The AirTAC GR30008LC1TK AirTAC Low-Pressure Regulator NPT1/4 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 PT1/4" 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 GR30008LC1TK is an AirTAC GR300 air pressure regulator in the low-pressure type, built purely for pressure regulation: it contains no filter, no bowl and no lubricator. This configuration carries a 1/4 in NPT port, a regulation range up to 0.4 MPa, a round pressure gauge with an MPa scale, and a reverse (check) valve fitted so downstream pressure is held if the supply drops. A mounting bracket is included, and the regulator is also panel-mountable.
This is a genuine AirTAC part. The GR series is offered in sizes 200, 300, 400 and 600 with a choice of PT, G or NPT thread, standard or low-pressure regulation, gauge scale in MPa, psi or bar, and an optional reverse valve. Max working (inlet) pressure is 1.0 MPa (145 psi) and the GR operating temperature range is -20 to 70 C. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing figures from the datasheet on request.
| Model | GR30008LC1TK AirTAC Low-Pressure Regulator NPT1/4 |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT1/4" (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 — round, MPa 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. |
|---|---|
| 08 | Port size PT1/4". 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 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 · PT1/4" · 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 line, the sealing arms and hold-down clamps are actuated at low pressure to avoid crushing the product. This low-pressure GR300 regulator holds a gentle, stable setpoint up to 0.4 MPa at each 1/4 in drop, and the fitted check valve keeps the cylinders from drifting if the main supply dips mid-cycle.
Automated diaphragm and butterfly valves in a treatment plant rely on clean, steady pilot air at modest pressure. Mounted on the valve-actuation panel with its included bracket, this regulator supplies the pilot circuit, while the round MPa gauge lets the technician verify the setpoint during routine walkthroughs.
Analytical instruments and sample-handling enclosures often need low-pressure air to actuate small grippers or purge housings. This 1/4 in NPT regulator steps the building supply down to the low setpoint the instrument requires, and the check valve prevents backflow from the enclosure into the distribution line.
Start with the size and port step: GR is offered in sizes 200, 300, 400 and 600, and the port steps from 1/8 in up to 1 in - match the size to the air demand of the circuit, since larger sizes carry larger ports and more flow. This unit is the low-pressure type (L), regulating up to 0.4 MPa; choose the standard type instead if your setpoint sits higher. The gauge code here is C1: an external round gauge with an MPa scale, while square gauges and psi or bar scales are also available. The trailing T sets an NPT thread; PT is the standard and G (BSPP) is an order option. The K code adds a reverse (check) valve, and the bracket is included (GR is also panel-mountable).
One honest note on sizing: flow for this series is published as curves, not as a single rated number, so send us your application details and we will confirm the right size against the datasheet before you order.
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-series flow as curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Send us your line pressure, setpoint and the air demand of the equipment, and we will confirm the correct size against the datasheet on request before you order.
L marks the low-pressure type: this regulator adjusts up to 0.4 MPa instead of the standard GR range, for circuits that need gentle setpoints. K means a reverse (check) valve is fitted, so downstream pressure is retained if the upstream supply is lost. The C1 gauge code gives an external round gauge with an MPa scale.
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.