The AirTAC GFR300C15C2WT AirTAC Filter Regulator NPT1/2, 5 um 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 AirTAC GFR300C15C2WT is a 300-size filter regulator that removes water and particulate from compressed air and holds downstream pressure in one body. This configuration is tapped 1/2 in NPT, carries the fine 5 um filter element (code W), drains condensate automatically by differential pressure as the element loads up, and regulates with the standard-type unit across 0.15-0.9 MPa (20-130 psi). An external round gauge scaled in psi is fitted so line pressure can be read at a glance, the polycarbonate bowl suits the 300 size, a mounting bracket is included, and no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of 40 um standard or 5 um fine filtration, differential-pressure, automatic or manual drains, gauge style and scale options, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application before ordering.
| Model | GFR300C15C2WT AirTAC Filter Regulator NPT1/2, 5 um |
|---|---|
| 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) |
Feeding a bench or frame pneumatic press: the 5 um element keeps sludge and water out of the press cylinder valves while the regulator holds a steady working pressure so stroke force stays repeatable, with the psi gauge giving the operator a direct setting reference.
Conditioning air for conveyor diverters, sealers and clamp cylinders on a packaging line: clean, regulated air at a set pressure keeps timing consistent through a shift, and the differential-pressure drain sheds accumulated condensate without a manual blow-down routine.
Mounted on the air preparation panel of a CNC machine tool or automated cell: the 1/2 in NPT connection serves the whole machine circuit, the bracket fixes the unit to the backplate, and the 5 um grade protects solenoid valves and air bearings from fine contamination.
Start with the port and size: the 300 frame with a 1/2 in NPT connection suits lines where moderate-to-high air demand passes through a single treatment point, and stepping up to size 400 or 600 buys more flow capacity at the cost of panel space. Choose the drain to match attendance: differential-pressure (this unit) bleeds condensate whenever the pressure drop across the element demands it, automatic suits unattended installations, and manual suits periodically serviced points. Pick 5 um (this unit) where downstream valves, cylinders or instruments need finer air than the 40 um standard element provides.
Then settle the gauge scale (MPa, psi or bar - this unit is round, psi), the thread (PT is the standard; G and NPT such as this unit are catalogue options to order), and whether a bracket or reverse/check valve is wanted. Flow is published as curves, not a single rated figure, so send us your flow and pressure requirements and we will confirm the right size from 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 GFR flow as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your line pressure, set pressure and air demand, and we will confirm the sizing from the datasheet curves for your application before you order.
The W in the code specifies the optional 5 um fine filtration instead of the 40 um standard element, which suits downstream valves, cylinders and instruments that need cleaner air. This unit uses a differential-pressure drain: condensate is discharged automatically when the pressure drop across the loaded element reaches the discharge threshold, with no manual draining needed.
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.