The AirTAC GR30010JC1TK 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 GR30010JC1TK is an AirTAC GR300 air pressure regulator for compressed air, built around pressure regulation only - it contains no filter, no bowl and no lubricator. This 300-size unit is fitted with a 3/8 in NPT port, and the trailing T in the code specifies the NPT thread as ordered (PT is the standard version; G/BSPP is also a catalogue option). The standard-type regulator adjusts outlet pressure across 0.05-0.9 MPa (7-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi). Configuration decoded from the code: a round external pressure gauge on the MPa scale is fitted, a reverse/check valve is included to hold the downstream setting, and the J code means no mounting bracket is supplied - the GR body is also panel-mountable. Operating temperature is -20 to 70 C, wider than the rest of the G-series families.
This is a genuine AirTAC part. The GR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options include gauge scale (MPa, psi or bar), low-pressure type, reverse/check valve, bracket and thread form. Flow for the GR300 is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet and flow data for your application on request.
| Model | GR30010JC1TK 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 | Supplied without bracket |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — round, MPa 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 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 for the clamping cylinders on a machining centre so workpieces are held firmly without over-pressurising the fixture; the check valve holds the setting if supply pressure dips.
Feed a packaging line's sealing and folding cylinders from a dedicated regulated branch, keeping actuator pressure independent of the main header so settings survive machine-to-machine variation.
Regulate the air to sorting diverters, stoppers and pushers along a conveyor line, giving each station its own set pressure instead of running everything off raw header pressure.
Start with the size and port: 200, 300, 400 and 600 step up in port size and flow capacity, so match the 3/8 in NPT port here against your supply line and the air demand of the circuit - we can confirm sizing against the published flow curves before you order. Then set the options that matter: gauge scale (MPa, psi or bar - this unit ships with the round gauge on MPa), the reverse/check valve (fitted here, useful where downstream pressure must hold if upstream supply drops), thread form (PT standard, G or NPT to order), and bracket (omitted on this J-coded unit; the GR is also panel-mountable). If your circuit never exceeds 0.4 MPa, the L low-pressure type is the alternative to this standard unit.
One honest note on sizing: AirTAC publishes GR flow as curves, not as a single rated number, so we do not quote a flow figure here. Tell us your application and we will confirm the datasheet figures on request before you commit.
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 performance curves rather than a single rated figure, so we do not state a flow number, Cv or SCFM value for this regulator. Send us your application details and we will confirm the datasheet and flow curves for the GR300 on request, so you can size it against your actual air demand before ordering.
K is the reverse/check valve option: this GR30010JC1TK has a check valve fitted, so the regulated downstream pressure is held if the upstream supply is interrupted or drops. It is optional on the GR - units without the K code have no reverse valve - and it is a common choice on clamping and holding circuits where the set pressure must not decay.
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.