US Gauge Series 1785 Data Sheet

Product Data

1.21

(72.1)

(11.2)

SPECIAL APPLICATION GAUGES

Series 1785 Manifold Pressure
Test Gauges

1SAG - 1SAG -

DESCRIPTION

Model 1785 2-1/2" manifold pressure test gauges offer
several ranges for use with various types of refrigerants,
including R-12, R-22, R-502, R-134A and R-410A. The
gauges can be permanently mounted in cooling systems
or used on portable manifolds.

Type CR-1780 is supplied with 350 psi retard scale
to accommodate accidental over-pressure. All gauges
feature a one piece polycarbonate ring and window. This
provides quick, easy access to internal front adjusting
screw for resetting the pointer.

Gauges are available in English, dual scale, or metric­only ranges. Custom sizes and dials are available for
OEM customers.

SPECIFICATIONS

SIZES: 2-1/2"

RANGES: P-1785 – 0-500 psi, 0-800 psi

CR-1785 – 30" Hg VAC, 0-120 psi retarded to 350 psi; 30" Hg
VAC, 0-250 psi retarded to 500 psi

ACCURACY: ±3-2-3% of span (Grade B), applies to non-retard
portion

BOURDON TUBE: Phosphor bronze

WINDOW AND RING: Threaded, polycarbonate

MOVEMENT: Brass, silicone treated; adjustable with

re-calibration screw

DIAL: Steel, white background with black markings; refrigerant
temperature scales in red

POINTER: Aluminum, black finish

CASE: ABS (P-1785 – red; CR-1785 – blue)

CONNECTION: 1/8-27 NPT LM, brass

(30.7)

2.84

INCHES

(MM)

Model P-1785

Model CR-1785

Spec Number Selection Chart

© 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.

Model Number Description Spec No.

CR-1785

P-1785 0-500 psi, R-12, R-22, R502 temperature scale 169129

CR-1785 30" VAC-0-120/350 psi, R-134A temperature scale in °F and °C 169130

P-1785 0-500 psi, R-134A temperature scale in °F and °C 169131

CR-1785

P-1785

30" VAC -0-120/350 psi, R-12, R-22, R502 temperature scale

30" VAC-0-250/500 psi, R-410A temperature scale in °F and °C

0-800 psi, R-410A temperature scale in °F and °C

On-line order fax: [phone] or e-mail: [e-mail]

Sales/Technical Support: [phone] | 205 Keith Valley Road | Horsham PA 19044 U.S.A.

0.34
(8.6)

0.56 SQ.
(14.2)

THREAD

0.44

0.55

(14.0)

169128

169132

169133

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