The AirTAC GFR300C15MNWT AirTAC Filter Regulator NPT 1/2 in 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.
The GFR300C15MNWT is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built for a 1/2 in NPT port, carries the 5 um filter element (code W), uses a manually drained metal bowl, and is ordered without a gauge (code N); a mounting bracket is included. The standard-type regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), and the unit is rated for a maximum inlet pressure of 1.0 MPa (145 psi) at -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is made in 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, and with choices of drain type, filter grade (40 um standard or 5 um), gauge and scale, thread (PT standard; G and NPT to order) and bracket. Because flow is published as curves rather than a single rating, we confirm the datasheet and sizing figures on request.
| Model | GFR300C15MNWT AirTAC Filter Regulator NPT 1/2 in |
|---|---|
| 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.
| 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.
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) |
Point-of-use filtration and pressure regulation for a CNC cell's pneumatic clamps, tool-changer cylinders and air-powered drawbar, where clean air at a correctly set pressure keeps the cell working as programmed.
Supplying filtered, regulated air to case erectors, carton sealers and bagging machines on a packaging line, where stable air pressure is what the cylinder-driven sealing and forming stations rely on.
Clean, regulated air for air-operated ball and butterfly valves on a water-treatment or chemical dosing skid, with the 5 um element helping keep pilot solenoids free of debris and the manual drain suited to supervised duty.
Size drives port and flow: the GFR family steps through 200, 300, 400 and 600, with larger sizes taking larger ports and moving more air; this unit is size 300 with a 1/2 in NPT port. Drain type is a real choice: manual (this model) needs periodic operator draining, automatic drains condensate on its own, and the differential-pressure default drains on a pressure drop. Filter grade is 40 um standard or 5 um with the W code - this unit carries the 5 um element for finer protection of downstream equipment. Gauges are optional: an embedded square gauge or an external round gauge with MPa, psi or bar scales; this model is ordered without a gauge (code N). Thread is PT as standard, with G (BSPP) and NPT as order options - this unit is NPT. A mounting bracket is included. Flow is published as curves rather than a single rating, so ask us to confirm sizing against your application before ordering.
Quick checklist
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 publishes flow for the GFR series as curves rather than a single rated figure, so no rated flow number is quoted here. The 300 size with a 1/2 in port is the larger mid-range step in the family, and we will confirm the datasheet curve and check the sizing against your application on request.
The N in GFR300C15MNWT means the unit is ordered without a gauge. Other GFR300 variants carry an embedded square gauge or an external round gauge with MPa, psi or bar scales - tell us which scale you need and we will identify the right code for you.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
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.