The AirTAC GFR300C15C1WT AirTAC Filter Regulator NPT1/2 5um 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 GFR300C15C1WT is an AirTAC GFR300 filter regulator: one body that first removes water and particulate from compressed air, then regulates downstream pressure. This configuration is the 300 size with a 1/2 in NPT port, fitted with the finer 5 um filter element (the 40 um element is the standard alternative), a differential-pressure drain that bleeds condensate automatically when flow creates a pressure drop across the element, and an external round pressure gauge reading in MPa. The standard-type regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi) with this drain type, and maximum inlet pressure is 1.0 MPa (145 psi). Operating temperature is -5 to 70 C, non-freezing. The 300-size bowl is PC (polycarbonate), and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family is published in 200, 300, 400 and 600 sizes with port sizes from 1/8 in to 1 in, manual, automatic or differential-pressure drains, 40 um or 5 um elements, embedded square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the flow and datasheet figures for your application on request.
| Model | GFR300C15C1WT AirTAC Filter Regulator NPT1/2 5um |
|---|---|
| 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) |
Feed clean, regulated air to tool-changer clamps and pallet-locking cylinders on a machining center, where the 5 um element helps protect close-tolerance valve spools from particulate carryover.
Regulate supply pressure to stopper, pusher and lift cylinders along a carton packaging conveyor, holding a stable set point as line demand fluctuates through the shift.
Condition and set the air pressure feeding a light pneumatic press or clamping fixture in an assembly cell, with the MPa gauge giving operators a clear local reading at the drop.
Choose the size and port step (200, 300, 400, 600; 1/8 in to 1 in) against the flow your line needs, and match the thread to your piping: this unit is NPT, while PT and G are catalogue alternatives. Pick the filter grade for the duty: 40 um suits general plant air, while the 5 um element fitted here suits finer applications such as instrument air or coating work. Drain choice matters: differential-pressure (fitted here) drains with flow, automatic drains on condensate level, and manual drain suits low-moisture or periodically attended installations; note the manual-drain variant widens the regulation range down to 0.05 MPa. Gauge style and scale (embedded square or external round; MPa, psi or bar) and the bracket option complete the selection. Because flow is published as curves rather than a single rating, send us your application and we will confirm sizing against the datasheet before you order.
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 we do not quote a rated flow, Cv or SCFM number. Tell us your inlet pressure and required downstream flow and we will confirm the sizing from the datasheet on request before you order.
The W code in GFR300C15C1WT selects the optional 5 um filter element in place of the 40 um standard, giving finer particulate removal for applications such as instrument air, coating or sensitive valve circuits. The differential-pressure drain, round MPa gauge, NPT1/2 port and included bracket are the other decoded choices on this unit.
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.