The AirTAC GFR300C10LJC2TK 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 GFR300C10LJC2TK is a size 300 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built for low-pressure circuits: it carries a 40 um standard filter element, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, a round external pressure gauge scaled in psi, and a built-in reverse/check valve that holds the downstream setting if the supply drops. The 3/8 in NPT port suits medium-flow branch lines, and the unit ships without a mounting bracket.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port options from 1/8 to 1 inch, a choice of 40 um or 5 um (W) filtration, manual or automatic drain variants, square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application before ordering.
| Model | GFR300C10LJC2TK 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) |
On a carton-sealing or case-packing line where clamp cylinders are held at a gentle, controlled pressure, this low-pressure filter regulator conditions the branch air, removes moisture and chips before they reach the valves, and the check valve holds the clamp setting through brief supply dips.
A test bench running pneumatic fixtures at reduced supply pressure needs clean, steady air: the 40 um element strips water and particulate ahead of the bench, the psi-scaled round gauge gives a direct reading for test records, and the 3/8 in NPT port ties into standard bench plumbing.
Sorting and diverter gates on a conveyor run many short strokes per minute; conditioning their branch supply with this filter regulator keeps moisture and debris out of the directional valves, while the differential-pressure drain clears condensate automatically during continuous flow.
Start with the port step: size 300 with a 3/8 in port sits in the middle of the GFR range, so step up to size 400 or 600 if your line demands more flow, or down to size 200 for compact branches. Because flow is published as curves and not a single rated number, send us your consumption figures and we will confirm the correct size against the datasheet. This unit is the low-pressure (L) type, so confirm your working band suits it; the exact adjustment range for the low-pressure version is available on request. The 40 um element is the standard grade; specify the W code if you need 5 um. Drain is differential-pressure here, which suits steady-flow lines; a manual-drain variant exists for intermittent-flow duty. The round psi gauge is fitted as coded; embedded square gauges and MPa or bar scales are the alternatives. NPT is the thread on this unit, with G (BSPP) and PT available to order, and the J code means no mounting bracket is included.
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 one number. Tell us your operating pressure and air consumption and we will confirm the sizing from the datasheet for your application before you order.
The L code marks this as the low-pressure version of the GFR300, intended for circuits that run below the standard regulator band. Its exact adjustment range is not published in the standard table, so ask us to confirm it from the datasheet. The fitted round gauge is scaled in psi so you can read and set the downstream pressure directly; MPa or bar scales and the embedded square gauge are available as alternatives.
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.