The AirTAC GFR300C15MLF1WT 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 GFR300C15MLF1WT is a size 300 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built with a 1/2 in NPT port, a fine 5 um filter element (the tighter of the two catalogue grades), a manual drain on the bowl, and the low-pressure regulator type for circuits that run at reduced downstream pressure. An embedded square gauge scaled in MPa is fitted so the set pressure is visible at the unit, the metal bowl carries the collected condensate, the mounting bracket is included, and no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of PT (standard), G or NPT thread, differential-pressure, automatic or manual drains, 40 um or 5 um filtration, gauge and scale options, and standard or low-pressure regulator types. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300C15MLF1WT 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) |
On a robotic pick-and-place cell, this filter regulator cleans the plant air to 5 um and holds a reduced, stable supply pressure to the gripper circuit, with the MPa gauge letting technicians verify the set point at the unit.
Feeding diverters, stoppers and pusher cylinders on a packaging conveyor, the unit strips water and fine particles before they reach the valves, and the manual drain lets the line crew clear condensate during scheduled changeovers.
On a pneumatic test bench or lab automation rig, the low-pressure regulator type supports circuits that operate at reduced pressure, while the 5 um element protects sensitive instruments and pilot components from water and particulate carryover.
Size 300 with a 1/2 in NPT port suits lines whose pipe run is built on 1/2 in connections; step up to size 400 or 600, or down to 200, according to the flow your circuit needs. Because AirTAC publishes flow as curves and not as a single rated number, send us your demand and we will confirm the right size against the datasheet before you order. This unit already carries the 5 um element (W code) - choose 40 um where only coarse protection is needed. The manual drain means an operator opens the bowl drain periodically; if you cannot schedule that, ask about the automatic or differential-pressure drain variants. The fitted square gauge reads in MPa; psi and bar scales are available, and an external round gauge is optional. PT is the standard thread, with G and NPT as order options - this unit is the NPT version. The bracket is included; a no-bracket (J) variant exists for other families in the range.
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 figure, so we do not quote a number. Tell us your application's flow demand and we will confirm the correct size against the datasheet on request before you order.
The M in the code selects a manual drain: an operator opens the bowl drain to release collected condensate, which suits lines with regular maintenance windows; automatic and differential-pressure drain variants are available if that does not fit your routine. The L in the code selects the low-pressure regulator type, intended for circuits running at reduced downstream pressure - ask us to confirm its adjustment range from the datasheet.
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.