The AirTAC GR30015LJC2TK 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 AirTAC GR30015LJC2TK is a low-pressure air pressure regulator in the GR300 series, sized for a 1/2 in NPT port. As a low-pressure (L) type, its setting range is up to 0.4 MPa, making it the right choice for circuits that must run well below the standard regulator band. This configuration is fitted with an external round gauge scaled in psi, a reverse/check valve (K) that holds the downstream setting when upstream supply is lost, and no mounting bracket (J), so it is mounted by its 1/2 in port or panel-mounted, which the GR body supports.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in and PT, G or NPT threads, with standard or low-pressure regulation, gauge choices and an optional reverse valve. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and flow figures for your application on request.
| Model | GR30015LJC2TK 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 — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
| 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). |
| C | Gauge shape: Round. 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. |
| K | Reverse-flow (reflux) valve fitted. |
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 gentle, stable holding pressure for pneumatic clamps and fixtures on a CNC or assembly cell, where full line pressure would mark or crush the workpiece.
Regulate a downstream actuator or process valve circuit where the reverse/check valve keeps the set pressure in place if the upstream supply drops or is shut off.
Feed sealing jaws, bladder presses or delicate packaging actuators that call for a low, repeatable setting, read directly off the round psi gauge at the machine.
Size the GR by the port step and required flow: this unit is size 300 with a 1/2 in NPT port; step up to GR400/GR600 or down to GR200/GR300 smaller ports if the line differs. Choose the low-pressure (L) type only when the working setting stays at or below 0.4 MPa - the standard type covers the wider band. Pick the gauge scale you read on site: MPa, psi or bar, embedded square or external round. Order the thread you pipe in: PT is the catalogue standard, with G (BSPP) and NPT as order options. Decide on the reverse/check valve (K) if downstream pressure must hold during supply loss, and on the bracket if you want panel or surface mounting. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
Quick checklist
The reflux valve lets air flow back through the regulator, which is useful when downstream volume must vent quickly. A regulator does not remove water or particulate; that is the filter's job.
AirTAC publishes GR flow as curves, not as a single rated number, so we do not quote a figure here. Tell us your line pressure, setting and expected consumption and we will confirm the flow from the datasheet for this exact model on request.
The L in the code marks the low-pressure regulator type: its setting range tops out at 0.4 MPa instead of the standard GR band. Choose it for circuits that must run at low settings; for the full standard range, order the same size without the L code.
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.