AirTAC GR300-15 Pressure Regulator (GR30015JNK)
The AirTAC AirTAC GR300-15 Pressure Regulator (GR30015JNK) 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, ordered without a 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 gaugeNot fitted
- Reflux valveFitted
- ThreadPT
- BracketSupplied without bracket
About the AirTAC GR300-15 Pressure Regulator (GR30015JNK)
The GR30015JNK is an AirTAC GR-series air pressure regulator: it reduces and holds a steady downstream pressure from your compressed air supply. The 300 size carries a PT1/2 port, and the JNK suffix specifies no mounting bracket, no gauge, and a built-in reverse (check) valve that holds downstream pressure when the upstream supply is removed. As a pure regulator it contains no filter, bowl or lubricator, so it should be paired with a GF filter upstream if the line also needs water and particulate removal.
This is a genuine AirTAC part. The GR family is offered in 200, 300, 400 and 600 sizes with ports from PT1/8 to PT1, with G (BSPP) and NPT thread options to order, and optional gauges or brackets. AirTAC publishes flow only as curves rather than a single rating, so we confirm the exact flow and datasheet figures for your application on request.
AirTAC GR300-15 Pressure Regulator (GR30015JNK) Technical Specifications
| Model | AirTAC GR300-15 Pressure Regulator (GR30015JNK) |
|---|---|
| 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 | Not fitted |
| 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.
Model Code: AirTAC GR300-15 Pressure Regulator (GR30015JNK)
| 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. |
| N | No pressure gauge (N). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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.
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 (GR30015JNK) Is Used
Plant air drop regulation
Fitted at the take-off point of a factory compressed-air main, the regulator steps the header pressure down to the level a production cell needs and holds it steady as downstream machines cycle on and off.
Pneumatic valve actuation stations
Used ahead of a bank of directional control valves on an automated machine, it supplies the valve stack with a fixed pressure so actuator speeds and clamping forces stay repeatable.
Panel-mounted air sub-circuits
Installed on a sub-plate in an electrical/pneumatic control cabinet, the check valve keeps that branch held at pressure when the main supply is shut off, protecting settings on sensitive downstream devices.
Is the AirTAC GR300-15 Pressure Regulator (GR30015JNK) the Right Regulator?
Choose the size and port step (200 through 600, 1/8" to 1") against the air demand of the circuit, then set the pressure range: this standard GR unit adjusts from 0.05-0.9 MPa (7-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi). The K in this code adds a reverse/check valve, which is useful where you want the downstream side to stay pressurised if supply is lost; omit it if not needed. This JNK configuration has no gauge and no bracket - add a gauge code (C or F, MPa/psi/bar scale) if you want local pressure indication, and note that PT is the standard thread with G and NPT available as order options. Because AirTAC publishes flow as curves and not a single rated figure, ask us to confirm sizing against your application before ordering.
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.
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 GR300-15 Pressure Regulator (GR30015JNK) FAQ
AirTAC does not publish a single rated-flow number for the GR series; flow is given as performance curves instead, so any one figure would be misleading. Tell us your line pressure, set pressure and air demand and we will confirm the correct sizing and flow from the datasheet on request.
K is the AirTAC code for a reverse (check) valve fitted in the regulator, which holds downstream pressure when upstream supply is removed. The same regulator without the check valve is available under the equivalent code without the K - just ask and we will decode the right variant for your circuit.
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Request a Quote for AirTAC GR300-15 Pressure Regulator (GR30015JNK)
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.