Viega MegaPress Instrucciones Del Producto

Product Instructions
Viega MegaPress
®
Ball Valve Maintenance
1 2
7 8
EN
Viega MegaPress 3-Piece Ball
Valve Maintenance
For MegaPress, MegaPress FKM,
MegaPress 304 FKM, and MegaPress 316
Viega products are designed to be
installed by licensed and trained plumbing
and mechanical professionals who are
familiar with Viega products and their installation.
Installation by non-professionals may void
Viega LLC's warranty.
1
Shut off the supply line. Open the ball valve.
2
Release the flange connections. Remove the bolts.
3 Remove the middle section of the ball valve
laterally.
4
See illustration for example of separated middle
section.
VALVE SIZE* Valve Body Bolt & Nut Size
(in)
½ M8 x 55
¾ M8 x 65
1 M10 x 75
1¼ M10 x 90
1½ M10 x 100
2 M10 x 100
2½ M12 x 140
3 M12 x 140
4 M12 x 140
*Sizes up to 3" have 4 bolt flanges; 4" has 6 bolt flanges.
3-Piece
3
9
5
Remove the handle.
6
Remove the ball from the valve.
7
Remove the PTFE gaskets.
8
Press out the spindle from top to bottom.
CAUTION!
Check the interior components for dirt
and damage before mounting. Clean the
components if needed.
9
Swap the spindle seal. Unscrew the stem nut.
Remove the gasket with a suitable tool.
10
Replace with new gasket.
Reassemble in the reverse order of the
disassembly steps. Refer to the torque
table below for body and stem nut torque
requirements
11
Check to see that all components have been
installed after reassembly.
12
Check to see that all components have been
assembled in the correct order.
Bolt Torque +/- 5
ft/lbs (Nm)
M8 7.5 (10)
M8 15 (20)
M10 15 (20)
M10 22.5 (30)
M10 22.5 (30)
M10 22.5 (30)
M14 45 (60)
M14 45 (60)
M14 45 (60)
Viega LLC
585 Interlocken Blvd.
Broomfield, CO 80021
Phone (800) 976-9819
www.viega.us
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10
Valve Stem Nut Size Handle Nut
(mm) ft/lbs (Nm)
AF 16 7.5
AF 18 11
AF 21 11
AF 22 18.5
AF 24 18.5
AF 24 18.5
AF 30 26
AF 30 26
AF 30 26
EN
Product Instructions
Viega MegaPress 3-Piece Ball Valve
Maintenance
This document is subject to updates. For the most current Viega
technical literature please visit www.viega.us.
ES
Instrucciones del producto
Mantenimiento de la válvula esférica
de 3 piezas Viega MegaPress
Este documento está sujeto a actualizaciones. Para obtener la
documentación técnica más reciente de Viega, visite www.viega.us.
FR
Instructions produit
Entretien de la vanne à bille à
3 pièces MegaPress de Viega
Le présent document est soumis à des mises à jour. Pour consulter
les manuels techniques Viega les plus récents, se reporter au site
Web www.viega.us.
PI-MP 530472 0821 3-Piece Ball Valve Maintenance (EN ES FR)
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11
Operating Conditions
■ Valves are not to be used in safety functions such
as safety loops or separating incompatible fluids.
■ Service shall be compatible with the materials of
construction. Valve selection is the responsibility of
the designer/engineer/user to determine if the valve
is appropriate for the intended service application.
■
Dependent upon the application and the possibility
of material deterioration in service, need for periodic
inspections are the sole responsibility of the user.
■ Supports shall not be welded directly to any part of
the valve.
■ It is the responsibility of the system designer to
implement adequate protection to minimize reaction
forces and moments.
■ It is the responsibility of the designer/installer to
adhere to all applicable codes and standards.
■
Valves are not to be used as flow control devices,
use is for on-off service only (not to be used for
throttling).
■ Operating valves while exceeding the temperature
and pressure limits may result in valve failures
where chemical attack or corrosion generally
occurs gradually.
Packing Nut Maintenance
■ The packing nut requires periodic adjustments.
10 This involves tightening the packing nut at ¼ turn
intervals. If a leak does develop, turn the packing
15
nut clockwise ¼ turn at a time and then recheck,
15
so as to not overtighten. In extreme or high use
25
systems, check the packing nut regularly.
25
■ Tightening must be carried out when the valve is
25
depressurized.
(35)
(35)
(35)
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