The AirTAC GR30015LC3T 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 GR30015LC3T is an AirTAC GR-series air pressure regulator: it does one job, holding downstream pressure steady as demand changes, and it carries no filter, bowl or lubricator. This unit is the 300 size with a 1/2 in NPT port, built as the low-pressure type, so its regulation range tops out at 0.4 MPa - the right choice for circuits that must never see high set pressures. It ships as a configuration with the external round gauge fitted on the bar scale and the mounting bracket included, and the GR body can also be panel-mounted. Max inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -20 to 70 C, wider than the rest of the G family.
This is a genuine AirTAC part. The GR line spans 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, in standard or low-pressure types, with gauge and scale options, G or NPT thread variants and bracket or no-bracket configurations. Flow for this regulator is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application before you order.
| Model | GR30015LC3T 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 | Fitted — round, bar scale |
| 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. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 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 |
Machining fixtures that clamp delicate or finished surfaces need a set pressure that stays low and steady. This low-pressure GR regulator holds the clamp circuit below its 0.4 MPa ceiling, and the bar-scale round gauge lets an operator read the setting at a glance.
Carton-forming and case-sealing stations fed by a 1/2 in NPT drop use this 300-size regulator to keep cylinder pressure consistent across a shift, so seal arms and pushers repeat their stroke behaviour regardless of compressor cycling upstream.
Bench-scale reactors, test rigs and pilot lines often run actuators at deliberately modest pressures. The low-pressure type with its bar gauge gives technicians a clearly readable, capped set point, and the -20 to 70 C range suits unheated lab spaces.
Start with the port step: the 300 size with a 1/2 in port suits lines whose tubing and valves are already at that size, and the next size up or down moves you along the flow curve rather than changing the function. Choose the low-pressure (L) type only when your set point sits within its up-to-0.4 MPa range; the standard GR covers 0.05-0.9 MPa. This unit carries the round gauge on the bar scale; square embedded gauges and MPa or psi scales are the other decodable options. Thread follows the trailing letter: PT is the standard, while G (BSPP) and NPT are catalogue options to order - this unit is the NPT variant. Bracket included here; a J code would omit it. Flow is published as curves, not a single rating, so send us your application 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 curves, not as a single rated figure, so there is no one number we can honestly quote. Tell us your inlet pressure, set pressure and expected air demand, and we will confirm the sizing against the datasheet curves on request before you order.
The L in GR30015LC3T marks the low-pressure type, whose regulation range tops out at 0.4 MPa instead of the standard 0.05-0.9 MPa - choose it when the circuit must never be set high. The C is the external round gauge and the 3 is its bar scale. The T is the NPT thread; PT is the standard and G (BSPP) is the other orderable option.
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.