The AirTAC GFR300C10LNWT 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 GFR300C10LNWT is an AirTAC GFR-series filter regulator: a single body that removes water and particulate from compressed air and then regulates the pressure delivered downstream. This 300-size unit is threaded 3/8 in NPT, carries the 5 um filter element (code W), drains accumulated condensate by differential pressure, and is built as the low-pressure regulator type. No gauge is fitted on this variant, and a mounting bracket is included.
It is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um (W) filtration, gauge options, and PT (standard), G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm figures from the datasheet for your application.
| Model | GFR300C10LNWT 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) |
Supplies filtered, regulated air to pneumatic clamps and vises on a machining cell, keeping water and fine particles out of the clamp valves while holding a lower working pressure than the shop header.
Feeds sealing jaws and carton-closing cylinders on a packaging line where the downstream circuit runs at a reduced pressure, with the 5 um element protecting the directional valves.
Regulates air to diverter gates and stopper cylinders on a warehouse sortation conveyor, with the differential-pressure drain clearing condensate dropped out of the supply line.
Size the unit by the flow your line needs: step between 200, 300, 400 and 600 to match the port - 1/8, 1/4, 3/8, 1/2, 3/4 or 1 in - as demand rises. Choose the drain: differential pressure (this model), fully automatic, or manual where an operator can bleed the bowl. Filter grade is 40 um standard or 5 um with the W code (fitted here). Regulator variants come standard or low-pressure (this unit); gauge choices are an embedded square gauge or an external round gauge with MPa, psi or bar scales, or none (N). Threads: PT is the standard, with G (BSPP) and NPT as order options; brackets can be omitted with the J code. Because AirTAC publishes flow only as curves, not a single rated figure, send us your flow and pressure requirements 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 GFR flow as curves rather than a single rated figure, so we do not quote a number here. Tell us your inlet pressure and required flow, and we will confirm from the GFR300 datasheet whether this 3/8 in size suits your application before you order.
The N in the code means no gauge is fitted; variants with an embedded square gauge or an external round gauge in MPa, psi or bar scales can be ordered instead. The L code marks the low-pressure regulator type, whose exact adjustment range is not published in the catalogue, so we confirm it on request. This unit also carries the 5 um (W) filter element and a differential-pressure drain.
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.