The AirTAC GFR300C10LJC3T 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 GFR300C10LJC3T is a filter regulator: one body that removes water and particulate from compressed air and then regulates its pressure, so a single component covers both air-preparation jobs. This size 300 unit is threaded NPT3/8 (3/8 in), carries the standard 40 um filter element, and drains collected condensate through a differential-pressure drain on its metal bowl - no drain cock to open during operation. The regulator is the low-pressure type, intended for circuits that work below the standard regulator band, and the C3 code fits the external round gauge reading in bar. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. This variant is ordered without a mounting bracket, and no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options include a 5 um element (code W), automatic or manual drains, embedded square or external round gauges with MPa, psi or bar scales, G (BSPP) or NPT threads in place of the PT standard, and standard or low-pressure regulator types. AirTAC publishes GFR flow as curves rather than a single rated figure, so we confirm flow and datasheet figures for your application on request.
| Model | GFR300C10LJC3T 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) |
Filter the plant air supply to 40 um and hold a low, stable working pressure on clamping cylinders, with the round bar gauge giving operators a direct readout of the set pressure at the fixture.
A single-body filter regulator conditioning air to sealing, diverting and pusher cylinders, with the differential-pressure drain carrying condensed water away through long production runs without operator attention.
Regulating a filtered, gentle air stream for thread guidance and lint clearing, where the low-pressure regulator type is chosen because standard regulator ranges sit above the working band the yarn path needs.
Start with size and port: this unit is size 300 with a 3/8 in NPT port, and the family steps 200/300/400/600 with ports from 1/8 in to 1 in, so move up a size when the circuit demands more air. Next, drain type: the differential-pressure drain on this unit discharges condensate using the pressure drop across the element and suits steady-flow duty; automatic (A) or manual (M) drains can be ordered in the same size for intermittent or low-flow duty. Filter grade is 40 um as standard, with the finer 5 um element (code W) available when downstream components need tighter protection. On gauges, this code carries the external round gauge with a bar scale; the embedded square gauge with MPa, psi or bar scales is the alternative. Thread: PT is the catalogue standard and G (BSPP) or NPT are order options - this unit is ordered with NPT. The J code means no mounting bracket is supplied. Because AirTAC publishes flow only as curves, not a single rating, ask us to confirm sizing against your application before ordering.
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 GFR300 flow as curves rather than a single rated figure, so we do not quote a number here. Send us your required flow and working pressure and we will confirm sizing against the datasheet curves for this exact unit before you order.
It uses the pressure drop across the 40 um filter element to discharge collected condensate from the bowl automatically, with no drain cock to open during operation. It suits steady-flow duty; for intermittent or low-flow circuits, the automatic (A) or manual (M) drain versions can be ordered in the same size 300, NPT3/8 configuration.
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.