Airtac GC FRL Unit GC300C15NK
The AirTAC GC FRL Unit GC300C15NK 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 See datasheet ports, a 40 µm element, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi).
- TypeF.R.L. combination (3 units)
- 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 GC FRL Unit GC300C15NK
GC300C15NK is an AirTAC G-series three-unit F.R.L. combination - separate filter, regulator and lubricator - fitted with the K reverse/check valve. At size 300 with a 1/2 in. PT port, it filters to 40 um, regulates downstream pressure over 0.15-0.9 MPa (20-130 psi) with its differential-pressure drain, oils the air stream, and the check valve prevents backflow toward the supply side. The N code means no gauge is fitted; the bowls are polycarbonate for -5 to 70 C service.
This is a genuine AirTAC part. The GC series runs from sizes 200 to 600, with 5 um filtering (W), automatic or manual drains, gauges in MPa, psi or bar scales, G (BSPP) or NPT threads, and bracket mounting available. Maximum inlet pressure is 1.0 MPa (145 psi). Flow for the series is published as curves, not a single rating - ask us and we will confirm the datasheet figures for your line before you order.
Airtac GC FRL Unit GC300C15NK Technical Specifications
| Model | Airtac GC FRL Unit GC300C15NK |
|---|---|
| Series | GC300 F.R.L. combination |
| Composition | Filter + regulator + lubricator (3 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 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.
Model Code: Airtac GC FRL Unit GC300C15NK
| GC300 | G-series F.R.L. combination, 300 body — sets the port range. |
|---|---|
| C1 | 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. Constituent units, orderable separately as spares: GF300-C1 filter, GR300-C1 regulator and GL300-C1 lubricator.
Size Class & How It Differs From GFC
- GC200PT1/8" - PT1/4"
- GC300PT1/4" - PT1/2"
- GC400PT3/8" - PT1/2"
- GC600PT3/4" - PT1"
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 | GC300 · See datasheet · 40 µm |
|---|---|
| One size down | GC200 |
| One size up | GC400 |
| Two-unit equivalent | GFC300-C1 |
| Build order | Filter → regulator → lubricator |
Where the Airtac GC FRL Unit GC300C15NK Is Used
Machining-line clamp fixtures
On a machining-line clamping fixture, the fitted reverse/check valve holds downstream pressure if the shop air supply dips, keeping the part securely clamped until the cycle finishes.
Small pneumatic press
Keeps a small pneumatic press under steady regulated pressure, with the check valve blocking backflow on exhaust and the lubricator conditioning the ram cylinder over long production runs.
Quarter-turn valve actuation
Runs quarter-turn pneumatic actuators on a plant floor: 40 um filtration ahead of the regulator, a stable setpoint backed by the K check valve through supply dips, and oil mist for the actuator seals.
Is the Airtac GC FRL Unit GC300C15NK the Right Station?
This size 300 set has a 1/2 in. PT port; move to 400 or 600 for larger ports and more flow, or to 200 for tighter panels. The K code adds a reverse/check valve, useful when downstream pressure must not be lost to a supply dip - otherwise the drain is the differential-pressure default, with automatic (A) or manual (M) available to order. Filter grade is 40 um standard, 5 um with W. No gauge is fitted (N); round or square gauges in MPa, psi or bar scales can be specified. PT is the standard thread, with G (BSPP) and NPT as catalogue options. AirTAC publishes flow as curves, not a single rating, so let us confirm sizing against your flow and pressure requirements 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
- ✓ Three-unit (GC) or two-unit (GFC) layout
- ✓ Oil mist acceptable downstream
Installation & Maintenance Notes
- check Install with the airflow arrow: filter 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 station 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 of the regulator. If any branch of the line must stay oil-free, take that branch off before the lubricator, or use a GR300-C1 regulator with a GF300-C1 filter on that branch.
Airtac GC FRL Unit GC300C15NK FAQ
AirTAC publishes flow for the GC series as curves rather than one rated number, so we do not state a figure here. Give us your flow and working pressure and we will confirm the sizing from the datasheet curves before you order.
K means a reverse/check valve is fitted. It blocks backflow from the downstream side toward the supply, so regulated pressure is held if the upstream air dips or is shut off - useful for clamps, chucks and holding circuits.
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