The AirTAC GFR300C10F1WTK 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 GFR300C10F1WTK is a 300-size filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration carries a 3/8 in NPT port, a 5 um filter element (the finer of the two catalogue grades), a differential-pressure drain that bleeds accumulated condensate automatically whenever the pressure differential across the element rises, and a standard regulator adjustable from 0.15 to 0.9 MPa (20-130 psi). An embedded square gauge scaled in MPa is fitted, a reverse/check valve is included to hold downstream pressure when the supply drops, and a mounting bracket is supplied. Maximum 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 from the GFR filter-regulator line, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of 40 um standard or 5 um (W) filtration, differential-pressure, automatic or manual drains, square or optional external round gauges scaled in MPa, psi or bar, G (BSPP) or NPT thread options, and an optional no-bracket variant. Flow is published as curves rather than a single rating, so ask us to confirm the flow or datasheet figure for your application before ordering.
| Model | GFR300C10F1WTK 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-stabilised air to the clamping and tool-change cylinders of a CNC machining centre, where the 5 um element protects precision valves and the check valve holds clamp pressure if the shop supply dips.
Supplying the diverting cylinders and sealing heads on a carton packaging conveyor, where steady regulated pressure keeps seal timing consistent through a full shift and the differential-pressure drain handles condensate from continuous running.
Conditioning the air feed to a spray gun manifold in a finishing booth, where the 5 um grade reduces particulate carry-over into the finish and the regulator holds a stable gun pressure independent of header fluctuations.
Start with the port and size step: 300 size with a 3/8 in NPT port sits in the middle of the GFR range (200/300/400/600), so step up to 400 or 600 if your line needs more flow capacity, or down to 200 for compact circuits. This unit has the 5 um (W) element - choose it where downstream valves and cylinders need finer filtration than the 40 um standard grade; the differential-pressure drain suits continuous operation because it purges condensate without operator attention, while automatic (A) and manual (M) drains are available on other variants. The fitted square gauge reads in MPa; psi or bar scales and an external round gauge can be ordered. Thread is NPT here, with G (BSPP) as the alternative order option and PT as the catalogue standard. A bracket is included; a no-bracket (J) variant exists. Because flow 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 curves rather than a single rated figure, so no one flow number exists to quote. Send us your application details and we will confirm the relevant flow and datasheet figures for this 300-size, 3/8 in NPT unit before you order.
The W in the code specifies the 5 um filter element, the finer option alongside the 40 um standard grade - choose it to better protect downstream valves, cylinders and instruments. With no drain letter in the code, this unit uses the differential-pressure drain as its default: it purges the bowl automatically when the pressure differential across the element builds, with automatic (A) and manual (M) drains available as order options.
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.