Pcvs-1, -2, Control valve supervisory switch – Potter Releasing Systems User Manual
Page 76
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PAGE 4 OF 4
PCVS-1, -2
CONTROL VALVE
SUPERVISORY SWITCH
PRINTED IN USA
MFG. #5400980 - REV V
5/09
OPEN VALVE POSITION
CLOSED VALVE POSITION
COM.
SW #1
SW #2
COM.
N.O.
N.C.
N.O.
N.C.
DWG# 980-11
COM.
SW #1
SW #2
N.O.
N.C.
N.O.
N.C.
Contacts shown in normal (valve open) condition.
This figure shows the Model PCVS mounted on the valve
yoke, with a bracket supplied by the valve manufacturer,
to supervise a pressure reducer type valve.
Note: This application is subject to the approval of the
authority having jurisdiction.
Typical Switch Action
Typical Electrical Connections
Please Note: This device should be wired in
accordance with the applicable parts of the National
Electrical Code, all state and local codes, applicable
NFPA Standards and the requirements of the authority
having jurisdiction.
Fig. 14
Typical Pressure Reducer Type Valve
Installation
Fig. 11
Model PBK-L
Stock No. 0090132
(MDT-4S Actuator)
Model PBK-M
Stock No. 0090146
(MDT-3S Actuator)
Model PBK-S
Stock No. 0090133
(MDT-2S Actuator)
Pratt Butterfly Valve Kit as used to mount a PCVS on
a Pratt Model IBV Valve.
Kits contain: Bracket, nuts and instructions
Note: This application is subject to the approval of the
authority having jurisdiction.
PBK - Pratt IBV Butterfly
Valve Kit
Fig. 12
ITT Grinnell/Kennedy Indicating
Butterfly Valve
Fig. 9
Dresser Indicating Butterfly Valve
Fig. 10
PVK - Pratt PIVA Post
Indicator Valve Kit
(Stock No. 1000060)
Fig. 13
Pratt Valve Kit as used to mount a PCVS on a Pratt
Model PIVA Valve.
Kit contains: Instructions, template,
screw and nut.
Note: This application is subject to the approval of the
authority having jurisdiction.
Switches Shown in Valve Open Position
DWG# 980-7
1/2”
(13mm)
VALVE PARTIALLY CLOSED
VALVE OPEN
DWG# 980-6
1/32”
(0,8mm)
LOCAL CIRCUIT
TO POWER FOR
INDICATING DEVICE
COM.
N.O.
N.C.
N.O.
N.C.
TO SUPERVISORY
CIRCUIT OF CONTROL
PANEL
COM.
INDICATING
DEVICE
END OF LINE
RESISTOR
DWG# 980-12
PCVS
COLLAR
LOCKNUT
NIPPLE
1/16” (1,6mm)
MIN. GAP
DWG# 980-10
MACHINE
SCREW #8-32
DWG# 980-9