The AirTAC GFR300C15C2WTK 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 GFR300C15C2WTK is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This size 300 unit is configured with a 1/2 in NPT port, a fine 5 um filter element, a differential-pressure drain that bleeds accumulated condensate automatically whenever the pressure drop across the element rises, an external round gauge reading in psi, and a built-in reverse (check) valve that holds downstream pressure when the upstream supply is lost. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), and the maximum inlet pressure is 1.0 MPa (145 psi). Operating temperature is -5 to 70 C, non-freezing, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and is ordered with your choice of drain type, 40 um or 5 um filtration, gauge style and scale, thread (PT standard, with G and NPT as catalogue options), and check valve. Rated flow for this family is published as curves rather than a single figure, so ask us and we will confirm the datasheet and flow data for your operating conditions on request.
| Model | GFR300C15C2WTK 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 filtered, pressure-regulated air to the tool-change clamps and pneumatic actuators on a CNC machining centre, where the 5 um element guards fine control valves and the check valve holds clamp pressure if the shop supply dips.
Conditioning the air feeding conveyor diverters, bag sealers and case-pack cylinders on a packaging line, keeping the operating pressure steady as multiple stations fire in sequence off the same 1/2 in drop.
Supplying clean, regulated air to the grippers and weld-gun clamping cylinders in a robotic welding cell, with the psi gauge giving operators a local setpoint reference at the cell drop.
Start with the port step: size 300 with a 1/2 in NPT port suits lines fed at that connection size, and the next size up or down changes both the port and the flow capacity, so match the size to the air demand of the circuit rather than oversizing on price. Choose the drain to match maintenance reality: differential-pressure (as fitted here) drains only when the element loads up, automatic drains on a cycle, and manual drain suits attended installations. Pick the element grade for the downstream equipment: 40 um is the standard general-purpose grade, while the 5 um grade fitted to this unit protects finer components such as precision valves, cylinders and pneumatic instrumentation. Then settle the gauge scale (MPa, psi or bar), the thread (PT is the standard, G and NPT are order options), and whether a bracket or check valve is needed. Because flow for this family is published as curves and not as a single rated number, send us your line pressure and air demand 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 family as performance curves rather than a single rated figure, so we do not quote one number. Tell us your inlet pressure, set pressure and air demand, and we will confirm the flow data from the datasheet for this exact configuration on request before you order.
The 5 um grade is the W option in the GFR code. The 40 um element is the standard general-purpose grade, while 5 um is chosen when downstream equipment such as precision valves, air cylinders or instrumentation needs finer particulate removal. This unit is factory-configured with the 5 um element; if your application suits the coarser standard grade, we can quote the equivalent 40 um variant.
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.