The AirTAC GFR300C15MLC1TK AirTAC Filter Regulator NPT1/2 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 GFR300C15MLC1TK is a size 300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built with a 1/2 in NPT port, a manual drain bowl in polycarbonate, a 40 um standard filter element, and a low-pressure regulator type for circuits that run at reduced set pressures. It ships as coded with a round MPa pressure gauge fitted, a reverse/check valve fitted, and a mounting bracket included. 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 from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in. Across the series you can order automatic, manual or differential-pressure drains, a 5 um (code W) filter element instead of the 40 um standard, square or round gauges with MPa, psi or bar scales, G (BSPP) or NPT threads in place of the PT standard, and bracket options. Flow is published in the catalogue as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C15MLC1TK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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 clamping cylinders on a machining fixture, where the filter strips water and swarf-laden condensate from the shop air and the low-pressure regulator holds a reduced, repeatable set pressure on the clamps.
Supplying the air cylinders that kick bottles between lanes on a filling line, with the 1/2 in port serving a manifold of actuators and the manual drain emptied during scheduled line washdowns.
Conditioning air ahead of paint spray guns in a body shop, where the 40 um element catches particulates and pipe scale and the regulator sets the lower delivery pressure the gun manufacturer calls for.
Start with the size and port: the 300 frame with a 1/2 in NPT port sits in the middle of the GFR range (200/300/400/600), so step up or down according to the air demand of the circuit - larger sizes carry larger ports and more flow. The manual drain on this unit means an operator opens the bowl drain during checks; choose the automatic drain if the installation is unattended, or the differential-pressure drain as the default. The 40 um element is the standard grade; specify code W for 5 um where finer filtration is needed. The round gauge fitted here reads in MPa; square embedded gauges and psi or bar scales are the alternatives. Thread is NPT on this coded unit - PT is the AirTAC standard and G (BSPP) is also an order option - and the bracket is included. One honest note before you order: flow is published as curves, not a single rating, so send us your application details and we will confirm sizing against the datasheet before you commit.
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, not as a single rated number, so we do not quote a l/min or SCFM figure. Send us your application details and we will confirm the flow and datasheet figures for this 1/2 in NPT, size 300 unit on request.
The M in the code specifies a manual drain bowl, which an operator opens during routine checks. The GFR series also offers an automatic drain (code A) and a differential-pressure drain (blank) as order options, so you can choose the drain type that matches how the installation is attended.
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.