The AirTAC GFR300C10LF3WTK AirTAC Filter Regulator 3/8 in NPT 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 GFR300C10LF3WTK is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This size 300 unit is threaded 3/8 in NPT, carries the 5 um element (code W) for finer filtration than the standard 40 um, and drains condensate by differential pressure. It is built as the low-pressure regulator type, comes with an embedded square gauge scaled in bar, includes a check valve (code K) that helps hold downstream pressure if the supply dips, has a metal bowl and includes a mounting bracket. 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 range spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and choices of drain type, filter grade, gauge scale, thread (PT standard; G and NPT are catalogue options to order), bracket and low-pressure or standard regulator type. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure for your application before ordering.
| Model | GFR300C10LF3WTK AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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) |
Filtered, low-pressure-regulated air to clamps and fixtures, with the fitted check valve helping hold clamp pressure if the main supply dips.
Clean 5 um air at a steady low setting for actuated fill and capping valves, with condensate carried off by the differential-pressure drain.
One body that filters plant air to 5 um and regulates it down for solenoid and pneumatic valves, with the bar-scaled square gauge for local setting.
Pick the size by the port and flow your circuit needs: this size 300 unit covers 3/8 in, with sizes 200, 400 and 600 stepping down or up. Drain choices are differential-pressure (the default, fitted here), automatic (A) or manual (M). Filtration is 40 um standard or 5 um with the W code, as this unit carries. Gauges are embedded square as standard with MPa, psi or bar scales - this one reads in bar - and an external round gauge is optional. Thread is PT as standard with G and NPT as order options; this unit is NPT. The L code marks the low-pressure regulator type, intended for circuits regulated well below standard line pressure; its exact adjustment range is not published, so confirm it with us. Flow appears in the catalogue as curves, not a single rated number, so send your flow and pressure requirements 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 we do not quote a number here. Send us your required flow and upstream and downstream pressures and we will confirm sizing from the datasheet on request.
The L code means this GFR is built as the low-pressure regulator type, for circuits regulated well below standard line pressure. The exact adjustment range for the low-pressure type is not published in our material, so confirm it with us. Maximum inlet pressure remains 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
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.