Airtac GFC Combination Unit GFC300C08NK
The AirTAC GFC Combination Unit GFC300C08NK 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 See datasheet 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 sizeSee datasheet
- Regulating range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- DrainDifferential-pressure drain
- Bowl materialPC
- Pressure gaugeFitted
- 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 GFC Combination Unit GFC300C08NK
The AirTAC GFC series is a two-unit air preparation set: a filter-regulator and a lubricator mounted together as one assembly. GFC300C08NK is the 300 size with PT1/4 ports, the standard 40 um filter element, a differential-pressure drain, no gauge, and a reverse (check) valve fitted - the K in the code - so reverse flow through the set is blocked. It removes water and particulate, holds the downstream pressure you set - adjustable from 0.15 to 0.9 MPa (20 to 130 psi) on this differential-drain version - and meters oil mist to the equipment behind it. Max inlet pressure is 1.0 MPa (145 psi), temperature range is -5 to 70 C, and the 300-size bowls are PC (polycarbonate).
This is a genuine AirTAC part. The G series spans 200, 300, 400 and 600 sizes with ports from 1/8 in. to 1 in., and drain type, filter grade, gauge, reverse-valve and G/NPT thread variants are catalogue choices. AirTAC publishes flow for these units as curves rather than a single rated figure, so ask us and we will confirm the flow and datasheet figures before you order.
Airtac GFC Combination Unit GFC300C08NK Technical Specifications
| Model | Airtac GFC Combination Unit GFC300C08NK |
|---|---|
| Series | GFC300 two-unit set |
| Composition | Filter regulator + lubricator (2 units) |
| Port size | See datasheet (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 | 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). 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 GFC Combination Unit GFC300C08NK
| GFC300 | G-series two-unit set, 300 body — sets the port range. |
|---|---|
| C0 | Port size See datasheet. This body offers 08 = PT1/4", 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). |
| (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, gauge, shape, scale, grade, thread, reflux — there is no bracket position on a combination set. Constituent units, orderable separately as spares: GFR300-C0 filter regulator and GL300-C0 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 | GFC300 · See datasheet · 40 µm |
|---|---|
| One size down | GFC200 |
| One size up | GFC400 |
| Three-unit equivalent | GC300-C0 |
| Build order | Filter regulator first, lubricator last |
Where the Airtac GFC Combination Unit GFC300C08NK Is Used
Clamping fixture circuit
Supplies filtered, regulated, lubricated air to a workholding clamping fixture: the check valve blocks reverse flow back through the set, helping the downstream circuit stay as set while the 40 um element keeps the fixture valves clean.
Robot welding cell gripper air
Conditions the air feeding gripper cylinders and weld-gun clamps in a robot welding cell, with the regulator holding a steady set pressure and the differential-pressure drain keeping condensate off the maintenance routine.
Equipment rebuild test bench
On a rebuild shop test bench, the set gives technicians clean, regulated, oil-misted air for cycling refurbished cylinders and valves, while the check valve keeps the bench circuit isolated from backflow.
Is the Airtac GFC Combination Unit GFC300C08NK the Right Set?
Size the set by port and flow: G series steps 200, 300, 400 and 600 cover ports from 1/8 in. to 1 in., and this 300 set carries PT1/4 as the standard thread, with G (BSPP) and NPT available to order. The 40 um element is the standard grade, with the W-coded 5 um option for finer prefiltration. The differential-pressure drain avoids a manual drain routine; automatic and manual drain variants exist. The K code adds a reverse (check) valve and N means no gauge; both choices are configurable across the family. Flow is published as curves, not a single rating - ask us to confirm sizing against your application before ordering.
Quick checklist
- ✓ Body size for your peak flow (See datasheet 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 GFR300-C0 filter regulator on its own.
Airtac GFC Combination Unit GFC300C08NK FAQ
No single rated flow figure is published for the G series; AirTAC gives flow as performance curves against pressure. Send us your flow requirement and we will confirm the curve data and datasheet figures for this 300-size, PT1/4 set on request before you order.
The K adds a fitted reverse (check) valve, which blocks reverse flow through the set; the non-K version has no check valve. Both share the same 300 size, PT1/4 ports, 40 um element, differential-pressure drain and no-gauge configuration.
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