ASCO Valves EV8308G360 Installation and operating instructions

UNLATCHED
DE-ENERGIZED LATCHED ENERGIZED
PILOT
EXH
PILOT
PRESSURE
PILOT
PISTON
CYLINDER
EXH
PRESS
‘2’ ‘1’
AUX
CYL
PILOT
EXH
PILOT
PRESSURE
PILOT
PISTON
CYLINDER
EXH
PRESS
‘2’ ‘1’
AUX
CYL
PILOT VALVE
MANUAL RESET
MAIN VALVE
‘3’ ‘3’
ASCO Valves® E269586 - 04/2017 All Rights Reserved. I&M V_9602_R2
©ASCO Valve, Inc.160 Park Avenue, Florham Park, New Jersey 07932 www.ascovalve.com Page 1 of 4
I&M V_9602_R2
Installation & Maintenance Instructions
3-WAY MANUAL RESET PNEUMATIC/SOLENOID OPERATED VALVES
NORMALLY CLOSED OPERATION
NO-VOLTAGE RELEASE & ELECTRICALLY TRIPPED
1/2” AND 1/4” NPT - 5/8” AND 5/16” ORIFICE - STAINLESS STEEL CONSTRUCTION
CATALOG
EV8308G360
EV8308G361
EV8310G361
Low Power
Auxiliary Line Pressure PSI
Auxiliary Line Pressure vs Main Line Pressure
(Minimum Auxiliary Air 25 psi)
120
105
90
75
60
45
30
15
0 0 15 30 45 60 75 90 105 120 135 150
Main Line Pressure PSI
WARNING: Do not disassemble this valve
except as required to replace solenoid.
AVERTISSEMENT: Ne démonter pas cette
vanne sauf si il faut remplacer la bobine.
NOTICE: See separate solenoid installation and
maintenance instructions for information on: Wiring,
Solenoid Temperature, Causes of Improper Operation, and
Solenoid Replacement.
DESCRIPTION
EV8308G360 & EV8308G361 valves are 3-way, normally
closed, no-voltage release, manual reset pneumatic/solenoid
operated valves. EV8310G361 valve is a 3-way, normally
closed, electrically tripped (TSO), manual reset pneumatic/
solenoid operated valve. (Please see Flow Diagram for
Electrically Tripped Operation). Valves bodies are made of CF-
8M stainless steel with internal parts of stainless steel; elastomers
are Fluorocarbon, Fluorosilicone and Nitrile. The manual reset
assembly is anodized aluminum.
OPERATION
Auxiliary Piloting allows a zero minimum main line pressure
with the application of proper auxiliary air pressure. Refer
to Table 1, Operating Pressure Differential, and the graph
Auxiliary Pilot Pressure vs Main Line Pressure. Use this graph
to determine the minimum auxiliary air pressure required for a
given main line pressure.
For No-Voltage Release Operation
Unlatched - Solenoid De-energized: With valve unlatched and
the solenoid de-energized, main valve flow will be from cylinder
to exhaust. The pressure port is closed, whether or not auxiliary
pressure is present.
Latched - Solenoid Energized with Auxiliary Pressure
Applied: With solenoid energized and auxiliary pilot pressure
present, the valve may be manually operated (shifted) by raising
the handle until it latches the operator in the (up) latched position.
In the latched position, main valve flow will be from pressure to
cylinder. Exhaust will be closed. When solenoid is de-energized,
valve will return (trip) to the (down) unlatched position. Valve
can not be latched, until solenoid is energized, auxiliary pressure
applied, and handle is raised to the (up) latched position.
NOTE: Upon solenoid de-energization or loss of auxiliary pilot
valve pressure, valve will return (trip) to the unlatched position.
Valve can not be latched until auxiliary pilot pressure is restored,
solenoid is energized and lever handle is raised. The valve is now
latched.
Flow Diagrams for No-Voltage Release
Table 1. Operating Pressure Differential
Valve Minimum Maximum
Main valve 0 150 psig
Pilot valve 25 125 psig
For Electrically Tripped (TSO) Operation
Apply proper auxiliary pressure to port 3 of the pilot valve. Port 2
is now the auxiliary exhaust port - DO NOT BLOCK OFF.
Latched - Solenoid De-energized: With solenoid de-energized,
raise the handle until it latches in the (up) latched position. Main
valve flow is now from the pressure to the cylinder port. The
exhaust port of the main valve is closed.

