AirTAC GR300-15 Pressure Regulator (GR30015C3)
The AirTAC AirTAC GR300-15 Pressure Regulator (GR30015C3) 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.
- TypePressure regulator
- Port sizePT1/2"
- Regulating range0.05 - 0.9 MPa (7 - 130 psi)
- Pressure typeStandard type
- Pressure gaugeFitted
- Reflux valveNot fitted
- ThreadPT
- BracketFixing bracket included
About the AirTAC GR300-15 Pressure Regulator (GR30015C3)
GR30015C3 is an AirTAC G-series air pressure regulator: regulation only, with no filter bowl and no lubricator. This size 300 unit carries the standard PT female thread in 1/2 in, and the C3 suffix specifies an external round pressure gauge with bar scale. The standard-type regulator adjusts outlet pressure across 0.05-0.9 MPa (7-130 psi) against a maximum inlet pressure of 1.0 MPa (145 psi), on compressed air only. Operating temperature is -20 to 70 C (non-freezing), the widest window in the G series.
This is a genuine AirTAC part. The G-series regulator range runs from size 200 to size 600 with ports from 1/8 in to 1 in, and options include PT (standard), G or NPT threads, embedded square or external round gauges with MPa, psi or bar scales, a low-pressure type rated up to 0.4 MPa, and a built-in reverse (check) valve. A bracket is included. Flow data is published as curves rather than a single rating, so ask us to confirm flow and datasheet figures for your application on request.
AirTAC GR300-15 Pressure Regulator (GR30015C3) Technical Specifications
| Model | AirTAC GR300-15 Pressure Regulator (GR30015C3) |
|---|---|
| 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 | 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 | 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.
Model Code: AirTAC GR300-15 Pressure Regulator (GR30015C3)
| 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. |
| (blank) | PT 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.
Size Class
- GR200PT1/8" - PT1/4"
- GR300PT1/4" - PT1/2"
- GR400PT3/8" - PT1/2"
- GR600PT3/4" - PT1"
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 |
Where the AirTAC GR300-15 Pressure Regulator (GR30015C3) Is Used
Plant ring-main drop feeds
Dropping pressure from a factory ring main to individual machine stations, with the 1/2 in PT port matching standard UK-style ring-main drops.
Maintenance workshop bench
Feeding a workshop air bench where technicians set tool supply pressure by eye on a bar-scale gauge, the reading the team already works in.
Jig and fixture clamping
Holding a fixed clamping pressure on weld-jig and assembly-fixture cylinders, where the set-and-lock regulator keeps clamp force repeatable.
Is the AirTAC GR300-15 Pressure Regulator (GR30015C3) the Right Regulator?
Match the size code (200/300/400/600) to the port and flow your circuit needs; size 300 with its 1/2 in PT port is the mid-range step. Choose the gauge: embedded square or external round, and pick the scale that suits the maintenance team - MPa (1), psi (2) or bar (3), which is what the C3 code carries here. PT thread is the standard build; G(BSPP) and NPT are catalogue options to order. Flow is published as curves, not a single rating, so send us your flow and pressure conditions and we will confirm sizing against the datasheet before you order.
Quick checklist
- ✓ Body size for your peak flow (PT1/2" here)
- ✓ Standard 0.9 MPa or low-pressure 0.4 MPa
- ✓ Gauge fitted, or order N without
- ✓ Gauge shape C round / F square
- ✓ Scale MPa (1), psi (2) or bar (3)
- ✓ Reflux valve needed, order K
Installation & Maintenance Notes
- check Install downstream of the filter, following the airflow arrow.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Set pressure while air is flowing, then lock the knob.
- check Adjust within 0.05 - 0.9 MPa (7 - 130 psi) only.
- check Operating range -20 to +70 °C.
- check Panel-mount or use the fixing bracket; do not hang it on tubing.
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 GR300-15 Pressure Regulator (GR30015C3) FAQ
AirTAC publishes regulator flow as curves rather than a single rated figure, so no single number is quoted here. Give us your inlet pressure, set pressure and demand, and we will confirm the sizing from the datasheet on request.
The third digit of the gauge suffix sets the scale: 1 is MPa, 2 is psi and 3 is bar. GR30015C3 therefore carries a round gauge reading in bar - pick the scale your team reads most easily.
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Standard models usually ship in 3-4 days.
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Request a Quote for AirTAC GR300-15 Pressure Regulator (GR30015C3)
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.