The AirTAC GFR300C10MLNTK AirTAC Filter Regulator NPT3/8 Low-Pressure 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 GFR300C10MLNTK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 300-size unit is threaded NPT3/8, uses the standard 40 um filter element, and has a manual drain, so the bowl is emptied by opening its drain valve at service intervals. It is the low-pressure regulator type, is fitted with a reverse (check) valve, has no gauge, and includes a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the bowl on this unit is metal.
This is a genuine AirTAC part. The GFR family spans four sizes (200, 300, 400 and 600) covering ports from 1/8 in to 1 in, with PT as the standard thread and G (BSPP) or NPT available as order options. Other code options across the family include 5 um filtration (W), automatic or differential-pressure drains, gauges, and a reverse/check valve. AirTAC publishes flow for these units as curves rather than a single rated figure, so ask us to confirm flow and other datasheet figures for your application on request.
| Model | GFR300C10MLNTK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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) |
Point-of-use conditioning for the actuator supply on a packaging machine: the 40 um element strips water and particulate from the shop-air drop, the low-pressure regulator sets a stable supply to the machine's valve manifold, and the manual drain is emptied during scheduled shift checks.
Feeding guide, gate and stopper cylinders along a conveyor line: filtered and regulated air at the line drop protects the cylinders and control valves, and the manual drain suits a section that is bled down at the end of each production run.
Supplying clamping and hold-down fixtures in an assembly cell, where the low-pressure regulator type matches circuits run at reduced pressure and the 40 um element handles general plant air ahead of the fixture valves.
The real choices in this family are all decodable from the code. Step up or down a size (200, 300, 400, 600) to match the port and the flow your line needs - the two digits set the port (06 is 1/8 in, 08 is 1/4 in, 10 is 3/8 in, 15 is 1/2 in, 20 is 3/4 in, 25 is 1 in). Choose the drain: manual as on this unit, automatic, or the differential-pressure default. Choose the element: 40 um standard or 5 um (W) for finer filtration. Gauge, gauge scale, reverse/check valve and bracket are code options, and PT is the standard thread with G and NPT ordered as variants. One honest note: AirTAC publishes flow as curves, not a single rating, so send us your flow and pressure conditions 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 GFR units as curves rather than a single rated figure, so there is no one number we can quote. Send us your inlet pressure, set pressure and required flow, and we will confirm the sizing from the datasheet on request.
No. The N in the code means no gauge is fitted on this configuration. Gauges are a code option across the GFR family, so if you want one, ask us for the equivalent configuration with a gauge included.
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.