The AirTAC GR30015JC3TK 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 - 0.9 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 GR30015JC3TK is an AirTAC GR300 air pressure regulator, a genuine AirTAC part built to do one job: hold a steady, adjustable downstream pressure from a compressed-air supply. This 300-size unit carries a 1/2 in NPT port and is the standard (not low-pressure) type, with an adjustment range of 0.05-0.9 MPa (7-130 psi) and a maximum inlet pressure of 1.0 MPa (145 psi). The code K confirms a reverse (check) valve is fitted, so downstream pressure is held if the upstream supply drops. A round external gauge on the bar scale is included so the set pressure can be read directly at the unit, and the J code means no mounting bracket is supplied - the GR body can also be panel-mounted.
The GR family is available in sizes 200, 300, 400 and 600 with port sizes stepping up from 1/8 in to 1 in, so the same regulator logic scales with your line. Thread options are PT as standard with G (BSPP) and NPT as orderable variants, and a low-pressure type (L) limited to 0.4 MPa exists where the application calls for it. Because the catalogue publishes flow only as curves rather than a single rated figure, we confirm the flow and datasheet figures for your application on request.
| Model | GR30015JC3TK AirTAC Air Pressure Regulator NPT1/2 |
|---|---|
| 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, 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. |
|---|---|
| 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. |
| 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 · 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 |
On a workholding fixture or pneumatic press line, the GR30015JC3TK holds the clamping pressure steady at the setpoint while the check valve keeps the circuit from bleeding down if the main supply dips mid-cycle.
Packaging machines run cylinders and actuators all day at one set pressure. This 300-size regulator with a 1/2 in port and bar-scale round gauge lets the line operator set and read the supply pressure right at the machine.
At a plant air drop feeding an assembly cell, the regulator steps the header pressure down to the level the cell's tools and cylinders need, with the fitted check valve protecting the cell from upstream pressure loss.
Start with the port step: this unit is 300 size with a 1/2 in NPT port, and the GR family steps through 200/300/400/600 with ports from 1/8 in to 1 in - pick the size whose flow curve covers your demand rather than oversizing on guesswork. The adjustment range here is 0.05-0.9 MPa (7-130 psi); if your setpoint never exceeds 0.4 MPa, the low-pressure L type is an alternative worth asking about. Gauge choices are the embedded square gauge or an external round gauge, with MPa, psi or bar scales - this configuration carries the round gauge on bar. Thread is PT as standard; G (BSPP) and NPT are orderable variants, and this unit is specified in NPT. A J code means no bracket is fitted, though the GR is also panel-mountable, and K confirms the reverse/check valve. One honest note before you order: flow is published as curves, not a single rating, so ask us to confirm sizing against your application.
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 flow for the GR series as curves, not as a single rated figure, so there is no one flow number we can honestly quote for this 300-size, 1/2 in NPT regulator. Tell us your application and we will confirm the flow from the datasheet on request before you order.
The C in the code means an external round gauge is fitted, and the 3 sets its scale to bar (MPa and psi scales are the alternatives). The K confirms a reverse/check valve is fitted, which holds downstream pressure if the upstream supply is lost. The J code means no mounting bracket is supplied, though the GR body is also panel-mountable.
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.