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E209181---05/10
ASCO Valves
R
E
ASCO Valve, Inc.R 50 Hanover Road, Florham Park, New Jersey 07932 www.ascovalve.com
All Rights Reserved.
Installation & Maintenance Instructions
I&M No.V6055R3
3 -- WAY MINIATURE SIZED SOLENOID VAL VES
BRASS AND STAINLESS STEEL CONSTRUCTION
SERIES
8320
NORMALLY CLOSED, NORMALLY OPEN AND UNIVERSAL OPERATION
1/8 NPT -- 3/64, 1/16, 3/32 AND 1/8 ORIFICE
NOTICE: See separate solenoid installation and
maintenance instructions for information on: Wiring,
Solenoid Temperature, Cause of Improper Operation and
Coil Replacement.
DESCRIPTION
Series 8320 valves are 3---way, direct---ac ting, miniature sized
solenoid valves with all three pipe connections located in the valve
body. Valves are of rugged brass or stainless steel construction.
Standard valves have a General Purpose NEMA Type 1 Solenoid
Enclosure. Valves may also be equipped with a solenoid enclosure
which is designed to meet NEMA Type 4 --- Watertight, NEMA
Type 7 ( C or D) Hazardous Locations --- Class II, Groups E, F or
G. See Installation an d Maintenance Instructions, V9531 for
Explosionproof/Watertight Solenoid Enclosures.
OPERATION
Normally Closed: Applies pressure when solenoid is energized;
exhausts pressure when s o lenoid is de---energized. Flow is
Connection “2” to “1” when solenoid is energized. Connection “3”
is closed. Flow is from Connection “1” to “3” when solenoid is
de---energized. Connection “2” is closed. Pressure is applied at
Connection “2”.
Normally Open: A ppl i es pressure when solenoid is de---energized;
exhausts pressure when solenoid is energi zed. Flow is Connection “1”
to “2” when solenoid is energi zed. Connection “3” is closed. Fl ow is
from Connecti on “3” to “1” when solenoi d is de---energized.
Connection “2” is closed. P ressure is applied at Connection “3”.
Universal: For normall y closed or normally open operati on, selecti on
or div e rsi on of pressure can be appli ed at Connecti o ns “1”, “2” or “3”.
Flow is b et ween Connection “1” to “2” when solenoid is energized.
Connecti on “3” is closed. Flow is between Connection “1” to “3”
when solenoid is de---energized. Connection “2” is closed. Pressure
may be applied at Connection “1”, “2” or “3”.
Manual Operation (Valves with Suffix MS): Manual operator all ows
manual operat ion when desired or during an electrical power outage.
The screw type manual operator is in the “off posit i on” when
screwdriver slot is i n the hori zontal posi t i on. To engage m anual
operator, rotate stem on the side of the body clockwise 90° . Valve wil l
now be in the same position as when the sol enoi d is energized. To
disengage, rotate the stem counterclockwise back to 0° in its original
horizontal posi ti on.
DE---ENERGIZED
ENERGIZED
NORMALLY CLOSEDNORMALLY OPEN
DE---ENERGIZED
DE---ENERGIZED
ENERGIZED
ENERGIZED
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
12
3
UNIVERSAL
PRESSURE AT ANY ORIFICE
Flow Diagram
PRESSURE AT 2
PRESSURE AT 3
PRESSURE AT ANY ORIFICEPRESSURE AT 3 PRESSURE AT 2
INSTALLATION
Check nameplate for correct catalog number, pressure, voltage,
frequency, and service. Never apply incompatible fluids or exceed
pressure rating of the valve. Installation and valve maintenance to be
performed by qualified personnel.
Temperature Limitations
For maximum valve ambient and fluid temperatures, refer to the
following table. For higher ambient and fluid temperatures,
consult factory. Check catalog number prefix and watt rating on
nameplate to determine the maximum temperatures.
Construction
Watt
Rating
Prefix
Coil
Class
Max
Ambient
Tem p
Max Fluid
Tem p
C F C F
AC
6
None, DA or
S
A 25 77 82 180
DB, LB, SB,
DF, FT or SF
Hor
F
50 122 93 200
HT
H 60 140 93 200
9 [
None, DP or
SP
F 25 77 82 180
DC 9.7
None, FT,
HT, LB, S or
SF
A, F
or H
25 77 49 120
[ Catalog Numbers 8320B130, 8320B131, 8320B134, 8320B135,
8320B138, 8320B139, 8320A140, 8320A141, 8320A144, 8320A145,
8320A148 and 8320A149 are limited to a fluid temperature of 60_C
(140_F).
Positioning
This solenoid is designed to perform properly when mounted in
any position. However, for optimum life and performance, the
solenoid should be mounted vertically and upright to reduce the
possibility of foreign matter accumulating in the cartridge assembly
area.
Mounting
For mounti ng dimensions of mount ing bracket, ref er to Figure 1.
Piping
Connect piping or tubing to valve according to markings on valve
body. Apply pipe compound sparingly to male pipe threads only.
If applied to valve threads, the compound may enter the valve and
cause operational difficulty. Avoid pipe strain by properly
supporting and aligning piping. When tightening the pipe, do not
use valve or solenoid as a lever. Locate w renches applied to valve
body or piping as close as possible to connection point.
IMPORTANT: To protect the solenoid valve, install a
strainer or filter, suitable for the service involved, in the inlet
side as close to the valve as possible. Clean periodically
depending on service conditions. See ASCO Series 8600,
8601 and 8602 for strainers.
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