The AirTAC GR30015C3TK 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 GR30015C3TK is an AirTAC GR-series air pressure regulator: it does one job, holding your downstream compressed-air pressure steady at the setting you dial in. This size-300 unit has a 1/2 in NPT port, a standard regulation range of 0.05-0.9 MPa (7-130 psi), and a maximum inlet pressure of 1.0 MPa (145 psi). It comes fitted with an external round gauge scaled in bar, and the K option adds a reverse (check) valve so downstream pressure cannot push back through the regulator. As a GR unit it contains no filter and no bowl - pair it with a GF filter upstream if your air needs cleaning.
This is a genuine AirTAC part. The GR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, thread options PT (standard), G (BSPP) and NPT, low-pressure variants, gauge choices and scale options, and an optional reverse valve. GR is the one G-series family rated down to -20 C as well as up to 70 C. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application.
| Model | GR30015C3TK 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 | 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. |
|---|---|
| 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. |
| (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 · 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 workshop press or clamping fixture fed from a shop air main, this 1/2 in regulator holds a steady clamping pressure at the cylinder, and the fitted check valve holds the setting against backflow when the upstream supply dips.
On a cartoning or case-sealing conveyor line, the GR30015C3TK regulates the air feeding the diverters, pushers and seal cylinders from a 1/2 in drop leg, with the bar-scale round gauge giving operators a clear local pressure readout.
At a machine-tool or assembly-cell drop leg on the factory floor, this regulator sets a stable, lower working pressure for the cell's air tools and cylinders, isolated from swings in the main header pressure.
Start with the port step: this unit is size 300 with a 1/2 in NPT port, so check it against your line size and the flow your actuators actually need - because GR flow is published as curves, not a single rating, send us your demand and we will confirm the sizing before you order. Set your working pressure inside the 0.05-0.9 MPa (7-130 psi) range; if you need to regulate below 0.4 MPa only, ask about the low-pressure L variant. The C3 code here means an external round gauge scaled in bar; square embedded gauges and MPa or psi scales are the other catalogue choices. The K code means a reverse (check) valve is fitted - leave it off if backflow is not a concern. Thread is NPT on this unit; PT is the standard and G (BSPP) is also orderable. A mounting bracket is included, and GR is also panel-mountable.
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 regulator flow as characteristic curves, not as a single rated number, so we do not quote a l/min, m3/h or SCFM figure. Tell us your port size and the flow your application needs and we will confirm the sizing against the datasheet curves before you order.
K means a reverse (check) valve is fitted, so downstream pressure cannot push back through the regulator. The C3 code means this unit carries an external round gauge scaled in bar; an embedded square gauge, and MPa or psi scales, are the other catalogue options. This unit is NPT-threaded; PT is the standard and G (BSPP) can be ordered.
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.