Airtac GFR Filter Regulator GFR300C15NK
The AirTAC Airtac GFR Filter Regulator GFR300C15NK 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.
- TypeFilter regulator
- 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 GFR Filter Regulator GFR300C15NK
The GFR300C15NK is an AirTAC filter regulator: filtration and pressure regulation in one body with a drain bowl, and no lubricator. This version is the 300 size with a 1/2 in PT port, the standard differential-pressure drain, the standard 40 um element, and a reverse (check) valve fitted - the K in the code - which blocks reverse flow through the unit. It is supplied without a pressure gauge. Output is adjustable from 0.15 to 0.9 MPa (20-130 psi) with a maximum inlet of 1.0 MPa (145 psi); the medium is compressed air only.
This is a genuine AirTAC part rated -5 to 70 C (non-freezing), with a polycarbonate (PC) bowl at the 300 size and a mounting bracket included. The same G-series family is offered in 200, 300, 400 and 600 sizes with manual or automatic drains, a 5 um element, gauge options and G (BSPP) or NPT threads as catalogue choices. Because flow appears only as curves in the datasheet, we confirm figures on request.
Airtac GFR Filter Regulator GFR300C15NK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C15NK |
|---|---|
| Series | GFR300 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.
Model Code: Airtac GFR Filter Regulator GFR300C15NK
| GFR300 | G-series filter regulator, 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) | 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.
Size Class
- GFR200PT1/8" - PT1/4"
- GFR300PT1/4" - PT1/2"
- GFR400PT3/8" - PT1/2"
- GFR600PT3/4" - PT1"
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 | GFR300 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Where the Airtac GFR Filter Regulator GFR300C15NK Is Used
Pneumatic clamp and press station on an automotive assembly line
Feeds clamp cylinders and a light pneumatic press at a trim-fit station, with the check valve preventing downstream air from pushing back through the unit if the upstream supply is shut off mid-cycle.
Case-erecting and sealing machinery in packaging
Supplies the cylinders that open, square and flap-fold corrugated cases, giving the packager one filtered, regulated feed point and a non-return path in the air line.
Actuated valve panels at a water treatment plant
Conditions pilot air for quarter-turn actuator panels on treatment duties, where the check valve keeps downstream line pressure from backing up through the regulator.
Is the Airtac GFR Filter Regulator GFR300C15NK the Right Unit?
Take the 200/300/400/600 step that matches your port and demand; this 300 unit carries a 1/2 in PT port. Pick this code over the plain GFR300C15N when you want the built-in check valve, which stops downstream air from pushing back through the unit when the upstream supply is removed. Drain is the differential-pressure default, with the 0.15-0.9 MPa (20-130 psi) regulating range, and the standard element is 40 um. No gauge is fitted; an external round gauge is a catalogue option. PT is the standard thread, with G and NPT available in the family. Flow is published as curves, not a single rating, so ask us to confirm sizing before you order.
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
- ✓ Thread PT, G (BSPP) or NPT
- ✓ Oil needed downstream? Use GFC instead
Installation & Maintenance Notes
- check Mount vertically, bowl down, following the airflow arrow.
- check One body does the filtering and the regulating — no separate regulator needed.
- 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 Keep the unit above freezing (-5 to +70 °C, unfreeze).
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 GFR Filter Regulator GFR300C15NK FAQ
There is no single rated flow figure to quote: AirTAC publishes flow for the GFR300 series as curves. Share your inlet pressure, port size and air demand and we will confirm the relevant flow data from the datasheet on request before you order.
K indicates that a reverse (check) valve is fitted, so air can pass one way through the unit and reverse flow is blocked. The same unit without the K, GFR300C15N, has no check valve. Everything else in this code - 300 size, 1/2 in PT port, differential-pressure drain, 40 um element, no gauge - is identical.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac GFR Filter Regulator GFR300C15NK
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.