Airtac GFR Filter Regulator GFR300C15MNWK
The AirTAC Airtac GFR Filter Regulator GFR300C15MNWK 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 GFR300C15MNWK
The GFR300C15MNWK is an AirTAC filter regulator: water and particulate removal plus pressure regulation combined in one body with a drain bowl, and no lubricator stage. This configuration is the 300 size with a 1/2 in PT port, a manual drain, a fine 5 um filter element and a built-in check valve that blocks reverse flow through the unit. It is supplied without a pressure gauge. The regulated output is adjustable from 0.05 to 0.9 MPa (7-130 psi) and maximum inlet pressure is 1.0 MPa (145 psi), with compressed air as the only medium.
It is a genuine AirTAC part rated for -5 to 70 C (non-freezing). The 300-size bowl is polycarbonate (PC); aluminium alloy bowls are used on the 600 frame. A mounting bracket is included. AirTAC offers this G-series family in 200, 300, 400 and 600 sizes, with automatic or differential-pressure drains, 40 um or 5 um elements, gauge options, reverse valves and G (BSPP) or NPT threads as catalogue choices. Flow figures are published as curves, so we confirm them and the full datasheet on request.
Airtac GFR Filter Regulator GFR300C15MNWK Technical Specifications
| Model | Airtac GFR Filter Regulator GFR300C15MNWK |
|---|---|
| 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 GFR300C15MNWK
| 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 GFR300C15MNWK Is Used
Pneumatic clamping on CNC machining centres
Supplies 5 um filtered air at a set pressure to clamp cylinders and fixture valves on a machining centre, while the built-in check valve blocks reverse flow back through the unit and the manual drain is emptied at shift start.
Assembly-bench air tools and drivers
A 1/2 in PT drop above an assembly bench feeding nutrunners, impact drivers and small air cylinders, with the 5 um element helping keep scale and pipe debris out of the tool motors.
Pilot-air supply for actuated process valves
Conditions the pilot air feeding solenoid valves and positioners on actuated ball or butterfly valves, where clean, regulated air and a check valve against reverse flow are wanted.
Is the Airtac GFR Filter Regulator GFR300C15MNWK the Right Unit?
Step through the 200/300/400/600 frames to match your port size and air demand; this 300 unit carries a 1/2 in PT port. The manual drain suits installations where the bowl is emptied as part of a routine, and it widens the regulating range to start at 0.05 MPa. Choose the 5 um element over the standard 40 um when downstream valves and cylinders need finer protection. The trailing N means no gauge is fitted; an external round gauge is available as an option. PT is the standard thread, with G and NPT offered in the catalogue. Because flow is published as curves rather than 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
- ✓ 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 GFR300C15MNWK FAQ
AirTAC publishes flow for the GFR300 series as performance curves, not as one rated figure, so we do not quote a number here. Tell us your inlet pressure, port size and downstream demand and we will confirm the flow data from the datasheet on request.
The M in the code selects a manual drain: the bowl is drained by hand instead of by the differential-pressure action of the standard version. On this series the manual-drain version also carries the wider regulating range, 0.05-0.9 MPa (7-130 psi), compared with 0.15-0.9 MPa (20-130 psi) for the differential-pressure drain default.
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Genuine AirTAC parts produced by AirTAC factory.
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Covers non-human-caused product damage.
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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 GFR300C15MNWK
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.