The AirTAC GFR300C15JC3WTK 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 GFR300C15JC3WTK is an AirTAC GFR300 filter regulator: a single body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is a size 300 unit with a 1/2 in NPT port, 5 um filtration (the W grade, finer than the 40 um standard element), a differential-pressure drain, and a fitted reverse/check valve that holds downstream pressure if upstream supply drops. It ships as coded with an external round gauge on a bar scale and no mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjustment range for this drain type is 0.15-0.9 MPa (20-130 psi), and the working temperature range is -5 to 70 C (non-freezing). The size 300 bowl is polycarbonate.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type, filter grade, gauge style and scale, thread form (PT standard, G and NPT as order options), bracket and check valve. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300C15JC3WTK 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, regulated air to a machining center's pneumatic tool-clamp and chip-blow-off circuits, where the 5 um element protects the spindle-drawbar cylinder and the check valve holds clamp pressure during a supply dip.
Supplying the flap-fold and taping cylinders of a carton-sealing machine, where a stable regulated pressure keeps case closure consistent across shifts and the differential-pressure drain sheds condensate without operator attention.
Conditioning shop air for a lab's pneumatic sample-prep bench, where the 5 um grade and steady regulated pressure suit air-operated valves and small actuators that are sensitive to water carryover and pressure drift.
Choose the GFR300 step when your line's required flow and the 1/2 in port size match the machine's air demand; smaller 200 and larger 400/600 frames change both port and flow capacity, and we can confirm the flow curves against your consumption before you order. This unit carries the 5 um element (code W); the 40 um standard grade suits general shop-air protection, while 5 um suits valves, cylinders and instruments that need cleaner air. The differential-pressure drain bleeds condensate automatically whenever the pressure drop across the element is high enough, with no timer or operator action; automatic-drain and manual-drain variants exist if you prefer them. The fitted check valve (code K) prevents downstream backflow and holds set pressure during an upstream dip.
Other decodable choices: the round gauge here reads in bar, while square embedded gauges and MPa/psi scales are available in the family; thread is NPT on this unit, with PT as the catalogue standard and G (BSPP) orderable; and a mounting bracket can be specified on variants where this J-coded unit omits one. Because flow is published as curves and not a single rating, 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 GFR300 as curves rather than a single rated figure, so we do not quote one number here. Send us your application details - required flow, working pressure and downstream equipment - and we will confirm the datasheet and check the sizing with you before you order.
K means a reverse/check valve is fitted: air flows downstream normally, but backflow is blocked and the set pressure is held if the upstream supply drops. The C3 code specifies the external round gauge fitted on this unit, reading in bar; embedded square gauges and MPa or psi scales are available as options in the GFR family.
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.