Bray MCCANNALOK Operation And Maintenance Manual
BRAY/MCCANNALOK EN
High Performance Butterfly Valve
Operation and Maintenance Manual
YOUR GLOBAL FLOW CONTROL PARTNER
™
Bray/McCannalok EN
Operation and Maintenance Manual
1
The Information contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its
proprietary nature without the express written permission of Bray International, Inc.
For information on this product and other Bray products please visit us on our website · www.bray.com
TABLE OF CONTENTS
1.0 Definition of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.0 Valve Indentification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.0 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.0 Stem seal replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7.0 Seat replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
8.0 Disc and Stem replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
9.0 Field adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
10.0 Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Bray/McCannalok EN
Operation and Maintenance Manual
2
The Information contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its
proprietary nature without the express written permission of Bray International, Inc.
1.0 DEFINITION OF TERMS
indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
NOTICE
Used without the safety alert symbol indicates a potential situation which,
if not avoided, may result in an undesirable result or state, including
property damage.
READ AND FOLLOW THESE INSTRUCTIONS
SAVE THESE INSTRUCTIONS
2.0 INTRODUCTION
2.1 The Bray/McCannalok EN high performance
butterfly valve combines the advantages
of trunnion-type ball valves with the easy
operation, light weight, and low cost of butterfly
valves. One basic design is suitable for a wide
range of services, including oxygen, chlorine,
sour gas, vacuum, and steam applications.
2.2 FEATURES INCLUDE:
2.2.1 Bubble tight shutoff provided throughout a
wide range of operating conditions.
2.2.2 Suitable for both modulating and on/off
services, the Bray/McCannalok EN butterfly
valve is easily automated with your choice
of manual operators, electric and pneumatic
actuators, positioners, and controls.
2.2.3 External travel stop for preventing overtravel of disc in opening and closing.
2.2.4 Uninterrupted gasket sealing faces.
2.2.5 Extended neck body for providing pipe
insulation clearance of 60mm.
2.2.6 Blind bottom body design up to DN 300.
2.2.7 Bearing seal for protecting bearings from
particle ingress.
2.3 Additional information about Bray/McCannalok
EN butterfly valves – including application
data, engineering specifications, and actuator
selection is available from your Bray distributor
or sales representative.
Bray/McCannalok EN
Operation and Maintenance Manual
3
The Information contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its
proprietary nature without the express written permission of Bray International, Inc.
3.0 VALVE IDENTIFICATION
3.1 All Bray/McCannalok EN valves are provided
with an identification tag with the following data
printed on it:
> P/N: Full part number of the valve assembly
> S/N: Unique serial number of valve
> TAG : Valve or instrument tag number
provided by customer
> DN: Valve size e.g. DN 150
> PN: Pressure rating of mating flange
> TS: Maximum permissible temperature in
degree Celsius (°C)
> PS: Maximum permissible pressure in bar(g)
at room temperature
> BODY: Material grade of body/seat
retainer e.g. 1.4408, 1.0619 etc.
> DISC: Material grade of disc e.g. 1.4408
> STEM: Material grade of stem e.g. 1.4542
> SEAT: Material of seat e.g. R-PTFE
> SEAL: Material of stem seal e.g. PTFE
> YEAR MFD: Month and year of
manufacture MM/YY
3.2 The valves are also provided with a tag plate on
the actuator mounting flange with the following data
printed on it:
> F<XX>: Actuator mounting flange size as
per ISO 5211 e.g. F07
> <Y>: Breakaway torque in Nm at a
differential pressure of 3.5 bar (air or
nitrogen)
> <Z>: Maximum allowable stem torque in Nm
F 07 / 60 – 300 Nm
F <XX> / <Y> – <Z> Nm
Bray/McCannalok EN
Operation and Maintenance Manual
4
The Information contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its
proprietary nature without the express written permission of Bray International, Inc.
4.0 INSTALLATION
4.1 The Bray/McCannalok EN valve is designed
to be mounted between EN, DIN and JIS flanges.
When the valve is open, the disc will extend into
the pipe on both sides of the valve – further
on the body side than the seat retainer side of
the valve. Piping must be large enough to allow
the disc to clear the pipe. Table 1 shows the
minimum pipe ID allowable.
Table 1: MINIMUM INSIDE DIAMETER OF PIPE
WITH THE RECOMMENDED CLEARANCE
Valve
Size
Minimum Pipe ID (mm)
PN 10 PN 16 PN 25 PN 40
DN 65 60.0 60.0 60.0 60.0
DN 80 74. 5 74. 5 74. 5 74. 5
DN 100 96.0 96.0 96.0 96.0
DN 125 124.5 124.5 124.5 124.5
DN 150 152.5 152.5 1 47. 5 147. 5
DN 200 203.0 203.0 196.5 196.5
DN 250 253.5 253.5 244.0 24 4.0
DN 300 303.5 303. 5 290.5 290.5
DN 350 333.0 333.0 333.0 333.0
DN 400 376.5 376.5 376. 5 376.5
If handle or actuator has been removed do not
rotate disc beyond full open or closed position
– this could cause damage to sealing surfaces.
NOTE:
Bray/McCannalok EN valves are equipped with
external travel stops to prevent disc over-travel. The valve
is opened by turning counter clockwise, closed by turning
clockwise. The double “D” flats or keyway at the top of the
stem is parallel to the disc edge.
NOTICE
For maximum service life, install the valve with
the seat retainer upstream. Positive shutoff will
be obtained with the valve in either position;
however, installation with the seat retainer
upstream will give longer service life, especially
in erosive services.
4.2 With the disc in closed position, carefully
center valve between flanges. Guide holes
(wafer-type valve) or tapped holes (lug-type
valves) to match pipe flanges and assist in
positive alignment.
4.3 Flange gaskets are not generally included
in the scope of supply of Bray/McCannalok
EN valves. Flange gaskets should conform to
EN1514-1 flat seal with form IBC or form FF.
4.4 The standard lug-type valve can be used in
end of line service (downstream dismantling)
only in one direction. The seat retainer side of
the valve should be mounted upstream.
UPSTREAM
FLOW
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