The AirTAC GFR300C08JF1WTK AirTAC Filter Regulator NPT1/4 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 GFR300C08JF1WTK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration carries a 1/4 in NPT port, a 5 um filter element (the finer of the two catalogue grades), a differential-pressure drain, and a standard regulator adjustable from 0.15 to 0.9 MPa (20-130 psi). An embedded square gauge with MPa scale is fitted, a reverse/check valve is built in per the K code, and the unit is supplied without a mounting bracket (J code). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, square or round gauges with MPa, psi or bar scales, and PT, G or NPT threads. At size 300 the bowl is polycarbonate (PC). Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300C08JF1WTK AirTAC Filter Regulator NPT1/4 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. |
|---|---|
| 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) |
Point-of-use filter regulator feeding the pneumatic cylinders and grippers on a carton-forming and sealing line, with the 5 um element protecting directional valves from water and fine dirt.
Filtered, regulated air for the clamping and tool-change cylinders on a CNC machining cell, where the square MPa gauge lets the setter verify clamp pressure at a glance.
Clean, regulated supply for pneumatic quarter-turn actuators on valves at a water treatment plant, with the K-coded reverse/check valve built in as specified.
Size and port set the capacity: within GFR300 this unit takes a 1/4 in NPT connection, and the catalogue flow curves - not a single rated figure - define what it delivers, so match the curve to your demand. The 5 um element (code W) suits air that feeds precision valves or instruments; the standard 40 um grade is enough for general cylinder circuits. The differential-pressure drain bleeds condensate away as air passes the element, with no manual intervention. The embedded square MPa gauge reads outlet pressure directly; psi or bar scales and an external round gauge are order options. Threads come as PT (the standard), G or NPT - this unit is the NPT version - and a bracket can be specified if the no-bracket J option does not suit your mounting.
Because flow is published as curves, send us your air demand 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 the GFR300 as curves, not a single rated number, so there is no one figure we can quote. Send us your inlet pressure, set pressure and air demand and we will confirm the flow from the datasheet before you order.
The W in the code specifies the optional 5 um filter grade instead of the standard 40 um, for air feeding sensitive valves or instruments, and the K specifies a built-in reverse/check valve. Both are catalogue options on the GFR300; a version with 40 um filtration, no check valve, or a manual or automatic drain can be ordered instead.
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.