The AirTAC GC400-10 AirTAC F.R.L. Combination Unit, PT3/8 is a genuine G-series three-unit F.R.L. combination: a separate filter, a separate regulator and a separate lubricator assembled as one air-preparation station. It has PT3/8" ports, a 5 µm element, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi).
The GC400-10 is a three-piece AirTAC F.R.L. combination: a separate air filter, a pressure regulator and an oil-mist lubricator assembled as one conditioning stack for a compressed-air line. This configuration is the 400 size with a PT3/8 port, fitted with a 5 um filter element (the finer of the two catalogue grades), a differential-pressure drain on the filter bowl, a standard regulator with an external round gauge scaled in psi, and a reverse/check valve on the regulator. The bowls are polycarbonate, and the unit carries a mounting bracket. Together the three stages remove water and particulate, hold a set downstream pressure, and deliver a fine oil mist to downstream air tools and cylinders.
This is a genuine AirTAC part in the GC series, which spans the 200, 300, 400 and 600 sizes with port sizes from 1/8" to 1" and options including automatic or manual drains, a 40 um standard element, square embedded or round external gauges in MPa, psi or bar scales, and G or NPT threads in place of the PT standard. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GC400-10 AirTAC F.R.L. Combination Unit, PT3/8 |
|---|---|
| Series | GC400 F.R.L. combination |
| Composition | Filter + regulator + lubricator (3 units) |
| Port size | PT3/8" (PT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 — round, 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). The combination has no separate bracket code — the three units couple together with their own mounting hardware. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GC400 | G-series F.R.L. combination, 400 body — sets the port range. |
|---|---|
| 10 | Port size PT3/8". 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) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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, gauge, shape, scale, grade, thread, reflux — there is no bracket position on a combination. Constituent units, orderable separately as spares: GF400-10 filter, GR400-10 regulator and GL400-10 lubricator.
A GC is three separate units, so the filter and the regulator can each be serviced or replaced on their own. A GFC is the two-unit set, where filtering and regulating share one body — shorter, but the two functions come as one part. Both filter, regulate and lubricate.
| This model | GC400 · PT3/8" · 5 µm |
|---|---|
| One size down | GC300 |
| One size up | GC600 |
| Two-unit equivalent | GFC400-10 |
| Build order | Filter → regulator → lubricator |
Feeding filtered, regulated and lubricated air to the tool-change cylinders, clamping fixtures and pneumatic actuators on a CNC machining centre, where the 5 um element protects precision valves from particulate and the lubricator keeps cylinders sealing well.
Conditioning the air supply for a carton-forming and case-packing conveyor line, where the regulator holds a steady pressure for consistent sealing-jaw and pusher cylinders and the check valve prevents backflow through the set.
Serving a pneumatic assembly-station drop in a manufacturing plant, giving operators one point where water and dirt are removed, working pressure is set and read locally in psi, and air tools receive oil mist through the 3/8" line.
Sizing starts with the port and size step: the 400 size with a 3/8" PT port sits in the middle of the GC range, so step up to 600 or down to 300 depending on the flow your line needs - we will confirm the flow curves against your demand before you order. This unit already carries the finer 5 um element (code W); choose 40 um if your application does not need fine filtration. The differential-pressure drain (the default) flushes the bowl as pressure differential builds; specify automatic (A) or manual (M) drain if your maintenance routine suits those better. The regulator adjusts over 0.15-0.9 MPa (20-130 psi); the round gauge here reads in psi, and square embedded gauges or MPa/bar scales are available. Thread is PT as standard, with G (BSPP) and NPT as order options; a reverse/check valve (K) is fitted on this unit, and the mounting bracket is included.
One honest note on sizing: AirTAC publishes flow as curves, not a single rated number, so we do not quote a rated flow figure. Send us your application details and we will confirm the datasheet curves and sizing before you order.
Quick checklist
The PC bowls must not be cleaned with solvents — wipe them with a dry cloth. The lubricator adds an oil mist downstream of the regulator. If any branch of the line must stay oil-free, take that branch off before the lubricator, or use a GR400-10 regulator with a GF400-10 filter on that branch.
AirTAC publishes flow for the GC series as curves, not as a single rated figure, so we do not state a rated flow number. Tell us your line pressure and air demand and we will confirm the datasheet flow curves and check the 400 size against your application before you order.
The code GC40010C2WK decodes W as the optional 5 um element (the finer grade; 40 um is standard) and K as a fitted reverse/check valve on the regulator, which prevents downstream backflow through the set. The drain is the default differential-pressure type, the gauge is the external round type scaled in psi, and the mounting bracket is included.
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.