the bowl without anyone having to open it. The GFR family is also available with a differential-pressure drain (the catalogue default) or a manual drain (code M). The drain type is part of the model code, so specify it when you order.
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.