The AirTAC GR20008LNTK AirTAC Air 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, 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.
The AirTAC GR20008LNTK is a pure air pressure regulator from the GR series: it does one job, holding a stable downstream pressure, and carries no filter, bowl or lubricator. This configuration is the low-pressure type, so its regulation range tops out at 0.4 MPa, and it is built for compressed-air lines where the working pressure sits well below the standard ceiling. It is decoded as a 200-size unit with an NPT1/4 (1/4 in) port, and the trailing K means a reverse (check) valve is fitted so downstream air cannot back-flow through the unit. No gauge is fitted (code N), and a mounting bracket is included; the GR body is also panel-mountable.
This is a genuine AirTAC part, sold by a distributor for the US market. The GR series spans 200, 300, 400 and 600 sizes with ports from 1/8 in to 1 in, and can be ordered with or without a gauge, with a reverse valve, as a low-pressure type, and in PT, G (BSPP) or NPT threads. 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. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing on request.
| Model | GR20008LNTK AirTAC Air 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 | 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.
| 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. |
| 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. |
| 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 fixture-clamping line where the clamps must never see more than a modest set pressure, this low-pressure GR regulator holds the downstream setting, and the fitted reverse valve stops back-flow when the upstream side is vented.
Packaging machinery often runs small actuators and air-assist functions at reduced pressure. A 200-size NPT1/4 regulator like this drops the plant air to the circuit's working pressure and keeps it steady as machine demand cycles.
Bench setups that feed air to instruments or small test rigs need a stable, low set pressure and a wide ambient range. The GR's -20 to 70 C temperature window and low pressure loss suit a regulated bench drop from the shop-air line.
Start with the port step: the GR series steps through 200/300/400/600 sizes with ports from 1/8 in to 1 in, and the right size is the one whose flow curve covers your air demand at your working pressures - ask us to check it before ordering. This unit is the low-pressure (L) type, correct only where the set pressure stays at or below 0.4 MPa; for higher set points choose a standard GR. Decide on the gauge (none here, but a round or square gauge with MPa, psi or bar scale can be ordered), the reverse/check valve (fitted here, code K), the thread (PT is the standard; G and NPT are order options, and this unit is NPT), and the bracket (included; GR is also panel-mountable). Flow is published as curves, not a single rating, so send us your flow and pressure requirements and we will confirm the sizing 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 flow as curves rather than a single rated figure, so there is no one flow number we can honestly quote. Send us your inlet pressure, set pressure and air demand, and we will confirm the sizing against the datasheet on request before you order.
L is the low-pressure type, so the regulation range tops out at 0.4 MPa instead of the standard range. N means no gauge is fitted (a gauge can be ordered). K means a reverse (check) valve is fitted. T means the port thread is NPT; PT is the standard thread and G (BSPP) is also available as an order option.
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.