The AirTAC GFR30015MLF1TK 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 PT1/2" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR30015MLF1TK is a GFR300-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is a size-300 unit with 1/2 in NPT ports, a manual drain bowl in polycarbonate, a 40 um standard filter element, low-pressure regulation, a reverse/check valve fitted, and an embedded square pressure gauge with MPa scale. The manual drain means an operator opens the bowl drain to expel collected condensate as part of routine checks, rather than relying on an automatic or differential-pressure drain. 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 spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, thread options PT (standard), G and NPT, drain choices (differential-pressure, automatic or manual), a 5 um optional filter element (code W), and gauge scale choices of MPa, psi or bar. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR30015MLF1TK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Low-pressure 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, MPa scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 15 | Port size PT1/2". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
On a CNC machining cell, this filter regulator sits ahead of clamping cylinders, cleaning the shop air of water and swarf-carrying particulate and holding the clamping circuit at the low pressure the fixture designer specified, with the MPa gauge giving the operator a direct reading.
On a carton-sealing or wrapping line, the unit conditions the air feeding the line's actuators: the 40 um element strips condensate and pipe-scale before they reach valves, the regulator sets the working pressure for the sealing heads, and the manual drain is emptied during scheduled line cleans.
In a laboratory automation rig or pneumatic test bench, the low-pressure regulator lets technicians run the circuit at the gentle pressures delicate grippers and test fixtures need, while the filtered, regulated supply protects instruments downstream; the reverse/check valve helps hold the set condition.
Choose the size and port step against the air demand of your circuit: this unit is size 300 with 1/2 in NPT ports, and larger sizes carry larger ports and more flow capacity. Drain type is a real choice: manual (as here) needs a scheduled drain check, while automatic and differential-pressure drains discharge condensate without operator action. Filter grade is 40 um standard on this unit; the 5 um element (code W) is available where finer filtration is wanted. Gauge scale can be ordered as MPa, psi or bar, and thread can be PT (standard), G or NPT - this unit is the NPT option. A mounting bracket is included with this configuration.
One honest note before you order: flow for the GFR series is published as curves, not a single rated number, so we cannot quote a rated flow figure here. Ask us to confirm sizing against your application and we will check the datasheet with you before you buy.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow 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 rated flow, Cv or SCFM number for this unit. Tell us your application and air demand and we will confirm the sizing against the datasheet on request before you order.
This unit has a manual drain: an operator opens the bowl drain to expel collected water and contaminants during routine maintenance, rather than the drain discharging on its own. If you prefer unattended condensate removal, the GFR family is also available with automatic (code A) or differential-pressure (blank) drains - just ask and we will confirm the right variant for your installation.
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.