High-Low Pressure
Pilot
Introduction
This instruction manual includes the following
information for CVS 7970 High-Low Pressure Pilot:
1. D
escription
2. Piston Arrangement Changeover Instructions
3. Parts Information
O
nly persons qualified through training or experience
should install, operate and service this equipment. If
you have any questions regarding this product or this
manual, please contact your CVS Controls Sales
Representative before proceeding.
Description
The CVS 7970 is a versatile sensor that can be
programmed to detect and react to either increasing
pressure or decreasing pressure with an adjustable
range of 2 to 10,000 PSI (.138 to 689.5 bar).
W
hen used within standard safety systems, a
pressure sensor monitors a specific media or
process pressure source for changes to the normal
operating range. Loss of pressure within the control
circuit will begin a shutdown sequence or trigger an
alarm, and pressure sensors can also indirectly
operate on/off flow control valves or pneumatic
driven pumps.
T
he CVS 7970 is a two position, three-way pilot with
universal ports (H, O, L), automatic reset (spring
return) and pressure balance spool.
Each CVS 7970 is a self-contained unit containing
necessary components for four different piston
arrangements. Changeover instructions and
drawings are included in this manual. Parts which
are not installed in your current piston arrangement
are kept in an enclosed storage tube. Machined
within the piston housing of the CVS 7970 is a
convenient 1/8”–27 NPT Female process connection
and 1/2” NPT Male process connection.
3900 – 101 Street
Edmonton, Alberta, Canada T6E 0A5
Office: (780) 437-3055
Fax: (780) 436-5461
Website: www.cvs-controls.com E-Mail: info@cvs-controls.com
Calgary Sales Office
3516 114 Avenue SE
Calgary, Alberta, Canada T2Z 3V6
Office: (403) 250-1416
Fax: (403) 291-9487
Figure 1: CVS 7970 High-Low Pressure Pilot
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