The AirTAC GR40015LJNT AirTAC Low-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 GR40015LJNT is an AirTAC GR-series air pressure regulator: it does one job, holding a steady downstream air pressure from a compressed-air supply. This is the low-pressure type (code L), covering regulation up to 0.4 MPa, in size 400 with a 1/2 in NPT port (trailing T). The code N means no gauge is fitted, and J means no mounting bracket is included; the GR body can also be panel-mounted. There is no filter, bowl or drain in this unit - it is regulation only.
This is a genuine AirTAC part from the GR range, which spans sizes 200, 300, 400 and 600 with 1/8 in to 1 in ports, standard and low-pressure types, and optional gauges, brackets and reverse/check valves. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application before ordering.
| Model | GR40015LJNT AirTAC Low-Pressure Regulator NPT1/2 |
|---|---|
| Series | GR400 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.
| GR400 | G-series pressure regulator, 400 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 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 | GR400 · PT1/2" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR300 |
| One size up | GR600 |
| Line order | Filter first, then regulator, then lubricator |
Holds a steady, reduced air pressure to spray guns and atomising air lines in a finishing booth, where the process calls for setpoints at or below 0.4 MPa rather than full line pressure.
Regulates the air feeding blow-off and product-hold cylinders on a packaging conveyor, keeping delicate cartons and films from being disturbed by excessive line pressure.
Provides controlled low-pressure compressed air to bench-scale reactors, agitation air or pneumatic actuators on a pilot line, where the process requires a stable setpoint under 0.4 MPa.
Start with the port step: this unit is size 400 with a 1/2 in NPT port, so match it to your line size and the air demand of the equipment downstream. Because this is the L (low-pressure) type, it suits circuits that must be held at or below 0.4 MPa - if your setpoint needs to go higher, the standard GR type is the correct choice instead. Choose the thread to suit your piping: PT is the catalogue standard, while G (BSPP) and NPT (as on this model) are order options. Gauge (embedded square or external round, MPa/psi/bar scales) and bracket are selectable on the family; this code carries neither. Flow is published as curves, not a single rating, so send us your application details and we will confirm sizing 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 regulator flow as curves rather than a single rated figure, so we do not quote a number here. Tell us your setpoint, upstream pressure and the equipment you are supplying, and we will confirm the flow and sizing from the datasheet on request before you order.
L marks the low-pressure type: this regulator covers adjustment up to 0.4 MPa, unlike the standard GR type. The N in the code means no gauge is fitted and J means no bracket is included; gauges and brackets are available as options on the GR family if your installation needs them.
Genuine AirTAC parts produced by AirTAC factory.
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.