The AirTAC GR20008LF3TK 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 GR20008LF3TK is an AirTAC GR200-series air pressure regulator built for regulation only: it steps supply pressure down and holds it steady, with no filtration or lubrication function. This unit is the low-pressure (L) type, adjusting outlet pressure up to 0.4 MPa, and is drilled for 1/4 in NPT ports (NPT thread variant; PT is the standard thread and G/NPT are catalogue options to order). It leaves the factory with an embedded square gauge scaled in bar, a built-in reverse/check valve (K) so downstream pressure is held if the supply drops, and a mounting bracket included; GR regulators can also be panel-mounted.
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, with choices of gauge scale, thread type and check valve. Max 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. Flow is published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GR20008LF3TK AirTAC Low-Pressure Regulator NPT1/4 |
|---|---|
| Series | GR200 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 — square, bar 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.
| GR200 | G-series pressure regulator, 200 body — sets the port range. |
|---|---|
| 08 | Port size PT1/4". This body offers 06 = PT1/8", 08 = PT1/4". |
| 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. |
| 3 | Gauge scale: bar. 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 | GR200 · PT1/4" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size up | GR300 |
| Line order | Filter first, then regulator, then lubricator |
On a packaging or converting line, hot-glue and coating applicators need a steady, gentle air supply to actuate valves and keep hoses clear. This low-pressure regulator holds the circuit at or below 0.4 MPa, and the check valve keeps the setting stable if the main supply dips mid-run.
Fixture clamps and swing cylinders on a CNC cell often work best at reduced, closely held pressure so parts are held firmly without distortion. The GR20008LF3TK drops the 1/4 in branch feed to the required low setting, with the square bar gauge giving the operator a direct reading at the machine.
Web-handling equipment such as textile frames, film tension rollers and air-bearing guides relies on low, stable air pressure to float the web without marking it. This regulator disciplines a 1/4 in branch to that low setpoint, and panel mounting lets it sit on the machine's own control panel.
Start with the port step: GR200 carries 1/4 in ports, and the larger 300/400/600 bodies step up to 3/8, 1/2, 3/4 and 1 in as flow demand grows. This unit is the low-pressure type, so choose it when the circuit must be held at or below 0.4 MPa; the standard GR type covers 0.05-0.9 MPa. Pick the gauge scale you want to read (MPa, psi or bar) - this one is bar - and decide whether the reverse/check valve (fitted here, code K) suits your circuit. Thread is NPT on this variant; PT is the standard and G (BSPP) can be ordered. A mounting bracket is included, and GR also panel-mounts. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
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 number here. Tell us your line pressure, set pressure and the cylinders or devices you are feeding, and we will confirm the sizing from the datasheet curves on request before you order.
The L in the code marks the low-pressure regulator type, which adjusts outlet pressure up to 0.4 MPa. Choose it for circuits that must never see high pressure, such as clamping or web-handling duties. For general circuits needing the full 0.05-0.9 MPa range, the standard GR type without the L code is the right pick - we can quote that variant on request.
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.