The AirTAC GFR300C10LNTK 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 GFR300C10LNTK is an AirTAC GFR-series filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This size 300 unit is threaded 3/8 in NPT, carries the 40 um standard filter element and the differential-pressure drain, and is built as the low-pressure (L) type for circuits regulated below the standard range. It is fitted with a reverse/check valve (K), includes a mounting bracket, and no pressure gauge is fitted (code N). Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and catalogue options including automatic or manual drains, a 5 um (W) filter element, gauge choices and G (BSPP) or NPT threads. 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 | GFR300C10LNTK 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) |
Regulating the air to clamp cylinders on a packaging machine where the downstream setpoint sits below the standard regulator range, with the 40 um element keeping debris out of the control valves.
Point-of-use filtration and regulation for a pick-and-place robot fed from a plant air main, with the fitted check valve holding downstream pressure if the supply dips.
Conditioning the air feeding a solenoid-valve manifold on an assembly line: water and particulate removed ahead of the valves and pressure held steady at a low regulated setpoint.
Work through the decodable choices in order. Size 300 with a 3/8 in port is the step that must match the air your circuit consumes - because AirTAC publishes flow as curves, not a single rating, ask us to confirm this unit against your line pressure, setpoint and demand before ordering. The L in the code selects the low-pressure regulator type, intended where the regulated setpoint sits below the standard range; the exact range for this type is not published, so confirm it with us. Drain is the differential-pressure type (automatic (A) and manual (M) are catalogue options), the element is 40 um standard with 5 um (W) available, and the trailing T fixes the thread as NPT - PT is the standard thread and G (BSPP) can be ordered instead. A mounting bracket is included and no gauge is supplied in this configuration.
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 GFR-series flow as curves rather than a single rated figure, so no flow number is quoted here. Send us your inlet pressure, regulated setpoint and air demand and we will confirm the sizing against the datasheet on request.
L selects the low-pressure regulator type, N means no pressure gauge is fitted, T is the NPT thread and K means a reverse/check valve is fitted, so downstream pressure is held if the upstream supply drops. The drain is the differential-pressure type and the element is the 40 um standard grade.
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.