The AirTAC GFR40015MLJC3WTK AirTAC Filter Regulator NPT 1/2 in is a genuine G-series filter regulator: water separation, 5 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 GFR40015MLJC3WTK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built for 1/2 in NPT ports, carries a 5 um filter element (the finer of the two catalogue grades), drains by hand via its manual drain, and is the low-pressure regulator type. A round pressure gauge scaled in bar is fitted, and a reverse/check valve is included. The polycarbonate bowl lets you see condensate at a glance. Maximum 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 available in sizes 200, 300, 400 and 600 with a choice of ports, PT/G/NPT threads, manual, automatic or differential-pressure drains, 40 um or 5 um filtration, gauge styles and scales, and standard or low-pressure regulator types. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40015MLJC3WTK AirTAC Filter Regulator NPT 1/2 in |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 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 — round, 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.
| 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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 | GFR400 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
On a stamping or forming press with air-operated clamps and cylinders, this unit filters condensed water and fine particles out of the shop air line and holds a steady, low setpoint pressure to the actuators. The manual drain suits a press on a supervised shift where an operator bleeds the bowl as part of start-up.
On a beverage bottling line, air cylinders drive gate diverters, stop gates and pushers. This filter regulator cleans the supply and regulates it to the low pressure those actuators need, while the reverse/check valve helps hold the downstream circuit if the upstream supply dips.
In a laboratory automation or sample-handling rig running small air cylinders and air bearings, the 5 um element protects sensitive downstream components from particulates, and the low-pressure regulator type with a bar gauge gives a clearly readable, gentle setpoint for delicate motion.
The GFR400 is the larger mid-size step in the GFR range; moving up a size buys more flow capacity at the same port family, so size the unit against the air demand of the circuit rather than the port alone. This unit is already specified with the 5 um element (choose 40 um where only coarse protection is needed), a manual drain (simple and low-cost, but it must be drained on a routine; automatic or differential-pressure drains suit unattended installations), the low-pressure regulator type, a round bar gauge, and a reverse/check valve. No mounting bracket is included with this code. The thread here is NPT; PT is the standard for the series and G (BSPP) is also an order option. Flow for this family 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 family as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and working pressure and we will confirm the flow from the datasheet on request before you order.
The M in the code specifies a manual drain: you open it by hand to empty collected condensate, which suits attended installations on a routine. The GFR family is also available with an automatic drain or the default differential-pressure drain if you would rather not rely on manual bleeding.
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.