The AirTAC GFR300C15LJNWTK AirTAC Filter Regulator NPT1/2, 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 GFR300C15LJNWTK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body for compressed air. This configuration is built with a 1/2 in NPT port, a fine 5 um filter element (the W grade, tighter than the standard 40 um), a differential-pressure drain that bleeds collected water automatically as flow passes through, and a low-pressure regulator type for circuits that run below standard working pressures. A reverse/check valve is fitted, and this unit is supplied without a gauge and without a mounting bracket.
This is a genuine AirTAC part from the GFR range, which spans sizes 200 to 600 with port options from 1/8 in to 1 in and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published by AirTAC as curves rather than a single rated figure, so ask us to confirm sizing and datasheet details against your application before ordering.
| Model | GFR300C15LJNWTK AirTAC Filter Regulator NPT1/2, 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) |
Feeding clean, regulated low-pressure air to gate and divert cylinders on a packaging conveyor, where the 5 um element protects the valve seats and the check valve holds the circuit against backflow.
Supplying filtered, low-pressure regulated air to clamping fixtures on a light assembly cell, with the differential-pressure drain keeping condensate out of the clamp actuators during continuous cycling.
Regulating and filtering plant air for dampers, diverters and small actuators on a process floor that runs below standard pressure, using the 1/2 in NPT connection to tie into the existing drop.
Start with the port: this unit is 1/2 in NPT, so match it to your line size and the flow your circuit needs - if your demand sits near or above the capacity of a 1/2 in port, step up to the GFR400 or GFR600 size rather than restricting. The 5 um element here suits circuits where finer particulate and water carryover control matter; the standard 40 um grade is available if your application does not need the finer filtration. The differential-pressure drain handles condensate automatically under flow; choose an automatic-drain or manual-drain variant if you prefer a different drain behaviour. Because this is the low-pressure regulator type, confirm your set pressure falls in the low-pressure band - we will confirm the exact range from the datasheet on request. No gauge is fitted with this code; gauge options and scales can be selected on other variants. Thread alternatives (PT or G) and a bracket are orderable options on the family. Flow figures are published as curves, not a single rating, so let us 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 this series as curves rather than a single rated figure, so we do not quote one number. Tell us your line pressure, set pressure and the air demand of your circuit, and we will confirm the sizing from the datasheet on request before you order.
The N in the code means no gauge is fitted, so you would read the downstream pressure on a separate gauge or select a GFR variant that includes one. The L in the code marks the low-pressure regulator type, intended for circuits running below standard working pressures; the exact adjustment band for this type is not published in our sheet, so ask us to confirm it from the datasheet on request.
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.