The AirTAC GFR30015LJC1WTK AirTAC Filter Regulator NPT1/2 Low-Pressure is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/2" 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 GFR30015LJC1WTK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration carries NPT1/2 ports, a 5 um filter element (code W, against the 40 um standard), a differential-pressure drain, the low-pressure regulator type, a round external gauge scaled in MPa, and a reverse/check valve fitted. The J suffix means no mounting bracket is included. It handles compressed air at up to 1.0 MPa (145 psi) inlet and temperatures from -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, drain choices (differential-pressure, automatic or manual), 40 um or 5 um filtration, gauge scales in MPa, psi or bar, and PT, G or NPT threads; the bowl on size 300 is polycarbonate. Flow is published as curves rather than a single rating, so ask us to confirm sizing and the datasheet for this model on request.
| Model | GFR30015LJC1WTK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 — round, MPa scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 15 | Port size PT1/2". 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Filtered and regulated air for the capper and conveyor-stop cylinders on a bottling line, with the 5 um element keeping water and fine particulate out of the directional valves that cycle every bottle.
Supplying the low-pressure clamp circuit on a machining cell fixture, where the low-pressure regulator type holds the holding pressure the fixture was designed around and the check valve helps hold the setting between cycles.
Feeding a panel of pilot valves and positioners on a process skid, where the 5 um grade and a visible MPa gauge give the technician clean air and a local pressure reference at the branch take-off.
Pick the size by the port and flow step: size 300 sits in the mid range with this 1/2 inch NPT port; step down to 200 or up to 400/600 as your line's flow demand changes. The 5 um element (W) suits air feeding precision valves or instruments; the 40 um standard is fine for general actuation. This unit is the low-pressure regulator type (L) for circuits running below standard regulation ranges - the exact range for the L type is not published, so confirm it with us before ordering. The differential-pressure drain is the default; automatic (A) and manual (M) drains are decodable alternatives. Gauge scale here is MPa on a round external gauge (psi and bar scales exist), the thread can be ordered as PT standard or G/NPT, and the J code means you are ordering without a bracket. Flow is published as curves, not a single rating, so 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR300 series as curves rather than a single rated figure, so we do not quote a number here. Send us your application's flow and pressure requirements and we will confirm sizing and share the datasheet for this model on request.
GFR is the filter-regulator family and 300 is the size; 15 decodes to a 1/2 inch port; L is the low-pressure regulator type; J means no bracket; C1 is the round external gauge scaled in MPa; W is the 5 um filter element (40 um is the standard); T is the NPT thread (PT is the standard option, G is also available); and K means a reverse/check valve is fitted. The drain is the differential-pressure type, the default.
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.