The AirTAC GFR300C10C1WTK AirTAC Filter Regulator NPT3/8, 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 GFR300C10C1WTK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady, in one body. This configuration carries a 3/8 in NPT port, the optional 5 um filter element (the finer of the two catalogue grades), a differential-pressure drain, a round pressure gauge reading in MPa, and a built-in check valve that lets downstream air pass back through on reverse flow. Maximum inlet pressure is 1.0 MPa (145 psi) and the regulated output is adjustable from 0.15 to 0.9 MPa (20-130 psi). Operating temperature is -5 to 70 C, non-freezing, and the 300-size bowl is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family spans four sizes (200/300/400/600) with ports from 1/8 to 1 in, and options include 40 um or 5 um filtration, manual, automatic or differential-pressure drains, embedded square or external round gauges in MPa, psi or bar scales, a reverse-flow check valve, and PT, G or NPT threads. Flow for the series is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application.
| Model | GFR300C10C1WTK AirTAC Filter Regulator NPT3/8, 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) |
Clean, regulated air for the tool-clamp and tool-change cylinders and directional valves on a CNC machining center, with the 5 um element protecting the clamping circuit from fine particulate.
Steady downstream pressure for the pusher and closing cylinders on a carton-sealing or case-packing machine, where pressure drift shows up directly as crushed or under-sealed cartons.
Filtered, regulated air for the pneumatic actuation inside laboratory and analytical equipment, where the 5 um grade and a stable setpoint keep sensitive valve stacks working cleanly.
Step up or down by size and port: this 300 unit carries a 3/8 in NPT port, one step above 1/4 in, and flow capacity grows with size. Pick the element grade by duty: the 5 um grade on this code suits air feeding precision valves, cylinders and instruments, while the standard 40 um grade serves general shop air. Drain type is a real choice: differential-pressure (fitted here) drains passively with flow, automatic drains eject condensate on their own, and manual drains need a routine bleed. The round gauge on this unit reads in MPa; embedded square gauges and psi or bar scales are order options. Thread is NPT on this code (PT is the standard; G and NPT are catalogue options), and the mounting bracket is included. Because flow for the GFR series is published as curves, not a single rating, send us your pressure and 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 GFR series as curves rather than a single rated figure, so there is no one number we can honestly quote. Tell us your working pressure and air demand, and we will read the GFR300 curve and confirm sizing from the datasheet on request.
The code ends in W, which selects the optional 5 um element instead of the 40 um standard grade. The finer element strips more particulate before air reaches directional valves, cylinders and instruments. If your duty is general shop air, the 40 um standard grade is available on other codes in the same series.
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.