The AirTAC GR30015LF2T AirTAC Pressure Regulator NPT1/2 Low-Pressure is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.4 MPa (7 - 58 psi) with PT1/2" ports, and ships with a pressure gauge. A regulator does not filter the air — put a GF filter upstream, or use a GFR filter regulator, when water and particulate must also be removed.
The AirTAC GR30015LF2T is a pure air pressure regulator: it controls downstream pressure only, with no filter, no bowl and no lubrication in the body. This 300-size unit is fitted with a 1/2 in NPT port and is the low-pressure type, meaning its adjustment range tops out at 0.4 MPa - the right choice for circuits that must never see full line pressure. A square pressure gauge scaled in psi is fitted as standard so the setpoint can be read directly, and the maximum working (inlet) pressure is 1.0 MPa (145 psi). Operating temperature is -20 to 70 C, wider than the rest of the G-series range.
This is a genuine AirTAC part. The GR line is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in standard or low-pressure types, with embedded square or optional external round gauges scaled in MPa, psi or bar, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the figures against your application before ordering.
| Model | GR30015LF2T AirTAC Pressure Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/2" (NPT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure type |
| Bracket | Fixing bracket included |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — square, psi scale |
| Reflux valve | Not fitted |
| Mounting | Panel mounting; optional fixing bracket |
Specifications follow the official AirTAC G-series air-preparation data. Note the GR temperature range is -20 to +70 °C, wider than the other G-series units. A regulator has no bowl and no filter element, so there is no filtering grade. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GR300 | G-series pressure regulator, 300 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| L | Low-pressure type — 0.05 - 0.4 MPa (7 - 58 psi). Blank is standard, L is the low-pressure type. |
| (blank) | Fixing 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. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, type, bracket, gauge, gauge shape, scale, thread, reflux — a blank position takes the default. Example: GR300-08LNK is a 300 body, PT1/4", low-pressure type, no gauge, with 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 rather than from a single rated figure.
| This model | GR300 · PT1/2" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Packaging machines often use pneumatic clamps and hold-downs that must grip gently and never see full line pressure. This low-pressure GR regulates the supply branch to those actuators, with the psi gauge letting the setter read and lock the setpoint at the machine.
In an automotive or furniture finishing booth, spray guns and air-assisted applicators run on a controlled, moderate air supply. This regulator sits on the drop to the gun station, holding a steady reduced pressure so the finish stays consistent from the first panel to the last.
Air knives and blow-off nozzles that dry bottles or clear dust before labelling need a stable, moderate supply rather than raw header pressure. This regulator on the branch keeps the jet pressure where the process was set up, and the included bracket lets it mount at the point of use.
Start with the port and size: this unit is size 300 with a 1/2 in NPT port - step up to 400 or 600 if your line needs more flow capacity, or down to 200 if the circuit is small. The decisive choice here is regulator type: this is the low-pressure (L) version, adjustable up to 0.4 MPa; if your process needs settings above that, choose a standard GR instead. The square gauge fitted here reads in psi; MPa and bar scales are also available. Thread is NPT on this code - PT is the standard and G is the other order option. A mounting bracket is included, and GR is also panel-mountable.
One honest note on sizing: AirTAC publishes GR flow as curves, not as a single rated figure, so we do not quote a flow number here. Send us your application details and we will confirm the right size from the datasheet before you order.
Quick checklist
Without a reflux valve, air cannot flow back through the regulator — order the K option if reverse flow is required. A regulator does not remove water or particulate; that is the filter's job.
AirTAC publishes GR-series flow as curves in the catalogue, not as a single rated number, so we do not state a flow figure here. Tell us your line pressure, set pressure and the equipment you are supplying, and we will confirm the sizing from the datasheet on request before you order.
The L in the code marks the low-pressure type: its adjustment range tops out at 0.4 MPa, instead of the wider range of a standard GR. Choose this version when the downstream circuit must be limited to moderate pressures - for example delicate clamping, spraying or blow-off duties. If your process needs settings above 0.4 MPa, order a standard GR300 in the same size and port 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.