The AirTAC GFR30015LF2WTK 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 GFR30015LF2WTK is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at your setpoint. This configuration is built for a 1/2 in NPT port, carries the fine 5 um filter element (code W) for cleaner air than the standard 40 um grade, and is the low-pressure (L) regulator type for circuits that run below standard working pressures. It ships with the embedded square gauge scaled in psi, a differential-pressure drain that clears collected condensate during normal operation, a reverse/check valve (K) to hold downstream pressure when the supply is lost, and a mounting bracket.
This is a genuine AirTAC part from the GFR range, which spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, gauge scale options, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application before you order.
| Model | GFR30015LF2WTK 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 — square, psi 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 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) |
Feeding clamping cylinders on a fabrication press: the 5 um element keeps grit out of cylinder seals and control valves, while the low-pressure regulator holds a gentle, repeatable clamp force and the check valve keeps the clamp from relaxing if plant air drops.
Conditioning air at a 1/2 in drop feeding carton sealers and case erectors on a packaging conveyor: water and fine particulate are stripped before the machine valves, downstream pressure is held steady for consistent actuator speed, and the psi gauge lets operators verify the setpoint at a glance.
Supplying pneumatic actuators on laboratory automation - plate handlers, valve manifolds, sample movers - where the 5 um grade protects sensitive instrument valves, the low-pressure type matches delicate actuation pressures, and the check valve preserves position during an air interruption.
Start with the port and size: this unit is size 300 with a 1/2 in NPT port, one step up from 3/8 in, so size your line by the flow your machine actually draws - we can check the published flow curves against your demand on request. The 5 um element (W) suits air tools, valves and instruments that need finer filtration than the 40 um standard; if your circuit tolerates coarser air, the standard grade costs less. Because this is the low-pressure (L) type, confirm your working band with us first - the exact regulation range for the low-pressure version is not published in the material we hold. The fitted square psi gauge reads your setpoint directly; MPa or bar scales and an external round gauge are alternatives in the range. The differential-pressure drain works automatically during operation; a manual-drain variant is available if your duty cycle would starve it, and an automatic drain is offered too. Thread is NPT here, with PT (standard) and G as order options; a bracket is included, and the fitted check valve holds downstream pressure on supply loss.
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 as curves, not as a single rated number, so we do not quote a figure that could mislead your sizing. Send us your application details - line pressure, downstream demand and duty cycle - and we will confirm the relevant datasheet flow figures for this exact configuration before you order.
The W marks the 5 um filter element instead of the standard 40 um grade, giving finer removal of water and particulate for sensitive downstream equipment. The K at the end of the code means a reverse/check valve is fitted, which holds downstream pressure if the upstream supply is interrupted. Both are order options on the GFR range; this unit carries them from the factory.
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.