The AirTAC AirTAC GR30015JF2K Air Regulator PT1/2, psi 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 AirTAC GR300 is a dedicated air pressure regulator: it does one job, holding a stable downstream pressure from a compressed-air supply, and it contains no filter, no water bowl and no lubricator. This GR30015JF2K is the 300 size with a PT1/2 (1/2 in) PT-threaded port, the standard regulation type with an adjustment range of 0.05-0.9 MPa (7-130 psi), and a built-in reverse/check valve (code K) that holds the set pressure if the upstream supply drops. It leaves the factory without a mounting bracket (code J), so it is intended for inline piping or panel mounting, which the GR body supports. The embedded square pressure gauge is fitted and reads in psi; an external round gauge in MPa, psi or bar scale is available as an option.
This is a genuine AirTAC part for compressed air only, rated to a maximum inlet pressure of 1.0 MPa (145 psi) and a working temperature of -20 to 70 C, wider than the rest of the G-series family. The GR line spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options for thread type (PT standard, G and NPT to order), gauge scale, check valve and bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | AirTAC GR30015JF2K Air Regulator PT1/2, psi gauge |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/2" (PT 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 — square, psi 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | PT 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 |
A weld fixture's air-actuated clamps need one steady set pressure regardless of swings in the shop supply. The GR30015JF2K regulates the branch feeding the clamp valves, and its check valve holds the clamp setting if the main line sags mid-cycle.
Stopper cylinders and pusher actuators along a packaging conveyor run best at a fixed, moderate pressure below the main header. This regulator sets that branch pressure once, with the square psi gauge letting operators read the set point at a glance.
A CNC tool-changer and its air-blast circuits take feed air from the machine's pneumatic panel at a controlled pressure. The GR30015JF2K's PT1/2 port matches the panel supply line, and panel mounting suits the cabinet-mounted installation.
Step through the real, decodable choices. First, size and port: the 300 body with a PT1/2 port sits mid-range in the GR line (200/300/400/600, ports 1/8 to 1 inch), and the right step depends on the flow your circuit needs - since flow is published as curves, not a single rating, tell us your demand and we will confirm the correct size against the datasheet. Second, gauge: this unit carries the embedded square gauge in psi scale (code F2); MPa or bar scales and an external round gauge are alternatives. Third, the K code fits a reverse/check valve - choose it where a falling upstream pressure must not bleed down your set point, leave it off otherwise. Fourth, thread: PT is the standard here; G (BSPP) and NPT are orderable options, a specification choice, not a delivery matter. Finally, bracket: J means no bracket is supplied, suiting inline or panel mounting. Ask us to confirm sizing against your application before ordering.
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 curves, not as a single rated number, so we do not state a flow figure here. Send us your line size, supply pressure and the flow your application needs, and we will confirm from the GR300 datasheet whether this 300 size with its PT1/2 port is the right step before you order.
J means no mounting bracket is supplied - the unit is meant for inline piping or the panel mounting the GR body supports. F2 means the embedded square pressure gauge is fitted with a psi scale (MPa and bar scales, plus an external round gauge, are options). K means a reverse/check valve is built in, which holds your set pressure if the upstream supply drops.
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.