The AirTAC GR600-25T AirTAC Air Pressure Regulator NPT1 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 PT1" 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 AirTAC GR600-25T is a genuine AirTAC air pressure regulator in the 600 size, fitted with a 1 in NPT port. This is the low-pressure type (code L), so it holds downstream pressure anywhere up to 0.4 MPa, while withstanding inlet pressure up to 1.0 MPa (145 psi). The C in the code means a round pressure gauge with an MPa scale is included, and because no bracket code is present the mounting bracket comes as standard; the GR family is also panel-mountable. As a pure regulator it contains no filter and no bowl, so there is no drain to manage. It runs on compressed air only, from -20 to 70 C - a wider temperature window than the rest of the G series.
This unit is one configuration within the GR range, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, standard or low-pressure regulation, gauge scales in MPa, psi or bar, an optional reverse/check valve (code K), and G (BSPP), NPT or PT thread options. Flow for this size is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures against your application before you order.
| Model | GR600-25T AirTAC Air Pressure Regulator NPT1 Low-Pressure |
|---|---|
| Series | GR600 pressure regulator |
| Port size | PT1" (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 | 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.
| GR600 | G-series pressure regulator, 600 body — sets the port range. |
|---|---|
| 25 | Port size PT1". This body offers 20 = PT3/4", 25 = PT1". |
| 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. |
| (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 | GR600 · PT1" · 0.05 - 0.4 MPa (7 - 58 psi) |
|---|---|
| One size down | GR400 |
| Line order | Filter first, then regulator, then lubricator |
On a carton-sealing or case-packing line, the clamp and hold-down cylinders are often run well below main header pressure to avoid crushing lightweight product. A GR600-25T set below 0.4 MPa gives the line its own stable reduced-pressure circuit straight off a 1 in drop from the header.
Blow-off and cooling air knives along a thermoforming or extrusion line need a gentle, repeatable low pressure so parts are not marked or shifted. This low-pressure regulator lets the process engineer dial the knife circuit in under 0.4 MPa and lock it there, independent of plant header swings.
Big diaphragm-actuated valves on filter and backwash headers are positioned by a low-pressure control-air circuit. A 1 in GR600-25T on each header branch holds the actuator supply steady below 0.4 MPa, keeping valve stroking consistent even as the plant air system fluctuates.
Start with the port step: the 600 size carries the 1 in connection in this range, so match it to your main and to the flow your line needs - we can confirm the flow curve for GR600 on request, since the catalogue publishes curves rather than one rated number. Then choose the regulation type: this L-coded unit is the low-pressure type, adjustable up to 0.4 MPa; if your process needs the full 0.05-0.9 MPa range, order the standard GR600 version instead. Set the gauge scale you want (MPa, psi or bar) and the thread: PT is the catalogue standard, while G (BSPP) and NPT (as on this -T model) are order options. A reverse/check valve can be added with code K, and the bracket is included as standard on GR.
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 curves, not as a single rated number, so we do not quote a flow figure here. Tell us your line's air demand and working pressure and we will confirm the GR600 flow curve and sizing against your application before you order - just ask for the datasheet.
L marks the low-pressure type of the GR regulator. Its adjustment range tops out at 0.4 MPa instead of the standard type's 0.05-0.9 MPa, which suits circuits that must run gently below main header pressure. The rest of the code decodes as: 600 size with a 1 in port, T for NPT thread, C for an included round gauge with MPa scale, and no K, so no reverse/check valve is fitted.
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.