The AirTAC GR30008NT AirTAC Air Pressure Regulator NPT1/4 is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.9 MPa (7 - 130 psi) with PT1/4" 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 GR30008NT is an AirTAC GR-series air pressure regulator for compressed air: it reduces and holds a stable downstream pressure and does nothing else - no filtration, no bowl, no lubrication. This 300-size unit is fitted with a 1/4 in NPT port, is the standard (non low-pressure) type, and carries no gauge (code N), so downstream pressure is read on your own instrumentation. A mounting bracket is included, and the GR body is also panel-mountable.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, optional G (BSPP) or NPT threads in place of the PT standard, optional round or square gauges with MPa, psi or bar scales, a low-pressure type (L) rated up to 0.4 MPa, and a reverse/check valve option (K). Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GR30008NT AirTAC Air Pressure Regulator NPT1/4 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/4" (NPT thread) |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Standard 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. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (blank) | Standard type — 0.05 - 0.9 MPa (7 - 130 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 · PT1/4" · 0.05 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
Set and hold the clamping pressure feeding an air-over-oil or direct-air press cylinder on a machining fixture, so the clamp force stays consistent across every cycle.
Regulate the supply to carton-forming and sealing cylinders on a packaging line, where a stable downstream pressure keeps stroke timing and sealing force repeatable.
Drop line pressure to the level required by a directional-valve manifold serving grippers or pick-and-place actuators on an automation cell, independent of the main header pressure.
Size and port are the primary choices: GR200 through GR600 step up both port size and flow capacity, so match the size to the air consumption of the circuit downstream - the 300 size with its 1/4 in port suits compact actuator and tool circuits. Decide whether you need a gauge (square embedded or external round, with MPa, psi or bar scale) - this N-suffix unit has none. Choose the thread: PT is the standard, with G (BSPP) and NPT available as order options; this unit is NPT. A bracket is included, and GR can also be panel-mounted. Flow is published as curves, not a single rating, so send us your application's air demand 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 GR regulator flow as performance curves rather than a single rated figure, so we do not quote a rated flow number. Send us your application's air demand and operating pressure and we will confirm the sizing from the datasheet on request before you order.
The N in GR30008NT means no gauge is fitted. GR regulators can be ordered with an embedded square gauge or an external round gauge, each available with an MPa, psi or bar scale. If you need a local pressure readout on this unit, contact us for the gauge-equipped variant of the GR300.
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.