The AirTAC GR30015LJF2T AirTAC Air Pressure Regulator NPT1/2 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 GR30015LJF2T is an AirTAC GR-series air pressure regulator: it does one job, holding downstream pressure steady, and it carries no filter element and no bowl. This unit is the 300 size with a 1/2 in NPT thread, built as the low-pressure type so its adjustment range tops out at 0.4 MPa - the right choice for circuits that must never see full line pressure. An embedded square gauge reading in psi is fitted so the set point is visible at a glance, and the J code means no mounting bracket is supplied; the GR body is also panel-mountable.
This is a genuine AirTAC part. The GR family spans four sizes (200, 300, 400, 600) with rising port sizes and flow capacity as the number climbs, and options include PT, G or NPT threads, a low-pressure type, embedded square or external round gauges in MPa, psi or bar scales, a reverse/check valve, and bracket or no-bracket mounting. Because flow is published as curves rather than a single rating, we confirm the datasheet and sizing figures for your application on request.
| Model | GR30015LJF2T AirTAC Air Pressure Regulator NPT1/2 |
|---|---|
| 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 | Supplied without bracket |
| 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. |
| J | Supplied without bracket. |
| (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 |
Set a stable, reduced pressure to spray guns and atomising air lines on a finishing line, where the coating process calls for a controlled low-pressure air setting rather than full header pressure.
Feed the low-pressure branch of a robotic welding cell that runs pneumatic clamps and hold-downs, keeping the clamping force circuit at a gentle, repeatable setting below the main line pressure.
Regulate the hold-down and tensioning air on a carton sealing or shrink-wrap conveyor, where product handling needs a soft, steady pressure that a full-line setting would overwhelm.
Start with the port and size: this unit is 300 size at 1/2 in, one step up from 300-10 and one down from 400-15, so match it to the line size and the flow your circuit needs. The L code makes it a low-pressure regulator with adjustment up to 0.4 MPa - if your set point sits above that, choose the standard GR type instead. The fitted square gauge reads in psi; MPa and bar scales are catalogue alternatives. Thread is NPT here, with PT (standard) and G available to order, and the J code means no bracket is included. Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -20 to 70 C, wider than the rest of the G family.
One honest note on sizing: AirTAC publishes regulator flow as curves, not a single rated figure, so ask us to confirm the flow and datasheet numbers against your application 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 regulator flow as performance curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote. Tell us your inlet pressure, set point and expected consumption, and we will confirm the flow and datasheet figures for this exact model on request before you order.
The L code in GR30015LJF2T makes it the low-pressure GR variant, with an adjustment range topping out at 0.4 MPa - suited to circuits that must not see full line pressure. The fitted embedded square gauge reads in psi (scale 2); MPa and bar scales are available as catalogue alternatives, and an external round gauge is an option on GR units.
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.