The AirTAC GR40015F2G AirTAC Air Pressure Regulator G1/2 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 GR40015F2G is an AirTAC GR-series air pressure regulator, built purely for pressure regulation: it steps the downstream pressure of your compressed-air line down to the working level you set and holds it there as demand fluctuates. This 400-size unit is specified with a 1/2 in port in G (BSPP) thread, and the F2 code means an embedded square pressure gauge is fitted with a psi scale, so operators can read and dial in the setpoint directly at the unit. A mounting bracket is included, and as a GR regulator it can also be panel-mounted; there is no bowl, no filter and no drain on this family - regulation is its whole job.
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, and options include G or NPT thread in place of the PT standard, gauge scales in MPa, psi or bar, an external round gauge, a low-pressure type (up to 0.4 MPa) and a reverse/check valve. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range is 0.05-0.9 MPa (7-130 psi), and the operating temperature range is -20 to 70 C. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GR40015F2G AirTAC Air Pressure Regulator G1/2 |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT1/2" (G (BSPP) 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 — square, psi scale |
| Reflux valve | Not fitted |
| 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.
| GR400 | G-series pressure regulator, 400 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| G | G (BSPP) thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
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 | GR400 · PT1/2" · 0.05 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR300 |
| One size up | GR600 |
| Line order | Filter first, then regulator, then lubricator |
On a stamping or assembly press fed from a plant header, the GR40015F2G holds the cylinder circuit at the set working pressure so clamping force stays repeatable from stroke to stroke, with the psi gauge letting the setter verify the setpoint at the machine.
On a cartoning or case-packing line, diverters, pushers and sealing cylinders all need a steady, lower pressure than the main ring main delivers; this 1/2 in regulator drops the supply to the level the actuators were designed for and keeps it stable through the shift.
At the drop feeding a CNC machining centre or grinding machine, the regulator isolates the machine's air circuit from header-pressure swings, protecting tool-change and workholding functions, and the included bracket lets it mount cleanly beside the machine's air preparation point.
Size and port are the first real choice: the GR family steps through sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and the 400 size with a 1/2 in port sits in the upper-middle of that range - match the step to the flow your line actually draws, and let us confirm it against the published flow curves before you order. Then settle the decodable options: gauge scale (MPa, psi or bar, square embedded or round external), thread (PT is the standard; G and NPT are order options), bracket or panel mounting, the low-pressure type if your setpoint stays at or below 0.4 MPa, and the reverse/check valve if you need one-way protection. This unit ships with the square psi gauge fitted and the bracket included.
One honest note on sizing: AirTAC publishes GR flow as curves, not as a single rated figure, so there is no honest one-number flow claim to quote here. Tell us your application and we will confirm the sizing and the full datasheet figures on request before you commit.
Quick checklist
Without a reflux valve, air cannot flow back through the regulator — order the K option if reverse flow is required. A regulator does not remove water or particulate; that is the filter's job.
AirTAC publishes GR regulator flow as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number for this unit. Tell us your inlet pressure, set pressure and the flow your application needs, and we will confirm the sizing against the datasheet curves on request before you order.
F2 means an embedded square pressure gauge is fitted with a psi scale (MPa and bar scales are available as options, plus an external round gauge). The trailing G means the 1/2 in port is G (BSPP) thread; PT is the catalogue standard and NPT is available as an order option. The unit also comes with a mounting bracket included and can be panel-mounted.
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.