The AirTAC GFR300C08LJC2WTK AirTAC Filter Regulator NPT1/4 5um 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 GFR300C08LJC2WTK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This configuration is the 300 size with a 1/4 in NPT port, fitted with the fine 5 um filter element (code W) instead of the standard 40 um, the standard differential-pressure drain, and the low-pressure regulator type. It also carries a reverse/check valve and an external round pressure gauge reading in psi, and it is ordered without a mounting bracket (code J). Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The 300-size bowl is polycarbonate (PC).
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 for drain type, filter grade, gauge style and scale, thread (PT standard, G and NPT as order options), bracket and reverse valve. Rated flow for this unit is published as a curve rather than a single figure, so ask us and we will confirm the datasheet numbers for your application before you order.
| Model | GFR300C08LJC2WTK AirTAC Filter Regulator NPT1/4 5um |
|---|---|
| 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Feeds filtered, finely regulated low-pressure air to vacuum ejectors and small gripper cylinders on a pick-and-place cell, where the 5 um element helps protect sensitive actuation from fine particulate.
Sits at the drop of a bottling or cartoning line to condition air for gate, clamp and pusher cylinders, with the round psi gauge giving operators a local pressure readout at the machine.
Provides clean, low-pressure regulated air to bench-scale process skids and test rigs, where the check valve holds the set circuit against backflow and the 5 um grade suits instrumentation air.
Start with the port step: this unit is 300 size with a 1/4 in NPT port, so match it to the line size and the air demand of the circuit it feeds. The 5 um element (code W) suits points of use that need finer particulate capture than the standard 40 um grade. The differential-pressure drain is the standard condensate option; automatic and manual drains are available in the family if your installation prefers them. The low-pressure regulator type is chosen where the controlled pressure sits below what a standard regulator targets - its exact adjustment range is not published in the material we hold, so confirm it with us. The round psi gauge is fitted here; embedded square gauges and MPa or bar scales are the other catalogue choices. NPT is an order-option thread (PT is the catalogue standard), and this configuration comes without a bracket.
Because flow is published as curves rather than a single rating, we cannot quote one number here. Send us your application details and we will confirm sizing against 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 this unit as a curve rather than a single rated figure, so we do not quote one number on the page. Tell us your line size and air demand and we will confirm the datasheet flow figures for the GFR300 at 1/4 in NPT against your application before you order.
W selects the fine 5 um filter element in place of the standard 40 um grade, which suits points of use that need finer particulate capture. The C2 in the code fits an external round gauge with a psi scale; an embedded square gauge, and MPa or bar scales, are the other catalogue options. This unit is also the low-pressure regulator type and comes without a bracket.
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.