ASCO Valves 8222 Series Installation & Maintenance Instructions

Installation & Maintenance Instructions
2-WAY INTERNAL PILOT-OPERATED SOLENOID VALVES
NORMALLY CLOSED OPERATION — STEAM SERVICE
NOTICE: See separate solenoid installation and maintenance
instructions for information on: Wiring, Solenoid Temperature,
Cause of Improper Operation and Coil Replacement.

DESCRIPTION

Series 8222 valves are 2-way normally closed, internal pilot-operated
solenoid valves designed for steam service. Valves are made of rugged
brass or stainless steel with internal parts of stainless steel and elastomers
of ethylene propylene or Afl as®. Series 8222 valves may be provided with
a general purpose or explosionproof solenoid enclosure.
Notice: Constructions with an "LF" suffi x meet the lead free-brass
requirement of SDWA 1417 having 0.25% or less lead (Pb) in brass.
Due to the variety of operating conditions and applications of these
products, the user, through analysis and testing, is solely responsible
for making the fi nal selection of the products and assuring that all
performance, safety, and warning requirements of the applications
are met.

OPERATION

Normally Closed: Valve is closed when solenoid is de- energized; open
when energized.
NOTE: No minimum operating pressure differential required.
Manual Operator
(optional feature)
Manual operator allows manual operation when desired or during an
electrical power outage. To engage manual operator (open the valve),
turn stem clockwise until it hits a stop. Valve will now be in the same
position as when the solenoid is energized. To disengage manual
operator (close the valve), turn stem counterclockwise until it hits a stop.
CAUTION: For valve to operate electrically, manual
operator stem must be fully rotated counterclockwise.
ATTENTION: Afi n que la vanne fonctionne électriquement,
la commande manuelle doit être complètement tournée dans
le sens inverse des aiguilles d'une montre.

Relocation of Manual Operator

WARNING: To prevent the possibility of death,
serious injury or property damage, turn off
electrical power, depressurize solenoid operator
and/or valve, and vent fl uid to a safe area
relocating manual operator.
AVERTISSEMENT: Pour éviter tout risque de
décès, de blessure grave ou de dégâts matériels,
avant de remettre en place l'opérateur manuel :
couper l'alimentation électrique, dépressuriser la
vanne et purger le fl uide dans une zone sûre.
Manual operator may be relocated at 90° increments by rotating the
valve bonnet as follows:
1. See separate solenoid installation and maintenance instructions
and follow instructions to loosen solenoid to allow rotation of
enclosure.
2.
Be sure manual operator stem is counterclockwise.
3. Remove bonnet screws from valve body.
4. Lift valve bonnet slightly and rotate to desired position. Do not
rotate the diaphragm assembly with the valve bonnet.
AFLAS® is a registered trademark of the Asahi Glass Co., Ltd
®
ASCO Valves
©
ASCO Valve, Inc. 50 Hanover Road, Florham Park, New Jersey 07932
3/8" , 1/2" OR 3/4" NPT
All Rights Reserved
E268269 - 10/2016
5.
Replace bonnet screws and torque in a crisscross manner to 50
± 5 in-lbs [5,7 ± 0,6 Nm]. Position and tighten solenoid in place,
see separate instructions.
WARNING: To prevent the possibility of death,
personal injury or property damage, check valve
for proper operation before returning to service.
AVERTISSEMENT : Afi n de prévenir le risque
de décès, de graves blessures ou de dommage
matériel, vérifi ez le bon fonctionnement de la
vanne avant la remise en service.
6. Test operate valve electrically and manually. Be sure valve can be
test operated without effecting other equipment.
7. Restore line pressure and electrical power supply to valve.

INSTALLATION

Check nameplate for correct catalog number, pressure, voltage, fre-
quency, and service. Never apply incompatible fl uids or exceed pres-
sure rating of the valve. Installation and valve maintenance to be per-
formed by qualifi ed personnel.

Future Service Considerations

P rovision should be made for performing seat leakage, external leak-
age, and operational tests on the valve with a nonhazardous, noncom-
bustible fl uid after disassembly and reassembly.
IMPORTANT: Maximum operating pressure differentials are
based on temperature-related material limitations. Therefore, do
not use valves with a steam source of higher pressure than the
nameplate maximum operating pressure differential. Also do not
use a pressure reducing valve to reduce steam source to rated pres-
sure because this would result in superheated steam of excessive
temperature entering the valve.

Temperature Limitations And Pressure Ratings

For maximum valve ambient and fl uid temperatures, refer to chart
below or as limited by solenoid approvals. See solenoid installation and
Maintenance instructions.
Maximum Pressure Rating psi & service
(Maximum Operating Pressure
Differential)
50 steam

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.

Mounting

For mounting bracket (optional feature) dimensions, refer to Figure 1.

Piping

Connect piping or tubing to valve according to markings on valve body.
CAUTION: This valve is equipped with ethylene propylene
elastomers which can be attacked by oils and greases. Wipe
the pipe threads clean of cutting oils.
ATTENTION: Cette vanne est équipée d'élastomères en
éthylène-propylène qui peuvent être attaqués par les huiles
et les graisses. Essuyez les fi letages des canalisations pour
éliminer les huiles de coupe.
www.ascovalve.com
I&M V_5452_R7
SERIES
8222
Max. Max.
Coil
Ambient Fluid
Class
Temp. °F Temp. °F
F or H 77 300
I&M V_5452_R7
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