User Guide

Page 1 of 3
50-60 Hanover Road, Florham Park, New Jersey 07932
ASCO Valves
e
MCMXCVIII All Rights Reserved.
Printed in U.S.A.
Installation & Maintenance Instructions
SERIES
Form No.V6297R2
2-WAY INTERNAL PILOT-OPERATED SOLENOID VALVES
NORMALLY OPEN OPERATION
2I OR 2½I NPT
8210
8211
NOTICE: See separate solenoid installation and mainteĆ
nance instructions for information on: Wiring, Solenoid
Temperature, Cause of Improper Operation, Coil or
Solenoid Replacement.
DESCRIPTION
Series 8210 valves are 2-way normally open, internal pilot
operated solenoid valves designed for general service.
These valves are made of rugged forged brass and have an
integral adjustable bleed device for controlling the opening
and closing speed of the piston. Series 8210 valves are
supplied with general purpose solenoid enclosure.
Series EF8210 or 8211 valves are the same as Series 8210
except they are provided with an explosionproof/watertight
solenoid enclosure.
OPERATION
Normally Open: Valve is open when solenoid is
de-energized; closed when energized.
IMPORTANT: Minimum operating pressure differential
required is 5 psi.
Adjustable Bleed Device
Series 8210 valves have an integral adjustable bleed device
for controlling the opening and closing speed of the piston.
When valve leaves the factory, the bleed adjusting screw
(metering pin) has been preset to provide quick shockless
closing for most applications. If faster or slower closing is
required, adjust the screw (metering pin) as follows:
1. Turn metering pin in (clockwise) as far as possible
without over tightening. Then back out metering pin
(counterclockwise) two complete turns. From this
point, adjustments may be made to suit system.
2. Turn metering pin clockwise for slower closing.
3. Turn metering pin counterclockwise for faster closing.
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.
Future Service Considerations
Provision should be made for performing seat leakage,
external leakage, and operational tests on the valve with a
nonhazardous, noncombustible fluid after disassembly and
reassembly.
Temperature Limitations
For maximum valve ambient and fluid temperatures, refer
to chart below. Check catalog number prefix on nameplate
to determine the maximum temperatures.
Watt
Rating
AC/DC
Catalog
Number
Prefix
Solenoid
Class
Maximum
Ambient
Temp.
Maximum
Fluid
Temp.
1
5
.4
o
r 1
6
.1
None, KF,
SF or SC
F
125_F
(51.7_C)
180_F
(82_C)
15
.
4
or
16
.
1
AC
HT, KH,
ST or SU
H
140_F
(60_C)
180_F
(82_C)
16.8
DC
None or HT F or H
77_F
(25_C)
150_F
(65_C)
Positioning
This valve 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 solenoid
base sub-assembly area.
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 wrenches applied to valve body or piping as close as
possible to connection point.
CAUTION: 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.
MAINTENANCE
WARNING: To prevent the possibility of
personal injury or property damage, turn off
electrical power, depressurize valve, and vent
fluid to a safe area before servicing the valve.
Note: It is not necessary to remove the valve from the
pipeline for repairs.