AirTAC GFC400-15 Combination Unit (GFC40015NK)
The AirTAC AirTAC GFC400-15 Combination Unit (GFC40015NK) is a genuine G-series two-unit air-preparation set: a filter regulator that filters and regulates in one body, coupled to a lubricator. Two bodies do the work of three, with PT1/2" ports, a 40 µm element, a differential-pressure drain and regulation over 0.15 - 0.9 MPa (20 - 130 psi).
- TypeTwo-unit set (F.R. + L.)
- Port sizePT1/2"
- Regulating range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- DrainDifferential-pressure drain
- Bowl materialPC
- Pressure gaugeNot fitted
- ThreadPT
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the AirTAC GFC400-15 Combination Unit (GFC40015NK)
The GFC40015NK is AirTAC's G-series two-unit air preparation set for 1/2 in PT threaded lines, combining a filter-regulator and a lubricator so one assembly filters, regulates and lubricates compressed air. The K code adds a reverse (check) valve, which holds downstream pressure if the upstream supply drops. This version uses the standard 40 um filter element, a differential-pressure drain, and carries no gauge (N code).
This is a genuine AirTAC part in the 400 size of the G series, which also spans 200, 300 and 600 sizes with ports from 1/8 to 1 in. Options include automatic or manual drains, a 5 um element (W code), gauge variants, and G (BSPP) or NPT threads. We confirm flow and datasheet figures on request.
AirTAC GFC400-15 Combination Unit (GFC40015NK) Technical Specifications
| Model | AirTAC GFC400-15 Combination Unit (GFC40015NK) |
|---|---|
| Series | GFC400 two-unit set |
| Composition | Filter regulator + lubricator (2 units) |
| Port size | PT1/2" (PT thread) |
| Filtering grade | 40 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 | Not fitted |
| 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 set has no separate bracket code — the two 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.
Model Code: AirTAC GFC400-15 Combination Unit (GFC40015NK)
| GFC400 | G-series two-unit set, 400 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". 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. |
| N | No pressure gauge (N). |
| (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. |
| 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 set. Constituent units, orderable separately as spares: GFR400-15 filter regulator and GL400-15 lubricator.
Size Class & How It Differs From GC
- GFC200PT1/8" - PT1/4"
- GFC300PT1/4" - PT1/2"
- GFC400PT3/8" - PT1/2"
- GFC600PT3/4" - PT1"
A GFC is two units because filtering and regulating share one body. A GC is three separate units — filter, regulator and lubricator. Both filter, regulate and lubricate; the GFC is the shorter assembly, the GC keeps the filter and regulator serviceable as separate bodies.
| This model | GFC400 · PT1/2" · 40 µm |
|---|---|
| One size down | GFC300 |
| One size up | GFC600 |
| Three-unit equivalent | GC400-15 |
| Build order | Filter regulator first, lubricator last |
Where the AirTAC GFC400-15 Combination Unit (GFC40015NK) Is Used
Clamp fixtures on a welding fixture line
Supplies regulated, lubricated air to pneumatic clamp cylinders on a weld fixture, with the check valve helping hold the clamped position if the main supply dips mid-cycle.
Palletizer grip circuit
Prepares air for the vacuum and clamp grippers of a palletizing cell, filtering plant air, holding a stable set pressure and feeding a light oil mist to the directional valves.
Press-side air manifold
Conditions the branch feeding solenoid valves and air cylinders on a stamping press's secondary operations, keeping water and scale out of the valve stack.
Is the AirTAC GFC400-15 Combination Unit (GFC40015NK) the Right Set?
Size the unit by stepping between 200, 300, 400 and 600 to match port and air demand; the 400 size carries the 1/2 in PT port shown here. Pick the drain type: differential-pressure (this model), automatic (A) or manual (M). The 40 um element covers general plant air; the W variant gives 5 um filtration. Keep the K code if you want the check valve to hold the regulated downstream pressure during supply dips, and choose a gauge variant in place of the N no-gauge code if you need a reading. Threads come as PT (standard), G (BSPP) or NPT. Flow is published as curves, not a single rating, so ask us to confirm sizing before ordering.
Quick checklist
- ✓ Body size for your peak flow (PT1/2" here)
- ✓ Element 40 µm or 5 µm
- ✓ Drain sets the regulating band
- ✓ Gauge fitted, shape and scale
- ✓ Two-unit (GFC) or three-unit (GC) layout
- ✓ Oil mist acceptable downstream
Installation & Maintenance Notes
- check Install with the airflow arrow: filter regulator first, lubricator last.
- check Mount vertically, bowls down.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Adjust only within 0.15 - 0.9 MPa (20 - 130 psi).
- check Drain condensate before the bowl fills; check the oil level.
- check Keep the set above freezing (-5 to +70 °C, unfreeze).
The PC bowls must not be cleaned with solvents — wipe them with a dry cloth. The lubricator adds an oil mist downstream, so if any branch must stay oil-free, take that branch off before the lubricator or use a GFR400-15 filter regulator on its own.
AirTAC GFC400-15 Combination Unit (GFC40015NK) FAQ
AirTAC publishes flow for this series as performance curves rather than a single rated figure, so no number is quoted here. Tell us your inlet pressure and required air consumption and we will confirm the flow from the datasheet on request.
The K code means a reverse (check) valve is fitted, so air flows out to the line but is held from flowing back if the upstream supply fails or dips. The base GFC40015N without the K does not include this valve.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC Air-Preparation Units
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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.