The AirTAC GR30010JNTK AirTAC Air Pressure Regulator NPT 3/8 in 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 PT3/8" 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 GR30010JNTK is an AirTAC GR-series air pressure regulator: its single job is to hold a stable, adjustable downstream pressure from your compressed-air supply. This 300-size unit is configured with a 3/8 in NPT port, a standard regulation range of 0.05-0.9 MPa (7-130 psi), and a built-in reverse (check) valve that lets downstream air be retained when the upstream supply is removed. No gauge is fitted in this configuration, so add your own downstream pressure indicator if you need to read the set point. Maximum inlet pressure is 1.0 MPa (145 psi), and the unit operates from -20 to 70 C - a wider temperature window than the rest of the G family.
This is a genuine AirTAC part from the GR300 series. The GR line spans 200, 300, 400 and 600 sizes with port options from 1/8 in to 1 in, and choices for thread type (PT standard, G or NPT), gauge, low-pressure type, bracket and reverse valve. Flow is published by AirTAC 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 | GR30010JNTK AirTAC Air Pressure Regulator NPT 3/8 in |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT3/8" (NPT thread) |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Standard 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 | Fitted (reverse flow permitted) |
| 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| 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. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT3/8" · 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 a stable, reduced pressure to a bench or C-frame pneumatic press so the forming or staking stroke runs at a consistent set point instead of full line pressure.
Feed carton sealers, case erectors or wrap-arm actuators from a regulated branch so cylinder speeds stay repeatable across the whole shift.
Regulate the supply to pick-and-place grippers and clamps on a robotic cell, with the check valve holding the downstream circuit when the upstream supply is shut off.
Pick the GR size by the port and flow step your line needs: 200, 300, 400 or 600, with ports stepping from 1/8 in up to 1 in. For this code the choices are already fixed: 300 size, 3/8 in NPT port, standard 0.05-0.9 MPa (7-130 psi) regulation range, reverse valve fitted, no gauge and no bracket (the GR body is also panel-mountable). If you would rather have a factory-fitted gauge, a low-pressure type rated to 0.4 MPa, a G (BSPP) or PT thread, or a bracket, those are catalogue options on other codes in the same series - tell us the variant and we will decode it. Because AirTAC publishes regulator flow only as curves, not a single rated number, send us your flow and pressure requirements and we will confirm sizing against the datasheet before you order.
Quick checklist
The reflux valve lets air flow back through the regulator, which is useful when downstream volume must vent quickly. 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 one number here. Tell us your inlet pressure, set pressure and required flow, and we will confirm the datasheet curve for this 300-size unit against your application before you order.
N means no pressure gauge is fitted, so you supply your own downstream gauge if you want to read the set point. K means a reverse (check) valve is built in, which retains downstream pressure when upstream supply is removed. Other GR codes offer a gauge (square embedded or external round, with MPa, psi or bar scales) or no check valve.
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.