The AirTAC GR30015LF1T AirTAC Air 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 GR30015LF1T is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from your compressed-air supply, and it carries no filter, no bowl and no lubricator. This unit is the 300 size with a 1/2 in NPT port, built as the low-pressure type with an adjustment range up to 0.4 MPa, and it comes with the embedded square gauge scaled in MPa. The trailing T in the code specifies the NPT thread option; PT is the standard thread and G (BSPP) is also a catalogue option. Maximum inlet pressure is 1.0 MPa (145 psi), and the GR series handles a wider temperature span than the rest of the G family: -20 to 70 C.
This is a genuine AirTAC part. The GR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in standard and low-pressure types, with gauge and thread options to match your panel. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GR30015LF1T AirTAC Air 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, MPa 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. |
| 1 | Gauge scale: MPa. 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 |
A lab bench running air-operated valves, cylinders or small test rigs at a gentle setpoint. The low-pressure type keeps the downstream circuit below 0.4 MPa, and the MPa gauge gives the operator a direct read on the set pressure.
A paint or coating booth where atomising air and air-driven equipment need a steady, moderate pressure rather than full line pressure. The regulator holds the setpoint at the booth, and the 1/2 in port suits a main branch feed to the spray area.
A cartoning or wrapping machine whose cylinders and actuators run at a reduced pressure set once at the machine's air inlet. The embedded square gauge lets the maintenance team verify the setting, and the included bracket or panel mounting tidies the install.
Pick the GR size by the port and flow step you need: 200 for 1/8-1/4 in lines, 300 for 3/8-1/2 in, 400 for 1/2-3/4 in and 600 for 1 in. This GR30015LF1T is the 300 size at 1/2 in NPT. Choose the low-pressure L type (up to 0.4 MPa) only when your setpoint sits below that ceiling; the standard GR covers 0.05-0.9 MPa. The square MPa gauge is fitted here; psi or bar scales and an external round gauge are the other catalogue choices. Thread is NPT on this code, with PT standard and G available. A 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 number, so we do not quote a flow figure here. Send us your line size and demand and we will confirm the fit against 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 figure, so we do not state a flow number. Tell us your line size and air demand and we will confirm the sizing against the datasheet on request before you order.
L is the low-pressure regulator type, adjustable up to 0.4 MPa instead of the standard GR range; F is the embedded square gauge and 1 is the MPa scale; T specifies the NPT thread (PT is the standard, G is also available). Choose L only when your setpoint stays below 0.4 MPa; otherwise the standard type covers 0.05-0.9 MPa.
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.