The AirTAC GR30015LNT 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, 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 GR30015LNT is an AirTAC GR-series air pressure regulator, and regulation is all it does: there is no filter, no bowl and no lubricator in this unit. This is the 300 size with a 1/2 in NPT port, built as the low-pressure type, so the outlet setting can be adjusted up to 0.4 MPa while the inlet tolerates a maximum working pressure of 1.0 MPa (145 psi). The trailing N in the code means no gauge is fitted, so downstream pressure is set against your own instrumentation unless you order a gauge variant. Operating temperature is -20 to 70 C, wider than the rest of the G family, which helps in colder plant air environments.
This is a genuine AirTAC part. The GR line spans 200, 300, 400 and 600 sizes with 1/8 in to 1 in ports, and each size can be ordered as the standard type (0.05-0.9 MPa range) or this low-pressure type, with or without a gauge, with a reverse/check valve, in PT, G or NPT thread, and panel-mounted if needed. Rated flow for the GR300 is published as a curve rather than a single figure, so ask us and we will confirm the datasheet numbers against your application before you order.
| Model | GR30015LNT 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 | Fixing bracket included |
| 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. |
| (blank) | Fixing bracket included. |
| 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 |
Welding fixtures often clamp sheet metal with actuators that must not crush thin stock. The GR30015LNT holds a low set pressure, up to 0.4 MPa, on the clamp line of the fixture so the cylinders grip without deforming the part.
On a bottling or canning conveyor, hold-down and stabiliser pads work best at low pressure so containers are guided, not squeezed. This regulator keeps that branch of the line set well below main header pressure.
Textile winding and take-up stations use light air pressure on thread guides and tension arms. The low-pressure GR30015LNT on the 1/2 in supply to the station lets operators set that delicate pressure independently of the mill's main air system.
Start with the port and size: the 300 body takes a 1/2 in port here, and the size step (200/300/400/600) is what moves you up in flow capacity, so size the regulator from the air demand of the circuit rather than the pipe alone. Then pick the type: this L variant is the low-pressure type, correct where the set point must stay at or below 0.4 MPa; for settings up to 0.9 MPa choose the standard GR. Decide on a gauge (fitted square gauge, or external round gauge with MPa, psi or bar scale) or run ungaugeed as this N-coded unit does. Thread is NPT here; PT is the catalogue standard and G is also orderable. A bracket is included, and the GR can also be panel-mounted.
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 flow and pressure requirements 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 performance curves rather than a single rated number, so we do not state a flow figure for this unit. Tell us your required flow and operating pressures and we will confirm the datasheet curve and check the sizing for your application on request.
L marks the low-pressure type: the outlet setting range tops out at 0.4 MPa instead of the standard type's 0.05-0.9 MPa. N means no pressure gauge is supplied with this unit. If you want a gauge, the GR300 is available with a fitted square gauge or an external round gauge in MPa, psi or bar scale.
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.