Series 1785 Manifold Pressure Test Gauges0 pages

Specifications are subject to change without notice. Visit our Web site for the most up-to-date information.
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Special Application Gauges
Series 1785 Manifold Pressure Test Gauges
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 metric
only ranges.
SPECIFICATIONS
SIZE: 2-1/2”
CASE: ABS. (P-1785, red; CR-1785, blue)
RING AND WINDOW: Threaded, polycarbonate
POINTER: Aluminum, black finish
DIAL: Steel, white background with black markings.
Refrigerant temperature scales in red
MOVEMENT: Brass, silicone treated
BOURDON TUBE: P-1785, CR-1785 – Phosphor bronze
CONNECTION: 1/8-27 NPT LM, brass
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
SPEC NUMBER SELECTION CHART
Model Number Description Spec No.
CR1785 30” 0 - 120/350 psi, R-12, R-22, R502 temperature scale 169128
P1785 0 - 500 psi, R-12, R-22, R502 temperature scale 169129
CR1785 30” 0 - 120/350 psi, R-134A temperature scale in °F and °C 169130
P1785 0 - 500 psi, R-134A temperature scale in °F and °C 169131
CR1785 30” 0 - 250/500 psi, R-410A temperature scale in °F and °C 169132
P1785 0 - 800 psi, R-410A temperature scale in °F and °C 169133
INCHES
(MM)
1.21
(30.7)
2.84
(72.0)
0.56 SQ.
(14.2)
0.34
(8.6)
0.44
(11.2)
.55
(14.0)
THREAD
Model
P1785
Model
CR1785