The AirTAC GFR300C15MF1WTK 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 AirTAC GFR300C15MF1WTK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body, so one component does both jobs in the air-prep position. This configuration is built around a 1/2 in NPT port on the GFR300 (size 300) frame. The fine 5 um filter element (the W grade, against the 40 um standard) suits lines that are sensitive to fine contamination, and the manual drain lets an operator bleed accumulated condensate from the PC bowl on a planned round rather than relying on an automatic mechanism. Downstream pressure is set across the standard regulator range of 0.05-0.9 MPa (7-130 psi) and read on the embedded square gauge with an MPa scale; an external round gauge is available as an option. A reverse/check valve is fitted, a mounting bracket is included, maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR filter-regulator family, published in sizes 200, 300, 400 and 600 with a choice of port sizes, PT/G/NPT threads, drain types, filter grades, gauge styles and scales, and low-pressure regulator variants. Flow is published as curves rather than a single rated figure, so if you need a flow or sizing number for this exact model, ask us and we will confirm it from the datasheet on request.
| Model | GFR300C15MF1WTK 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) |
Feeding filtered, regulated air to the tool-change clamps and pneumatic actuators on a CNC machining centre, where the 5 um element protects fine spool valves and the check valve holds the clamp circuit if shop supply drops.
Conditioning the air feeding carton-forming and case-sealing cylinders on a packaging line, with the regulator set once at the manifold and the manual drain bled during the shift-change round.
Supplying the gripper and lift cylinders on a robotic palletiser, where a single 1/2 in filter regulator at the manifold inlet keeps water and fine dust out of the valve island downstream.
Start with the port and size: GFR300 is the size-300 frame with a 1/2 in NPT port here, and the sensible check is that the port step matches the air consumption of the machine or line it feeds - if the demand sits near the top of what a 1/2 in line carries, step up a size rather than throttling. This unit carries the 5 um element (code W); choose it where fine particulate matters, or order the 40 um standard grade where general protection is enough. Drain is manual on this model - right for attended installations - while automatic and differential-pressure drains are the choice where nobody is regularly at the unit. The embedded square gauge reads in MPa; psi and bar scales and an external round gauge are options. PT is the standard thread, with G (BSPP) and NPT as catalogue options - this model is ordered in NPT. A bracket is included; the reverse/check valve (code K) holds downstream pressure if upstream supply is lost.
One honest note before you order: AirTAC publishes flow for this family as curves, not as a single rated number, so we will not quote you a rated flow figure. Send us your application's air demand and we will confirm the sizing against the datasheet curves on request.
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 family as performance curves, not as a single rated figure, so we do not state a rated flow number. Tell us your application's air demand and line pressure and we will confirm the sizing for this 1/2 in, size-300 unit against the datasheet curves on request.
The M in the code specifies a manual drain: condensate collected in the PC bowl is released by an operator, which suits attended installations on regular maintenance rounds. Where the unit is remote or unattended, order the automatic (A) or differential-pressure (blank) drain variant of the same GFR300 filter regulator instead.
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.