The AirTAC GR20008LJF2 AirTAC Low-Pressure Air Regulator, PT1/4 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 GR20008LJF2 is an AirTAC GR200 air pressure regulator, a regulation-only unit: it reduces and holds downstream air pressure but does not filter water or particles and does not lubricate the air. This configuration is the low-pressure type, so the settable downstream pressure range tops out at 0.4 MPa, and it carries a 1/4 in PT port as the standard thread. An embedded square pressure gauge scaled in psi is fitted so the setting can be read directly at the unit, and no mounting bracket is included; the GR body can also be panel-mounted. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -20 to 70 C, wider than the rest of the G family. No reverse (check) valve is fitted.
This is a genuine AirTAC part. The GR series spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and can be ordered with a standard or low-pressure regulator, a square or round gauge in MPa, psi or bar scales, a reverse valve, a mounting bracket, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GR20008LJF2 AirTAC Low-Pressure Air Regulator, PT1/4 |
|---|---|
| Series | GR200 pressure regulator |
| Port size | PT1/4" (PT thread) |
| Regulating range | 0.05 - 0.4 MPa (7 - 58 psi) |
| Pressure type | Low-pressure type |
| Bracket | Supplied without bracket |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — square, psi 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.
| 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | PT 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 | 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 carton-sealing or case-packing line, the low-pressure regulator holds a gentle, stable supply to pneumatic clamps and hold-downs so delicate cartons are gripped without crushing, with the psi gauge letting operators verify the setting at the machine.
For bench-top lab apparatus, analytical instruments and small pneumatic actuators that require a low regulated supply, the GR20008LJF2 steps line pressure down to a low working level and keeps it steady, with the wide -20 to 70 C range suiting unheated rooms.
On weaving and knitting machines where threads and light fabric are handled by low-pressure air jets and cylinders, this regulator supplies a controlled low setting to those circuits independently of the main high-pressure line.
Start with the port step: this unit is size 200 with a 1/4 in PT port, and the GR series steps up through 300, 400 and 600 for larger ports and higher flow demand. This code is the low-pressure (L) type, so choose it when your downstream setting must stay at or below 0.4 MPa; the standard GR type covers settings up to 0.9 MPa. The fitted square gauge reads in psi; a round external gauge or MPa/bar scales are orderable alternatives. Thread is PT as standard, with G (BSPP) and NPT available to order. A mounting bracket is not included with this code, and no reverse (check) valve is fitted. Flow for the GR series is published as curves, not a single rating, so send us your application details and we will confirm 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 GR series flow as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application and we will confirm the flow figures from the datasheet on request, and help you check whether the 200 size with its 1/4 in port suits your demand before you order.
This unit is the low-pressure type, so its downstream setting range tops out at 0.4 MPa; choose it when your circuit must never be set above that level. The standard GR type covers settings up to 0.9 MPa if you need more. The embedded square gauge fitted to this code is scaled in psi; round external gauges and MPa or bar scales are available on other order codes.
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.