The AirTAC GFR300C15MLF1T AirTAC Filter Regulator NPT1/2 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 GFR300C15MLF1T is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built around a 1/2 in NPT port, a manual drain bowl in metal, and the standard 40 um filter element, so it drops water and debris from the compressed air line and then holds a steady, reduced downstream pressure from one compact unit. It is a low-pressure regulator type fitted with an embedded square gauge reading in MPa, includes a mounting bracket, and has no reverse/check valve. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of manual, automatic or differential-pressure drains, an optional 5 um element (code W), gauge scale choices and G/NPT thread options. Because AirTAC publishes flow for this family as curves rather than a single rated figure, we confirm the exact flow and datasheet figures for your application on request - just ask before ordering.
| Model | GFR300C15MLF1T AirTAC Filter Regulator NPT1/2 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) |
On a CNC fixture or jig where clamp cylinders must close gently and hold at a reduced setting, this unit filters water and swarf carryover from the shop air and then regulates a steady low downstream pressure, with the MPa gauge giving the setter a direct reading at the machine.
Bag-seal and carton-closing cylinders on packaging conveyors misfire when line pressure wanders or moisture reaches the valves. Feeding them through this filter regulator removes water and particulate at the 40 um element and holds the reduced pressure the seal cylinders were set up for.
Spray guns and air-driven coating equipment are sensitive to water spots and dirt in the air stream. Mounted at the booth drop, this unit strips moisture and particles from the compressed air and regulates a stable, reduced supply pressure to the gun, with the manual drain emptied as part of booth housekeeping.
Start with the port and size step: the 300 size with its 1/2 in NPT port suits lines fed at that pipe size, and stepping up a size gives more flow capacity - but because flow is published as curves rather than one rating, tell us your application and we will confirm the right size before you order. The decodable choices on this unit are the drain (this one is manual, meaning you drain the metal bowl by hand; automatic and differential-pressure drains are available in the family), the filter grade (40 um standard here, 5 um with code W where finer filtration is needed), the gauge (embedded square gauge in MPa as fitted, with external round gauges and psi or bar scales as options) and the thread (PT is the standard; G and NPT are catalogue options - this unit is the NPT version). A low-pressure regulator type is fitted here; its exact regulation range is not published in the material we hold, so confirm it with us. Bracket is included. If your supply pressure, required downstream setting or flow demand is unusual, ask us to check the datasheet against your application first.
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 family as curves rather than a single rated figure, so we do not quote one number here. Tell us your line pressure, downstream setting and expected air demand, and we will confirm the flow and the full datasheet figures for this exact model on request before you order.
Manual drain means the metal bowl is emptied by hand when collected water builds up, rather than by an automatic or differential-pressure drain - a good fit where the unit is checked during normal maintenance rounds. The L in the code also marks this as the low-pressure regulator type; its exact regulation range is not published in the material we hold, so confirm the range with us against your application.
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.