The AirTAC GFR400C15AC2K 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 See datasheet ports, a differential-pressure 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 AirTAC GFR400C15AC2K is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This size 400 unit is threaded PT1/2 (1/2 in), carries a 40 um filter element, and has an automatic drain that ejects collected condensate without manual attention. The fitted round gauge reads in psi, and the built-in reverse/check valve holds the downstream setting if upstream supply is interrupted. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range is 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits the 400 size, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and is configurable by drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um optional), gauge style and scale (embedded square or external round; MPa, psi or bar), reverse/check valve, thread (PT standard, G and NPT as order options) and bracket. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application before you order.
| Model | GFR400C15AC2K AirTAC Filter Regulator PT1/2, Auto Drain |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard scale |
| Reflux valve | Not fitted |
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. |
|---|---|
| C1 | Port size See datasheet. This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure 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). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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. |
| (blank) | No reverse-flow valve (the default). |
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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Installed at the drop of a bottling plant air main, it filters water and debris from the supply and holds a steady regulated pressure to the gripper and pusher cylinders that place and pack bottles.
Mounted ahead of the diverter and stopper valves on a parcel-sorting conveyor, it conditions the shop air and keeps the actuation pressure stable so divert gates throw consistently through the shift.
Fitted on the air feed to power clamps on a CNC machining fixture, it strips condensate and particles from the supply and regulates the clamping pressure, with the check valve holding the setting if the main supply dips.
Start with the port step: size 400 with a PT1/2 connection sits in the middle of the GFR range, so step up to size 600 for larger lines or down to 300/200 for compact circuits - match the size to the flow your line needs. Choose the drain to suit attendance: automatic (this unit) suits unmanned or hard-to-reach installations, manual suits attended stations, and differential-pressure drain is the default. Filter grade is 40 um standard; specify the W code for 5 um where finer particulate removal matters. Gauge options are the embedded square gauge or an external round gauge (this unit: round, psi), with MPa, psi or bar scales. Thread is PT as standard, with G (BSPP) and NPT available as order options, and a mounting bracket is included.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated figure, so we do not quote a flow number here. Send us your application details and we will confirm the datasheet curve and sizing before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR family as curves rather than a single rated figure, so we do not quote a flow number here. Tell us your line pressure and the flow your application needs, and we will confirm the datasheet curve and check the sizing for you before you order.
The automatic drain ejects collected condensate from the bowl by itself, which suits unmanned compressors, remote drops or hard-to-reach installations. Manual drain is the better choice where the unit is easily accessible and an operator can bleed the bowl as part of a routine. Differential-pressure drain is the default code if you want drainage tied to flow conditions.
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.