The AirTAC GFR30015MLJF3TK 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 GFR30015MLJF3TK is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air with the standard 40 um element, drains collected condensate by hand via the manual drain, and regulates downstream pressure with the low-pressure regulator type. This configuration is fitted with an embedded square gauge scaled in bar, a reverse/check valve to hold downstream pressure, and no mounting bracket. The 1/2 inch port is NPT thread, and the polycarbonate bowl is rated with the unit for a maximum inlet pressure of 1.0 MPa (145 psi) at -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR300 size class of the G-series air-treatment range, which spans sizes 200, 300, 400 and 600. Related configurations offer a 5 um element (code W), automatic or differential-pressure draining, G (BSPP) or NPT thread options, alternative gauge scales (MPa/psi/bar) and an optional external round gauge. Flow figures for this series are published as curves rather than a single rating, so we confirm datasheet and sizing figures on request.
| Model | GFR30015MLJF3TK 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, bar 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 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) |
Feeding clamps and workholding cylinders on a CNC machining cell, where filtered air and a low-pressure regulated supply hold parts securely without over-pressurising the fixture circuit. The check valve keeps the clamp holding if upstream pressure dips.
Conditioning air for diverters, pushers and stop cylinders along a packaging conveyor, with the manual drain emptied during scheduled changeovers and the bar-scale gauge giving operators a visible setpoint check at the machine.
Providing clean, particulate-free air at a controlled low pressure to bench-top test and instrumentation rigs, where the low-pressure regulator type suits circuits that must not see full line pressure and the check valve protects the rig from upstream loss.
Size 300 with a 1/2 inch port sits mid-range in the GFR family: step up to size 400/600 or down to 200 depending on the pipe diameter and the flow your line needs. Drain choice is a real decision here - this unit is manual drain (drain by hand), while automatic and differential-pressure drain versions empty the bowl without operator attention. The 40 um element is standard; specify the W option for a 5 um grade where finer filtration is needed. The fitted square gauge reads in bar; MPa and psi scales and an external round gauge are alternatives. PT is the standard thread and G (BSPP) or NPT are catalogue options - this unit is ordered with NPT. A bracket can be added if panel or wall fixing is required; this code omits it. Flow for this series is published as curves, not a single rating, so 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. 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 rather than a single rated figure, so no single l/min or SCFM number can be quoted honestly. We confirm the flow and sizing figures from the datasheet for your operating conditions on request - just tell us your line pressure and expected air demand before you order.
The M in the code means manual drain: condensate collected in the polycarbonate bowl is released by operating the drain by hand, which suits machines attended on a regular maintenance schedule. If the unit will be mounted out of reach or run unattended, an automatic-drain or differential-pressure-drain version of the same GFR300 filter regulator is the better decode - ask us for the alternative model code.
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.