The AirTAC GR30015JC1TK AirTAC GR300 Air Regulator NPT1/2, Round Gauge 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 PT1/2" 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 GR30015JC1TK is an AirTAC GR300 series air pressure regulator for compressed air, built around one job only: holding a stable downstream pressure from an upstream supply that varies. This configuration decodes to a 1/2 in NPT port, the standard (non low-pressure) regulator type with an adjustment range of 0.05-0.9 MPa (7-130 psi), a round pressure gauge with an MPa scale, a reverse/check valve fitted, and no mounting bracket. As a GR-series unit it contains no filter and no bowl, so it does not remove water or particulate and does not lubricate - it regulates pressure, and it does so across a working temperature span of -20 to 70 C, wider than the rest of the G family.
This is a genuine AirTAC part. The GR series is offered in sizes 200, 300, 400 and 600 with matching port sizes, and each can be ordered with or without a bracket, with an embedded square gauge or an external round gauge (MPa, psi or bar scale), with a reverse/check valve, or as a low-pressure type limited to 0.4 MPa. Rated flow is published as curves rather than a single figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GR30015JC1TK AirTAC GR300 Air Regulator NPT1/2, Round Gauge |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/2" (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. |
|---|---|
| 15 | Port size PT1/2". 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 · PT1/2" · 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 a fixed working pressure to a bank of air cylinders on a press or clamping fixture, so clamping force stays consistent from stroke to stroke even as the compressor loading cycles. The fitted check valve holds the setting if upstream pressure drops.
Drop a machine tool's pneumatic circuit - tool clamping, chip doors, air-blast nozzles - from the shop main to a controlled pressure at the machine, with the round MPa gauge giving the operator a direct readout at the drop.
Regulate the supply to diverters, gates and gripper cylinders on a packaging or conveyor line so actuation timing and seating force stay repeatable across shifts, with the 1/2 in NPT port matching the line's drop piping.
Size and port are the first real choice: this unit is size 300 with a 1/2 in port, and the GR series steps through 200, 300, 400 and 600, so pick the step whose published flow curve covers your line's air demand with margin - tell us the demand and we will confirm the sizing against the datasheet before you order. The adjustment range here is the standard 0.05-0.9 MPa (7-130 psi); if your setpoint must sit at or below 0.4 MPa, the low-pressure (L) variant of the same family is the correct alternative. This unit ships configured with a round external gauge on the MPa scale; psi and bar scales are catalogue options if your panel reads differently.
Other decodable choices: the trailing T makes the thread NPT (PT is the standard thread and G/BSPP is also a catalogue option - order the one that matches your piping, since these are specifications, not delivery terms). The K code means a reverse/check valve is fitted, which holds the downstream setting if upstream pressure is lost; delete the K if you do not want it. The J code means no mounting bracket is supplied - GR units are also panel-mountable, and a bracket can be specified on other variants.
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 will not quote you a made-up figure in l/min, SCFM or Cv. Send us your line's air demand and operating pressure and we will confirm the flow curve and sizing for this 1/2 in, size 300 unit against the datasheet before you order.
J = no mounting bracket supplied (GR units are also panel-mountable). C = an external round pressure gauge is fitted rather than the embedded square gauge. 1 = the gauge scale is MPa (psi and bar scales are catalogue options). T = NPT thread; PT is the standard thread and G/BSPP is also available to order. K = a reverse/check valve is fitted, which holds the downstream setting if upstream pressure is lost.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.