The AirTAC AirTAC GFR300C10C3WTK Filter Regulator 3/8 NPT 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 AirTAC GFR300C10C3WTK is a size-300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration is built with 3/8 in NPT ports, a fine 5 um filter element, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, a round pressure gauge reading in bar, and a built-in reverse/check valve that holds downstream pressure when the upstream supply is lost. A mounting bracket is included.
This is a genuine AirTAC part from the GFR range, which spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, standard 40 um or fine 5 um filtration, differential-pressure, automatic or manual drains, and MPa, psi or bar gauge scales. Flow figures for this series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | AirTAC GFR300C10C3WTK Filter Regulator 3/8 NPT 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. |
|---|---|
| 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 ahead of the tool-clamp and chip-blow-off circuits on a CNC machining centre; the 5 um element protects the spindle-clamp valve while the check valve holds clamp pressure through an upstream pressure dip.
Filtering and regulating the supply to carton-closing and taping cylinders on a packaging conveyor, where the differential-pressure drain keeps condensate moving out during continuous shift-long running.
Point-of-use air conditioning for pneumatic grippers and pick-and-place actuators in a robotic cell, with the bar gauge giving operators a local setpoint readout and the bracket allowing compact mounting beside the manifold.
Size 300 with 3/8 in NPT ports suits medium-flow circuits; step up to size 400 or 600, or down to size 200, as your line size and air demand dictate. The 5 um element (code W) is the finer choice over the standard 40 um grade - useful ahead of valves, cylinders and sensitive components. The differential-pressure drain works automatically in continuous-flow service; choose automatic or manual drain codes if your duty cycle differs. The round gauge here reads in bar; square embedded gauges and MPa or psi scales are also available. NPT is the thread on this unit, with PT and G (BSPP) offered across the range, and the included bracket simplifies panel or wall mounting.
Because flow for this series is published as curves rather than a single rated figure, 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 the GFR series as performance curves rather than a single rated figure, so no one flow number applies. Send us your line size and air demand and we will confirm the datasheet curve figures for this 3/8 in size-300 unit on request.
The W in the code specifies the fine 5 um filter grade instead of the standard 40 um element, giving cleaner air for sensitive valves and actuators. The K specifies a built-in reverse/check valve, which holds downstream pressure if the upstream supply drops - useful for circuits that must not lose position or clamping force.
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.