The AirTAC GR30015LF2TK 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 - 0.4 MPa (7 - 58 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 GR30015LF2TK is an AirTAC GR-series air pressure regulator: it does one job, holding a stable downstream pressure from your compressed-air supply. This is the 300 size with 1/2 in NPT ports, built as the low-pressure (L) type, so the set point can be adjusted anywhere up to 0.4 MPa - suited to circuits that must never see full line pressure. The supplied pressure is read on the embedded square gauge with a psi scale (external round gauges with MPa, psi or bar scales are available), and the fitted reverse/check valve (K) lets downstream air back-flow past the regulator so the circuit can exhaust without pressure trapping. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -20 to 70 C - wider than the rest of the G family. A mounting bracket is included, and the GR body is also panel-mountable.
This is a genuine AirTAC part. The GR series spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in standard or low-pressure versions, with your choice of gauge scale, thread (PT standard; G and NPT as order options), bracket and reverse valve. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GR30015LF2TK AirTAC Air Pressure Regulator NPT1/2 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/2" (NPT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure 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 | 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". |
| L | Low-pressure type — 0.05 - 0.4 MPa (7 - 58 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. |
| 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 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR200 |
| One size up | GR400 |
| Line order | Filter first, then regulator, then lubricator |
On a carton-sealing or bagging machine, air cylinders and grippers often need a gentle, repeatable set point well below shop-air pressure. This low-pressure GR300 regulator with its psi gauge lets the line setter dial in and read the exact clamping or lifting pressure, while the check valve lets the actuator side vent cleanly on exhaust.
Bench-scale process skids and pilot rigs frequently use air to drive diaphragm pumps or actuate valves at low, closely held pressures. A low-pressure regulator with a psi-scaled gauge gives the operator a readable, adjustable set point up to 0.4 MPa, and the 1/2 in NPT ports suit the manifold piping on a mid-size skid.
Spinning, weaving and winding machines use low-pressure air for thread guides, jets and pneumatic tension arms where too much pressure damages yarn or product. This GR300 regulator holds that gentle set point, the check valve prevents trapped pressure disturbing the circuit when the machine pauses, and the included bracket fixes the unit to the machine frame.
Start with the port step: this unit is size 300 with 1/2 in NPT ports - step up to 400 or 600 if your line runs larger ports or higher demand, down to 200 for compact circuits. Choose the low-pressure (L) type only when your set point stays at or below 0.4 MPa; the standard GR covers the full 0.05-0.9 MPa range. Pick the gauge scale you want to read - MPa, psi or bar - and decide whether the embedded square gauge is enough or you want the external round gauge. Thread is PT as standard; G (BSPP) and NPT are catalogue options to order, and this code carries NPT (T). Add K if the circuit needs a reverse/check valve, and keep the bracket (or panel-mount the body) for secure fixing.
One honest note before you order: AirTAC publishes regulator flow as curves, not a single rated number, so we cannot quote you a flow figure here. Send us your application details and we will confirm the sizing against the datasheet on request.
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 regulator flow as curves, not as a single rated figure, so we do not quote a flow number for this unit. Tell us your supply pressure, set point and the demand of your circuit, and we will confirm the sizing from the datasheet on request before you order.
The L in GR30015LF2TK is the low-pressure version: its adjustment range tops out at 0.4 MPa instead of the standard GR range, for circuits that must stay gentle. The K means a reverse (check) valve is fitted, letting downstream air back-flow past the regulator. The F2 indicates the embedded square gauge with a psi scale, and T is the NPT thread option on the 1/2 in ports.
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.