si U.S. Gauge Product Data SPECIAL APPLICATION GAUGES U.S. Gauge P-1590 and R-1590 sprinkler gauges are designed for use on wet or dry sprinkler systems. These 3-1/2" gauges are approved by the Factory Mutual System and are listed by Underwriters’ Laboratories. The R-1590 retarded air gauge is used on the sprinkler head side of the control valve in a dry system to accurately monitor line air pressure, and also has the ability to accept water pressure up to 250 psi upon system activation. The P-1590 is used on the water supply side of the system to indicate available source pressure, and is used alone on wet systems where water is available to the sprinkler head at all times. Private labeling is available for OEM customers. SIZES: 3-1/2" RANGES: P-1590 - 0-300 psi R-1590 - 0-80 psi, retarded to 250 psi ACCURACY: ±3-2-3% (Grade B) BOURDON TUBE: Phosphor bronze WINDOW: Polycarbonate one-piece ring and crystal DIAL: Galvalume, with year of manufacture printed on dial POINTER: Aluminum, painted black CASE: PC-PBT corrosion resistant, black CONNECTION: Brass, 1/4-18 NPT LM On-line order fax: +1215-323-9450 or e-mail: [email protected] Sales/Technical Support: +1 215-293-4100 I 205 Keith Valley Road I Horsham PA 19044 U.S.A. © 2013, by AMETEK, Inc. All rights reserved. Printed in the U.S.A. PDF513 (160174) Specifications are subject to change without notice. Visit our Web site for the most up-to-date information.