The AirTAC GFR300C15MLF1TK 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 GFR300C15MLF1TK is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size-300 unit is configured with 1/2 in NPT ports, a 40 um standard filtration element, a manual drain bowl in metal, the low-pressure regulator type, an embedded square gauge scaled in MPa, a built-in reverse/check valve, and a mounting bracket. 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. The GFR family is published in sizes 200, 300, 400 and 600 with a choice of ports, thread standards (PT standard; G and NPT as order options), drain types, filter grades and gauge scales. Because flow is published as curves rather than a single rated figure, we confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C15MLF1TK 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 an assembly-cell clamping fixture that runs at reduced line pressure, this filter regulator cleans the supply and holds the set pressure to the clamp cylinders, with the check valve holding the circuit if upstream pressure dips.
Feeding tool-change actuators and pneumatic vise cylinders on a machining centre, the 40 um element strips water and pipe scale before the regulator delivers a steady, low-pressure supply to the machine's air panel.
At a spray booth where a metal bowl is preferred near coating materials, this unit filters the shop air and regulates the atomizing pressure at the gun manifold, with the manual drain emptied as part of the shift routine.
Size and port set the capacity envelope: this unit is size 300 with 1/2 in NPT ports; step up to size 400 or 600 when the circuit demands more flow, or down to 200 for compact drops. Drain type is a real choice: this configuration uses a manual drain, which means an operator opens the bowl drain periodically; automatic and differential-pressure drains are available on other codes if you cannot schedule that check. Filtration grade here is the 40 um standard element; specify the W code for the 5 um option where downstream valves need finer protection. The square gauge on this unit is scaled in MPa; psi and bar scales and an external round gauge are alternatives. Thread is NPT on this code, with PT as the catalogue standard and G (BSPP) also available; the bracket is included. Because flow is published as curves and not a single rating, ask us to confirm sizing against your application before ordering.
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 rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Send us your application details and we will confirm the flow and sizing figures from the datasheet on request before you order.
This code carries the M drain option: the bowl is emptied by opening the drain fitting periodically, which suits installations covered by a regular maintenance round. If you cannot schedule that check, GFR codes with an automatic drain (A) or the differential-pressure drain (the default) are available - just ask us to quote the matching model.
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.