Skip to the beginning of the images gallery

Aro-Flo Series Air Line Regulator, 1/8 NPT Ports, 0-140 PSI PSI Spring Range, 45 SCFM Flow Rating

Description & Features

Designed to fit into compact setups this 1000 Series regulator accommodates 1/8 NPT ports and guarantees a flow rating of 45 SCFM. This regulator from Ingersoll-Rand Industrial U.S. Inc. boasts robust construction with an aluminum body and brass & nitrile valve.

Air line regulators provide controlled consistent air pressure as required for specific pneumatic equipment connected to the air system. This model features a standard adjustment range of 0-140 psi ensuring reliability in various industrial applications.

All 1000 Series Aro-Flo regulators come with a gauge for precise pressure monitoring and non-relieving models are available for applications where downstream overpressure venting is undesirable. Modular spacer kits enable easy assembly in different configurations ensuring flexibility in diverse setups.

The Aro-Flo Series Air Line Regulator 1/8 NPT Ports 0-140 PSI Spring Range 45 SCFM Flow Rating includes a nitrile and acetal diaphragm steel springs and polycarbonate gauge cover providing durability for intensive industrial environments. The maximum inlet pressure is rated at 250 psi with a temperature range of 23-140F.

MPN: R37111-100

Supplier Part Number: R37111-100

Specifications

Dimensions 1.58W x 3.56H	Brand Ingersoll-Rand Industrial US	Brand Ingersoll-Rand	Pack Size 1.00	UOM EA	Flow Rating (SCFM) 45	Gauge Yes	Port Size 1/8 NPT	Pressure Range (psi) 0-140 PSI	Series 1000	Supplier Part Number R37111-100	Alternate Part Numbers Alternate Part Number C1KH42	Product Weight 0.99 lbs

Similar Products

Model Number	Series	Flow Rating (SCFM)	Type	Pressure Range (psi)	Gauge	Dimensions
R37111-100 Aro-Flo Series Air Regulator	1000	45	Relieving	0-140 PSI	Yes	1.58W x 3.56H
R37121-100 Aro-Flo Series Air Regulator	1000	59	Relieving	0-140 PSI	No	1.58W x 3.56H
R37221-100 Aro-Flo Series Air Regulator	1500	86	Relieving	0-140 PSI	No	2.21W x 4.77H
R37331-100 Aro-Flo Series Air Regulator	2000	179	Relieving	0-140 PSI	No	2.78W x 5.47H
R37331-600 Aro-Flo Series Air Regulator	2000	179	Relieving	0-140 PSI	Yes	2.78W x 5.47H
R37341-100 Aro-Flo Series Air Regulator	2000	215	Relieving	0-140 PSI	No	2.78W x 5.47H
R37341-600 Aro-Flo Series Air Regulator	2000	215	Relieving	0-140 PSI	Yes	2.78W x 5.47H

Product Questions & Answers (1)

Question by: Neil B on Mar 18, 2026, 5:58 PM

got a little air setup with 1/8 npt lines. is this regulator the right size and what kinda pressure can i dial in

Answer by: Customer Support on Mar 20, 2026, 10:12 AM

For compact air hydraulic connections, it matches up with 1/8 NPT ports and it adjusts across a 0 to 140 psi spring range. It also comes with a gauge, so you can set and keep an eye on the downstream pressure without guessing.