The AirTAC GR30015LJNT AirTAC Air Pressure Regulator NPT 1/2 in 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, ordered without a 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 GR30015LJNT is an AirTAC GR-series air pressure regulator: it does one job, holding downstream pressure steady, and it carries no filter, no bowl and no lubricator. This unit is the low-pressure type (code L), so its regulation range tops out at 0.4 MPa - the right choice when the actuator or process downstream must never see full line pressure. It is built in the 300 size with 1/2 in NPT ports, tolerates a maximum inlet pressure of 1.0 MPa (145 psi), and works across -20 to 70 C, a wider temperature window than the rest of the G family. The J and N codes mean no mounting bracket and no gauge are fitted; as a GR unit it is also panel-mountable, and a gauge can be specified separately if you want a local pressure readout.
This is a genuine AirTAC part. The GR family spans four sizes (200, 300, 400 and 600) with matching port sizes, and can be ordered with a bracket, a gauge, a reverse/check valve, standard or low-pressure regulation, and PT, G or NPT threads. Flow figures are published as curves rather than a single rating, so send us your application details and we will confirm the sizing and datasheet figures on request.
| Model | GR30015LJNT AirTAC Air Pressure Regulator NPT 1/2 in |
|---|---|
| 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 | Not fitted |
| 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. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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 |
Baggers, carton sealers and wrapper stations often run gripper and clamp cylinders at a deliberately low supply pressure so product is held, not crushed. This low-pressure GR regulator set downstream of the main line keeps that circuit at a gentle, repeatable setting.
Pneumatically actuated process valves and positioners on plant floors need a clean, stable pilot pressure well below line pressure. A dedicated low-pressure regulator at each valve station prevents upstream swings from shifting the valve's response.
Roller loading, web tension and lay-on air cylinders on textile, paper and film converting lines are tuned by adjusting air pressure at each station. A local low-pressure regulator lets operators dial in each station independently without touching the main header.
Start with the port: this 300-size unit carries 1/2 in threads, and the GR family steps through 200, 400 and 600 sizes with larger or smaller ports as your air demand grows - match the size step to the flow your line needs. This code is the low-pressure type, limited to 0.4 MPa outlet; if your process needs the full 0.05-0.9 MPa range, order the standard GR version instead. Thread is NPT here; PT is the catalogue standard and G is also available. You can add a gauge (square embedded or external round, with MPa, psi or bar scale), a reverse/check valve, and a mounting bracket as options.
One honest note before you order: AirTAC publishes regulator flow as curves, not a single rated figure, so we do not quote a number here. Tell us your line pressure, set pressure and approximate air demand, and we will confirm the right size against the datasheet before you buy.
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 we do not quote a number here. Send us your line pressure, set pressure and air demand, and we will confirm the flow and full datasheet figures for this exact model on request.
The L in the code marks the low-pressure type, whose regulation range tops out at 0.4 MPa - useful where downstream equipment must not see full line pressure. If you need the standard 0.05-0.9 MPa range, order the same GR300-15 size without the L code, in your choice of PT, G or NPT thread.
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Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.