The AirTAC GFR300C15LJC1WT AirTAC Filter Regulator NPT1/2 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 GFR300C15LJC1WT is a filter regulator: it removes water and particulate from compressed air and sets downstream pressure in a single 300-size body with a 1/2 in NPT port. This configuration is the low-pressure type, fitted with a 5 um filter element (code W) for finer filtration than the standard 40 um grade, a differential-pressure drain that bleeds collected condensate whenever the pressure differential across the element rises, and an external round gauge reading in MPa. It is supplied without a mounting bracket, so plan to mount it by its ported pipework or a customer-supplied plate.
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 options including manual or automatic drains, 40 um or 5 um elements, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so we confirm the datasheet and sizing figures on request before you order.
| Model | GFR300C15LJC1WT AirTAC Filter Regulator NPT1/2 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 tray packing machine, the clamp and hold-down cylinders often need a gentle, stable setting well below normal line pressure. This low-pressure type filter regulator cleans the shop air to 5 um and holds that reduced setting for the clamp circuit, with the MPa gauge giving the operator a clear reference.
Web-handling stations, air flotation tables and low-pressure air knives on a converting or printing line run on reduced, steady air. This unit filters water and fine particulate from the supply and regulates it down in one body, and the differential-pressure drain keeps condensate moving out without operator intervention.
Bench-scale reactors, pneumatic sample conveyors and lab actuation circuits need clean, finely filtered air at a low, repeatable setting. The 5 um element protects sensitive instruments and valves, the round MPa gauge documents the setting, and the 1/2 in NPT port ties into the lab drop.
Start with the port step: this unit is a 300 size with a 1/2 in NPT port, so match it to your line size and let the flow curves - not a single rated number - decide whether 300 is the right step for your demand. The 5 um element suits circuits that see fine particulate or sensitive downstream valves and cylinders; the standard 40 um grade remains available if coarse protection is enough. The differential-pressure drain is the default and needs no operator attention beyond periodic checks; a manual or automatic drain can be ordered instead. The round MPa gauge is fitted here; square gauges and psi or bar scales are alternatives. PT is the standard thread and G or NPT are order options - this code carries NPT. No mounting bracket is included with the J suffix.
Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application - including the low-pressure setting range - 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 flow for the GFR series as curves, not as a single rated number, so we do not quote a rated flow, Cv or l/min figure. Tell us your line pressure, downstream setting and air demand, and we will confirm the sizing against the datasheet curves on request before you order.
The W in the code selects the optional 5 um filter element instead of the 40 um standard grade, for finer particulate and water removal ahead of sensitive valves, cylinders or instruments. The L selects the low-pressure regulator type, intended for reduced downstream settings; its exact range is not published, so we confirm it from the datasheet on request. Both are factory-built options on the same GFR300 filter regulator body.
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.