The AirTAC GFR40015AF2K AirTAC Filter Regulator PT1/2, Auto Drain 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 automatic 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 GFR40015AF2K is an AirTAC GFR-series filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This size-400 unit is specified with PT1/2 (1/2 in) ports, a 40 um standard filter element, an automatic drain that expels collected condensate without manual attention, and an embedded square gauge reading in psi. The regulator adjusts outlet pressure across 0.15-0.9 MPa (20-130 psi), and the fitted check valve (code K) holds the downstream setting 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). The polycarbonate bowl suits this size; only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, thread choices of PT (standard), G (BSPP) or NPT, manual, automatic or differential-pressure drains, a 5 um element option (code W), gauge scale choices, and a low-pressure regulator type. Because AirTAC publishes flow performance as curves rather than a single rated figure, we confirm flow and datasheet figures for your application on request.
| Model | GFR40015AF2K AirTAC Filter Regulator PT1/2, Auto Drain |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (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 | Automatic 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. 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.
| 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". |
| A | Drain: Automatic 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). |
| 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. |
| (blank) | PT 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, regulated air to the tool-change and clamping circuits of a CNC machining centre, with the psi gauge letting setters verify clamp pressure at the machine and the automatic drain handling condensate from a long compressed-air run.
Prepares air for cylinders and grippers on a carton-sealing or wrapping conveyor, where the 40 um element protects valve spools from particulate and the check valve holds actuator settings through brief upstream pressure dips.
Serves as the point-of-use filter regulator at an assembly-cell air drop, giving each station its own 0.15-0.9 MPa set pressure independent of the header, with automatic drainage so the bowl stays clear across multi-shift operation.
Size and port step up together: 200/300/400/600 correspond to larger ports and higher flow capacity, so match the size to the air demand of the circuit rather than to the pipe alone. This unit is size 400 with PT1/2 ports. Drain choice matters in unattended plant: automatic (as here) suits continuous operation, manual suits periodic checks, and differential-pressure drain suits systems with steady pressure differential. The 40 um element is the standard grade; specify 5 um (code W) where finer particulate removal is needed. The square gauge here reads psi; MPa and bar scales are also available. Thread is PT as standard, with G (BSPP) and NPT as order options, and a mounting bracket is included. 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 performance for the GFR400 series as curves rather than a single rated figure, so there is no one rated-flow number we can honestly quote. Send us your application details and we will confirm the flow and datasheet figures for this exact configuration on request.
The A in the code specifies an automatic drain, which expels collected condensate from the bowl without operator attention - the right choice for unmanned or multi-shift equipment. Manual and differential-pressure drain versions of the same GFR400-15 body are available if your maintenance routine prefers scheduled draining.
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.