The AirTAC GFR300C15LC1WT AirTAC Filter Regulator NPT1/2 Low-Pressure 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 GFR300C15LC1WT is a size 300 filter regulator: water and particulate filtration plus pressure regulation combined in one body, with a 1/2 in NPT port. This configuration carries the W-grade 5 um filter element for finer particle removal than the standard 40 um element, a differential-pressure drain that bleeds accumulated condensate automatically as flow passes through, and a fitted round pressure gauge scaled in MPa. It is the low-pressure type, intended for circuits that must be regulated below the range of a standard unit; the exact adjustment range for the low-pressure type is not published, so we confirm it from the datasheet on request. 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. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, standard or low-pressure regulation, square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures against your application before ordering.
| Model | GFR300C15LC1WT AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| 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 clean, regulated air to the cylinders and grippers on a cartoning or wrapping line, where the 5 um element protects directional valves from fine particles and the gauge lets operators set and monitor line pressure at a glance.
Regulating a gentle, controlled pressure for hold-down or clamping fixtures that must not crush delicate workpieces, with the low-pressure type regulator covering settings below what a standard unit is intended for.
Conditioning shop air for bench-mounted test rigs and pilot-operated instrumentation, where finer 5 um filtration, a visible MPa gauge and automatic condensate removal via the differential-pressure drain keep the setup stable through the day.
Size 300 with a 1/2 in NPT port suits lines where the 1/4 in and 3/8 in steps are too small; step up to size 400 or 600, or down to 200, as your flow demand dictates - we confirm sizing from the published flow curves on request. The 5 um W-grade element is the right choice when downstream valves and cylinders need finer protection than the 40 um standard; note it is a replaceable choice, not an upgrade you can turn on and off. The differential-pressure drain is the default and works well on steadily flowing lines; choose automatic drain for idle lines that still collect water, or manual drain where an operator checks the bowl routinely. This unit is fitted with a round external gauge on the MPa scale; square embedded gauges and psi or bar scales are the other catalogue options. NPT is the thread on this code; PT and G (BSPP) are order options. A mounting bracket is included. Regulation on this code is the low-pressure type - confirm the exact adjustment range with us 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 GFR series as curves, not as a single rated number, so we do not quote a rated flow, Cv or SCFM figure. Send us your application details and we will confirm the flow and full datasheet figures for this size 300, 1/2 in port unit on request before you order.
The W in the code GFR300C15LC1WT specifies the 5 um filter element instead of the 40 um standard, giving finer protection for downstream equipment. The drain is the differential-pressure type, the catalogue default: it discharges collected condensate automatically as air flows through, with no operator action needed. If your line sits idle for long periods, ask us about the automatic-drain variant 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.