The AirTAC GFR300C15JNWT 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 GFR300C15JNWT is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady, in one body. This configuration is built around a 1/2 in NPT port and a 5 um filter element (the finer W option against the 40 um standard), with a differential-pressure drain, the default drain option for this family. The regulator is the standard type with an adjustment range of 0.15-0.9 MPa (20-130 psi); maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature is -5 to 70 C, non-freezing. No gauge is fitted and no mounting bracket is included, and the 300-size bowl is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with ports from 1/8 to 1 in, PT (standard), G and NPT threads, 40 um or 5 um filtration, differential-pressure, automatic or manual drains, gauge options and bracket choices. Flow is published as curves rather than a single rated figure, so contact us and we will confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C15JNWT 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) |
At point-of-use drops feeding impact wrenches, pneumatic clamps and air cylinders, this unit cleans water and particles out of the supply and holds a steady regulated pressure so each station behaves the same shift after shift.
Tool changers, clamping fixtures and chip-clearing jets on a machining cell all depend on clean, stable air. The 5 um element protects the finer valves in these circuits, and the regulator keeps actuator pressure where the fixture design calls for it.
Carton sealers, case erecters and diverters on a packaging conveyor run on compressed-air cylinders. This unit removes condensate and particulate before they reach the seals and valves, and regulates the supply so flap-fold and taping strokes stay consistent.
Choosing within GFR comes down to a few decodable decisions. Size 300 with a 1/2 in NPT port is the mid-to-upper step of the range, but the right size is set by required flow, not the port alone - sizes 200 to 600 step up in both port and capacity. Filter grade here is 5 um (code W) against the 40 um standard; choose 5 um where downstream valves, cylinders or instruments need finer protection. The drain is differential-pressure, the family default, with automatic (A) and manual (M) available where the duty calls for them. This unit carries no gauge and no bracket; gauges (round or square, in MPa, psi or bar scales) and brackets are orderable options. The thread is NPT; PT is the standard thread and G is also a catalogue option.
Flow for GFR units is published as curves, not as a single rated number, so send us your demand figures 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 this family as performance curves rather than a single rated figure, so we do not quote a rated flow number. Send us your air demand and operating pressure and we will confirm the sizing from the datasheet on request.
The standard GFR filter grade is 40 um; the W code on this model selects the 5 um option, which gives finer protection for downstream valves, cylinders and instruments. If your application tolerates coarser filtration, the 40 um version is available in the same size and port.
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.