Schneider Electric AV-497 Installation Instructions

AV-497

Valve Linkage for MK-6811 and MK-6911

General Instructions

Application

The AV-497 valve linkage kit is used to field assemble MK-6811 actuators onto 2-1/2” to 5” VB-8xxx series valves and MK-6911 actuators onto 6” VB-8xxx series valves.

Features

• Die cast aluminum mounting bracket.

• Valve position indication provided as standard.

Printed in U.S.A. 6-10

Copyright 2010 Schneider Electric All Rights Reserved.

F-27253-4

Applicable Literature

	F-Number	Description		Audience	Purpose
					Provides a comprehensive listing
					of Schneider Electric component
	F-27383	Pneumatic Products Catalog			products, describing their features
					and specifications, and provides
					other reference material useful to
					their selection.
					Provides features, specifications,
	F-27199	Vx-8xxx Series Selection Guide			mounting dimensions, and other
					criteria useful to the selection of
			–	Sales Personnel	Vx-8xxx series valves.
	F-27193	VB-8213 Flanged Valves General Instructions			Describes the valve’s features,
			–	Application Engineers
					specifications, and possible
	F-27194	VB-8223 Flanged Valves General Instructions
			–	Installers
					applications. Provides
			–	Service Personnel
	F-27197	VB-8303 Flanged Valves General Instructions			step-by-step mounting
			–	Start-up Technicians
					instructions.
					Describes the actuator’s features
	F-13985	MK-6600 Series, MK-6800 Series, MK-6911 Pneumatic			and applications. Provides
		Actuators General Instructions			step-by-step mounting
					instructions.
					Describes the positioner’s
					features, specifications, and
	F-22909	AK-42309-500 Positive Positioner General Instructions			possible applications. Provides
					step-by-step mounting and
					adjustment instructions.
			–	Application Engineers
	F-26080	EN-205 Water System Guidelines	–	Installers	Provides treatment guidelines for
			–	Service Personnel	water and steam systems.
			–	Start-up Technicians

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Copyright 2010 Schneider Electric All Rights Reserved.

F-27253-4

SPECIFICATIONS

Refer to the VX-8XXX Selection Guide, F-27199, for information on close-off pressures, temperature restrictions (ambient and fluid), and valve assembly dimensions.

Table-1 AV-497 Valve Linkage Component Selection.

				Stem	Spacers	Mounting	Mounting	Connector	Indicating	Stem	Scale
				Lock Nut		Bracket	Bracket	Pin	Plate	Extension	Length
							Bolts
	Valve Body	Valve	Actuator
		Size
VB-8213-0-5-12
VB-8223-0-5-12 2-1/2”
VB-8303-0-5-12
VB-8213-0-5-13
VB-8223-0-5-13 3”							(2)
VB-8303-0-5-13			MK-6811a								1”
					Not Used		1-1/4”
VB-8213-0-5-14											(25 mm)
							Long		(1) with
VB-8223-0-5-14		4”		(1) 1/2”		(1)		(1)		(1)
									1/2” Hole
VB-8303-0-5-14
VB-8213-0-5-15
VB-8223-0-5-15 5”
VB-8303-0-5-15
VB-8213-0-5-16			MK-6911b				(2)				2”
VB-8223-0-5-16		6”			(2)		2-1/4”
											(51 mm)
VB-8303-0-5-16							Long
a	AK-42309-500 positive positioner optional.
b	AK-42309-500 positive positioner required.

INSTALLATION

Inspection

Inspect the carton for possible damage. If damaged, notify the appropriate carrier immediately. If undamaged, open the carton and inspect the kit for obvious damage. Return any damaged products.

Requirements	• Tools (not provided):
	– Appropriate wrenches for stem extension, mounting bolts, and lock nuts.
	• A source of pressurized air, suitable for applying air pressure to the actuator and
	sufficient to fully stroke the piston.
	• Training: Installer must be a qualified, experienced technician.
Location
	Caution:
	• Avoid locations where excessive moisture, corrosive fumes, or vibration are present.
	• Install all two-way valves so that they close against the flow. An arrow on the valve
	indicates the proper direction of flow. Flow is from port A (inlet) to port AB (outlet).
	• VB-8303 may be piped as a mixing valve (two inlets and one outlet) or a diverting valve
	(one inlet and two outlets). Flow is from ports A and B to AB (mixing) and from AB to A
	and B (diverting).
	• Do not install the actuator below the centerline of the valve. For steam applications,
	mount the actuator on the valve body at 45 from vertical.

F-27253-4

Copyright 2010 Schneider Electric All Rights Reserved.

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