The AirTAC GR30010C3TK AirTAC Air Pressure Regulator NPT3/8 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, 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 GR30010C3TK is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from a compressed-air supply, and it contains no filter, no bowl and no lubricator. This 300-size unit is fitted with a 3/8 in NPT port, an external round pressure gauge scaled in bar, a built-in reverse (check) valve that lets downstream air hold when the upstream supply is removed, and a mounting bracket is included; the body can also be panel-mounted. The standard-type regulator covers an adjustment range of 0.05-0.9 MPa (7-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi), and it operates from -20 to 70 C, a wider temperature window than the rest of the G family.
This is a genuine AirTAC part. The GR line is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in PT (standard), G and NPT threads, with a low-pressure type option (up to 0.4 MPa), gauge scales in MPa, psi or bar, and with or without a check valve or bracket. Flow for this series is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet and sizing figures for your application on request.
| Model | GR30010C3TK AirTAC Air Pressure Regulator NPT3/8 |
|---|---|
| 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 | 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 | 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. |
| (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. |
| 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 and hold the clamping pressure on a bench or C-frame pneumatic press independently of shop-air swings; the bar-scaled gauge lets the setter dial in the working pressure and the check valve holds the clamp circuit if the main supply drops.
Feed the cylinders and grippers on a carton or blister packaging line from a regulated branch, so each machine module sees a steady pressure; the 3/8 in NPT port suits the machine's existing air drops and the bracket simplifies mounting inside the cabinet frame.
Regulate the air to pusher and diverter cylinders on a sorting or conveyor line, keeping stroke behaviour consistent across shift changes; the -20 to 70 C operating window suits unheated dock and warehouse installations.
Start with the port and size step: the 300 size with a 3/8 in NPT port sits mid-range in the GR family (200/300/400/600), and the right step depends on the flow your line needs - because flow is published as curves, not a single rating, ask us to confirm the sizing against your application before ordering. Set the downstream pressure with the 0.05-0.9 MPa (7-130 psi) adjustment range; if your circuit runs below that, the low-pressure (L) type, rated up to 0.4 MPa, is the catalogue alternative. Choose the gauge scale you want to read - this unit carries a round external gauge in bar, with MPa and psi scales available as order options. Thread is NPT on this code; PT is the series standard and G (BSPP) can be ordered. The K code means a reverse/check valve is fitted - useful where downstream pressure must be held on air failure - and the bracket is included, with panel mounting also possible.
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 GR-series flow as curves, not as a single rated number, so we do not quote a l/min, m3/h or SCFM figure here. Tell us your application and we will confirm the flow-curve and datasheet figures for the 300 size at your supply pressure on request, before you order.
K means a reverse (check) valve is fitted. It lets downstream air be held when the upstream supply is shut off or lost, which is useful on clamping or holding circuits. GR units without the K code are plain regulators, and the check valve is a catalogue option you choose at ordering.
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.