ASCO Valves EV8308G360 Istruzioni per l'installazione e il funzionamento

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 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

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

2.09 [53]

2.18 [55]

CYL

”E”

Ø.28 [7]

4 MOUNTING HOLES

1.25 [32]

1.66 [42]

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.

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