The AirTAC AirTAC GFR300C15MLF3TK 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 GFR300C15MLF3TK is an AirTAC GFR300 filter regulator: a 40 um filter element and a pressure regulator combined in one body, sized for 1/2 in NPT ports. This configuration is the low-pressure type (L) with a manual drain (M), a metal bowl, an embedded square gauge reading in bar, a built-in reverse/check valve (K) and a mounting bracket. Water and particulate are removed from the compressed air, and the downstream pressure is set and read at the gauge. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing).
It is a genuine AirTAC part. The GFR family spans 200, 300, 400 and 600 sizes with PT, G and NPT threads, 40 um standard or 5 um (W) filtration, manual, automatic or differential-pressure drains, and gauge or no-gauge builds. Flow for the GFR300 is published as curves rather than a single rated figure, so send us your operating conditions and we will confirm the datasheet figures for your application on request.
| Model | AirTAC GFR300C15MLF3TK 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) |
Filtered, reduced air holds cartons and trays at the infeed without over-pressurising delicate grippers; the manual drain lets an operator clear condensate at the end of each shift.
A 40 um element and a low-pressure setting protect sensitive spray nozzles and reference gauges on the bench, while the bar-scale square gauge shows the set point at a glance.
Low-pressure air cushions glass bottles as they transfer between sections; the built-in check valve blocks back-flow if supply pressure dips, and the included bracket mounts the unit at the machine frame.
Size 300 with 1/2 in NPT ports suits circuits plumbed at 1/2 in; step up to 400 or 600, or down to 200, as your air demand changes - and because flow is published as curves rather than a single rating, ask us to confirm the sizing against your application before ordering. The L code makes this the low-pressure regulator type, intended for circuits set well below standard ranges; the exact adjustment span for this variant is not published as a single figure, so we confirm it on request.
Other real choices on this family: drain type (this unit is manual; automatic and differential-pressure drains are options), filter grade (40 um standard here, 5 um with code W), gauge and scale (this build carries the embedded square gauge in bar; an external round gauge is optional), thread (PT is the standard, G and NPT are catalogue options - this unit is NPT), and bracket (included here).
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 GFR300 as curves rather than a single rated figure, so we do not quote a number here. Send us your inlet pressure, set pressure and expected air demand, and we will confirm the sizing against the datasheet curves before you order.
L sets the low-pressure regulator version, intended for circuits held well below standard regulator settings. The exact adjustment span for this variant is not published as a single figure, so we confirm the set range against the datasheet on request. The rest of the decode is standard GFR300: manual drain, 40 um element, metal bowl, square bar gauge, check valve and bracket.
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.