The AirTAC GR30010LNT AirTAC Air Pressure Regulator NPT3/8 Low-Pressure 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 PT3/8" 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 GR30010LNT is an AirTAC GR300 low-pressure air pressure regulator built for compressed-air lines where the working setting stays at or below 0.4 MPa. This configuration decodes as a 3/8 in NPT port (the T suffix; PT is the catalogue standard thread and G/NPT are order options), the low-pressure type (L), and no gauge fitted (N), so downstream pressure is set on the adjuster and read with your own instrumentation. Maximum inlet pressure is 1.0 MPa (145 psi), the operating temperature range is -20 to 70 C, and a mounting bracket is included - the GR body is also panel-mountable.
This is a genuine AirTAC part. The GR regulator family is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in standard and low-pressure types, with or without a gauge, and with PT, G or NPT threads. Because AirTAC publishes flow only as curves rather than a single rated figure, we confirm the flow and datasheet figures for your application on request - just ask before ordering.
| Model | GR30010LNT AirTAC Air Pressure Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GR300 pressure regulator |
| Port size | PT3/8" (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 | Not fitted |
| 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. |
|---|---|
| 10 | Port size PT3/8". 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. |
| 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. |
| (blank) | No reverse-flow valve (the default). |
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 · PT3/8" · 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 carton-sealing and case-packing lines, pneumatic clamps and hold-downs often work best at gentle settings well below 0.4 MPa. This low-pressure GR300 regulator in the 3/8 in NPT air line lets the setter dial in a soft, repeatable clamp pressure so cartons are held firmly without crushing.
Hot-glue and coating heads on a converting line need a steady, low supply pressure to lay an even bead. Placed in the 3/8 in feed to the applicator station, this regulator holds the circuit at its low setpoint while the wider 1.0 MPa (145 psi) inlet rating tolerates normal header-pressure swings.
Air knives and blow-off nozzles on a filling or drying line are typically run at low pressure to clear moisture without scattering product. This GR300 low-pressure regulator in the 3/8 in NPT branch line keeps the blow-off circuit at its setpoint, isolated from the higher plant header pressure.
Start with the size and port: the GR300 step with a 3/8 in port suits lines where the pipe run is 3/8 in, and larger sizes (400, 600) carry larger ports for higher-demand circuits - match the size step against the flow your line needs. Next, choose the regulator type: this unit is the low-pressure type (L), correct for settings up to 0.4 MPa; if your circuit needs settings up to 0.9 MPa, the standard GR type is the right pick instead. Decide on the gauge (this code has none fitted - add one if operators need to read the setting locally, with MPa, psi or bar scales) and the thread: PT is the standard, with G (BSPP) and NPT available as order options. A bracket is included, and GR can also be panel-mounted. One honest note on sizing: AirTAC publishes flow as curves, not a single rated number, so send us your application details and we will confirm the sizing against the datasheet before you order.
Quick checklist
Without a reflux valve, air cannot flow back through the regulator — order the K option if reverse flow is required. A regulator does not remove water or particulate; that is the filter's job.
AirTAC publishes regulator flow as performance curves rather than a single rated figure, so we do not quote one number here. Tell us your line pressure, setpoint and the demand of the equipment downstream, and we will confirm the flow figures from the GR300 datasheet on request before you order.
L is the low-pressure regulator type, so this unit is intended for settings up to 0.4 MPa rather than the standard type's higher range, and N means no gauge is fitted - pressure is set on the adjuster and read with your own instrumentation if needed. If you want a local reading, GR units can be ordered with an embedded square gauge or an external round gauge in MPa, psi or bar scales.
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.