The AirTAC GFR300C10JC3WTK 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 AirTAC GFR300C10JC3WTK is a size-300 filter regulator: it removes water and particulate from compressed air and sets downstream pressure in one body. This configuration carries a 3/8 in NPT port, a fine 5 um filter element (the W grade, tighter than the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and a standard regulator adjustable from 0.15 to 0.9 MPa (20-130 psi). It ships configured with a round pressure gauge reading in bar, a built-in reverse/check valve that holds downstream pressure if the supply drops, and no mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and options across drain type, filter grade, gauge style and scale, thread form and bracket. Flow figures for this model are published as curves rather than a single rating, so ask us and we will confirm the datasheet numbers against your application before you order.
| Model | GFR300C10JC3WTK 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) |
Feeding clean, pressure-set air to pneumatic clamps, tool-change cylinders and chip-clearing jets on a machining centre, where the 5 um element protects fine valves from water and swarf-carried grit.
Supplying the tape heads, case erectors and flap-fold cylinders on a carton packaging line, with the regulator holding a steady setting so seal pressure stays consistent through the shift.
Conditioning air for grippers, pick-and-place actuators and screwdriver feeders at a robotic assembly station, where the check valve holds the circuit's pressure if the main supply dips.
Step up or down the size ladder (200/300/400/600) to match the port and flow path your line needs - the 300 size with its 3/8 in NPT port sits mid-range. Choose the drain to suit access: differential-pressure (this model) needs no daily attention, automatic drains continuously, and manual suits attended installations. Pick the filter grade for the job: 40 um is the standard element, the W code (as here) gives 5 um for finer protection. Gauge style (embedded square or external round) and scale (MPa, psi or bar) are selectable, as are PT (standard), G and NPT threads, and a bracket if you want panel fixing. Because flow is published as curves rather than a single rated figure, send us your application details and we will confirm sizing from 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 series as curves, not as a single rated number, so we do not quote a figure here. Tell us your application and required flow, and we will confirm the datasheet curve data for the GFR300 at your working pressure before you order.
The W code in the model selects the optional 5 um filter grade instead of the 40 um standard, giving finer protection for downstream valves and cylinders. The drain position is blank, which is the differential-pressure type: condensate is expelled automatically as air flows through, with no manual draining needed. Automatic and manual drains are available on other codes in the 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.