LATCHED
DE-ENERGIZED UNLATCHED ENERGIZED
PILOT
EXH
PILOT
PRESSURE
PILOT
PISTON
CYLINDER
EXH
PRESS
‘2’ ‘1’
AUX
CYL
PILOT
EXH
PILOT
PRESSURE
PILOT
PISTON
CYLINDER
EXH
PRESS
‘2’ ‘1’
AUX
CYL
MANUAL RESET
MAIN VALVE
PILOT VALVE
‘3’ ‘3’
Page 2 of 4 I&M No. V_9602_R2
©ASCO Valve, Inc.160 Park Avenue, Florham Park, New Jersey 07932 www.ascovalve.com
ANPT
1/4”
1/2”
.31 [8]
”D”
”F”
ANPT
PRESS EXH
ANPT
D
2.09 [53]
2.18 [55]
CYL
”E”
Ø.28 [7]
4 MOUNTING HOLES
E
1.25 [32]
1.66 [42]
F
4.05 [103]
4.26 [108]
Figure 1. Mounting dimensions (partial view)
Unlatched - Solenoid Energized: With solenoid energized, the
handle will now return to the (down) unlatched position. The
pressure port of the main valve will close and flow in the main
valve will be from cylinder to exhaust.
NOTE: When piped in the electrically tripped (TSO) mode,
loss of auxiliary pressure will cause the operator to return to the
unlatched position - Main valve pressure will close and exhaust
will open.
Flow Diagrams for Electrically Tripped
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 only.
Temperature Limitations
Please refer to chart below, or as limited by solenoid approvals.
See solenoid installation and maintenance instructions.
Temperatures Pilot Valve Main valve
Fluid Min. -4°F (-20°C) -4°F (-20°C)
Max. 140°F (60°C) 140°F (60°C)
Ambient Min. -4°F (-20°C) -4°F (-20°C)
Max. 140°F (60°C) 140°F (60°C)
Positioning
Valve may be mounted in any position. For optimum performance
mount with operator vertical and upright.
Mounting
For valve body mounting refer to Figure 1.
Piping
There are three exhaust flow modes: pilot valve, auxiliary pilot
and main valve exhaust. For pilot valve and auxiliary pilot exhaust
use a muffler to vent to atmosphere or connect to main exhaust
system if the air or inert gas cannot be exhausted directly to the
atmosphere.
Connect piping or tubing to valve according to markings on valve
body. Refer to flow diagrams in OPERATION section and Figure
2 Valve Port Connections. 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: These solenoid valves are intended for
useoncleandryair,inertgasornaturalgas,filteredto40
micrometresorbetter.Thedewpointofthemediashould
be at least 10°C (18°F) below the minimum temperature
to which any portion of the clean air/inert gas system
could be exposed to prevent freezing. If lubricated air is
used, the lubricants must be compatible with FKM and/
or Nitrile elastomers. Diester oils may cause operational
problems. Instrument air in compliance with ANSI/ISA
Standard 7.0.01-1996 exceeds the above requirements
and is, therefore, an acceptable media for these valves.
ATTENTION : Ces électrovannes doivent être
utilisées avec de l’air sec, du gaz inerte ou gaz naturel
propre, filtré jusqu’à 40 micromètres ou plus. Le point
de rosée du fluide doit être d’au moins 10ºC inférieur
à la température minimale à laquelle toute partie du
système d’air/gaz inerte propre pourrait être exposée,
afin d’éviter le gel. En cas d’utilisation d’air lubrifié,
les lubrifiants doivent être compatibles avec le FKM
et/ou élastomères nitrile. Les huiles diester peuvent
engendrer des problèmes de fonctionnement. L’air
d’instrumentation conforme à la normeANSI/ISA 7.0.01-
1996 dépasse les exigences ci-dessus et constitue, par
conséquent, un média acceptable pour ces vannes.

Page 3 of 4 I&M No. V_9602_R2
©ASCO Valve, Inc.160 Park Avenue, Florham Park, New Jersey 07932 www.ascovalve.com

Page 4 of 4 I&M No. V_9602_R2
©ASCO Valve, Inc.160 Park Avenue, Florham Park, New Jersey 07932 www.ascovalve.com
MAINTENANCE
WARNING: To prevent the possibility of
death, serious injury or property damage,
turn off electrical power, depressurize pilot
and main valve. Vent fluid to a safe area
before servicing the valve.
AVERTISSEMENT: Afin d’évitertoutrisque
de mort, blessure ou dommage, couper
l’alimentation électrique, dépressuriser
la vanne ou l’électrovanne et vidanger le
fluide en zone non dangereuse avant toute
maintenance.
Preventive Maintenance
• Keep the medium flowing through the valve as free from dirt
and foreign material as possible.
• Periodic exercise of the valve should be considered if
ambient or fluid conditions are such that corrosion, elastomer
degradation, fluid contamination build up or other conditions
that could impede solenoid valve shifting are possible. In
many cases, solenoid valves are periodically exercised
during normal system use or as part of routine maintenance or
surveillance activities and no additional exercise is necessary.
The actual frequency of exercise necessary will depend on
specific operating conditions. A successful operating history
is the best indication of a proper interval between exercise
cycles.
• Inspect bonnet assembly for leakage at bleed hole. Leakage
indicates worn internal seals and a replacement valve should
be installed.
• Periodic inspection of the operating movement should be
carried out. Operating movement should be kept clean and
free from paint, foreign matter, corrosion, freezing and icing
conditions.
Causes of Improper Operation
• Incorrect Pressure: Check main and pilot valve pressure.
Pressure must be within range specified on nameplates.
• Dirt in Pilot Valve Exhaust Port: Install muffler or pipe
into exhaust system to prevent foreign matter from entering
exhaust port.
ORDERING INFORMATION FOR
REPLACEMENT VALVES OR SOLENOIDS
When ordering, specify catalog number, serial number, voltage,
frequency, and service. For solenoids, also specify number
printed on solenoid if possible.