The AirTAC GFR40015MLJF2GK AirTAC Filter Regulator G1/2 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 GFR400-15MLJF2GK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is built with a G1/2 (BSPP) female port, a manual drain bowl in polycarbonate, a 40 um standard filter element, and the low-pressure regulator type for circuits that run at reduced pressures. The embedded square gauge reads in psi, and a reverse/check valve is fitted so downstream pressure is held if upstream supply is interrupted. 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. The GFR family is available in sizes 200, 300, 400 and 600, with port options from 1/8 to 1 inch, PT as the standard thread and G or NPT as order options, a choice of differential-pressure, automatic or manual draining, 40 um or 5 um (W) filtration, standard or low-pressure regulation, gauge and bracket options, and an optional reverse valve. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and flow figures for your application before ordering.
| Model | GFR40015MLJF2GK AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (G (BSPP) 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, psi 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.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 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. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) 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 | GFR400 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeds filtered, pressure-controlled air to a 1/2-inch-plumbed packaging machine section. The manual drain bowl is emptied during scheduled changeovers, and the psi gauge lets operators verify set pressure at a glance.
Suits a pneumatic press or forming station that runs its actuators at reduced pressure. The low-pressure regulator type is intended for these circuits, and the fitted reverse/check valve holds the set pressure if the plant air supply drops.
Supplies a workholding or clamping circuit where losing air mid-cycle would release the part. The reverse/check valve maintains downstream pressure on supply interruption, while the 40 um element keeps water and debris out of the clamp cylinders.
Size 400 with a G1/2 port suits lines plumbed at 1/2 inch; step up or down a size if your flow demand sits at the edge of the curve. Choose the low-pressure type (this code, L) when the circuit runs at reduced pressures - the exact regulation range for the low-pressure type is not published, so confirm it with us. The manual drain (M) means an operator opens the bowl drain periodically; pick automatic or differential-pressure draining if the unit is mounted where regular access is awkward. The 40 um element is the standard grade; specify W for 5 um where finer particle removal is needed. This code carries the embedded square gauge scaled in psi (F2), no mounting bracket (J), and a fitted reverse/check valve (K) that holds downstream pressure on supply loss. G (BSPP) thread is the option ordered here; PT is the standard and NPT is also available. Flow 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, not as a single rated figure, so we do not quote a rated flow, Cv or l/min number for this unit. Contact us with your application details and we will confirm the datasheet and flow-curve figures so you can check the GFR400 size and its G1/2 port against your demand before ordering.
The M in the code specifies a manual drain: collected water is released by opening the bowl drain during routine checks, which suits units mounted where an operator passes regularly. The K code means a reverse/check valve is fitted, so downstream pressure is held if the upstream air supply is interrupted - useful for clamping or holding circuits.
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.