AMOT B User manual

Doc No: OMMB00010 Revision: 7 –Mar 2014
Model B Valve –
Thermostatic valve for
diverting and mixing
applications
Installation, Operation
and Maintenance Manual

2
Contents
Revision: 7 –Mar 2014 OMMB00010
Section 1 Table of Contents
Section 1 Table of Contents................................................................ 2
Section 2 Introduction ....................................................................... 3
2.1 Scope ....................................................................................... 3
2.2 Safety....................................................................................... 3
2.3 Product support.......................................................................... 3
2.4 Typographical conventions........................................................... 4
Section 3 Description ........................................................................ 5
3.1 Overview................................................................................... 5
3.1.1 Manual override.................................................................. 5
3.2 Features.................................................................................... 5
3.3 Identification of Model Number..................................................... 6
Section 4 Use within the European Union (EU).....................................10
4.1 Pressure Equipment Directive (P.E.D.) .........................................10
4.2 Hazardous Area Directive (A.T.E.X.).............................................11
4.3 Machinery Directive ...................................................................13
Section 5 Installation........................................................................14
5.1 Installing the valve ....................................................................14
5.1.1 Before starting installation ..................................................14
5.1.2 Mounting the Valve in the Pipe ............................................14
5.1.3 Start up............................................................................15
Section 6 Operation .........................................................................16
6.1 Operation .................................................................................16
6.1.1 Diverting applications (controls outlet temp from load source).17
6.1.2 Mixing applications (controls inlet temp to load source) ..........17
6.1.3 Manual override (if fitted) ...................................................18
Section 7 Maintenance......................................................................19
7.1 Dismantling the valve ................................................................19
7.2 Assembling the valve .................................................................20
7.2.1 User maintenance parts ......................................................21
Section 8 Trouble Shooting ...............................................................23
8.1 System temperature too cold ......................................................23
8.2 System temperature too hot:......................................................23
Section 9 Technical Specification........................................................24
9.1 General valve specification .........................................................24
9.1.1 Materials...........................................................................24
9.1.2 Maximum working pressure (bar) ........................................24
9.1.3 Valve handling...................................................................24
9.1.4 Storage ............................................................................25

3
Introduction
Doc No: OMMB00010 Revision: 7 –Mar 2014
Section 2 Introduction
2.1 Scope
This manual details the installation, operation and maintenance of the
AMOT Model B Valve range.
2.2 Safety
Certain operations within this manual are potentially hazardous and
could cause injury to personnel or damage to equipment if the
instructions are not carried exactly as described. Where a significant,
potential hazard exists, the following text appears immediately before
steps in the procedure that present a particular hazard:
WARNING
A Warning identifies a hazard that could cause injury to personnel.
The text of the warning describes the hazard and details the
precautions that must be applied before the next step of the
procedure is carried out.
CAUTION
A Caution identifies a hazard that could cause damage to equipment.
The text of the caution describes the hazard and details the
precautions that must be applied before the next step of the
procedure is carried out.
Note
A Note contains supplementary information that may be useful to the
Operator before the next step of the procedure is carried out.
2.3 Product support
All necessary settings and, where appropriate, alterations inside the
equipment are described in this Operating Manual. If any difficulties
arise during start-up, you are asked not to carry out any unauthorized
actions on the unit. You could endanger your rights under the
equipment warranty.
For spares and service support, call the telephone number listed on the
back cover of this Manual.

4
Introduction
Revision: 7 –Mar 2014 OMMB00010
2.4 Typographical conventions
Footnotes
Where space in the text or figures to place a note is restricted, a
footnote is used. They consist of two parts:
A mark indicating which part of the text or figure is affected by
the note. This takes the form of a superscript number eg. Abc
1
.
A note in smaller font at the bottom of the affected page
beginning with the corresponding number in the text (see
bottom of page):
1
This footnote applies to the part of the text or figure, marked with a superscript number 1.

5
Description
Doc No: OMMB00010 Revision: 7 –Mar 2014
Section 3 Description
3.1 Overview
The Model B Valve is designed to provide fully automatic, 3-way fluid
temperature control for diverting or mixing applications. Typical
applications include engine water jackets, lubricating oil cooling
systems, and mixing and diverting of fluids in process control and
industrial applications.
The thermostatic element (also referred to as ‘element’) in a Model B
valve is fully enclosed and factory set, providing tamper-proof
operation. For maintenance or to achieve a different set temperature
the element can be changed, although this requires removal of the
valve from its pipe work except the Model 8B Valve where the elements
are accessible whilst the valve is in position. Elements are available with
set temperatures from 13 to 116°C (55 to 240°F). Valves are available
in nine sizes, and a variety of materials to suit different fluids.
3.1.1 Manual override
As an option, Model B Valves can be fitted with a manual override,
which allows the operator to drive the unit towards the maximum
cooling position. On the larger sizes with multiple elements, each has its
own override. Manual override should only be used in emergencies;
however on valves with multiple elements sometimes one element can
be locked partially open to prevent the cooler from freezing and to
change operating temperature slightly.
3.2 Features
Typical applications
Lubricating oil temperature control.
Jacket water high temperature (HT).
Secondary water low temperature (LT).
Heat recovery.
Water saving applications.
Boiler inlet temperature control.
Co-generation, cooling towers.
Seawater cooling.
Key benefits
No external power source required –simple low cost installation.
No user setting needed –‘fit and forget’ solution.
Small No of parts –simple maintenance and low cost ownership.
Robust design capable of high vibration and shock applications

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Use in EU
Revision: 7 –Mar 2014 OMMB00010
3.3 Identification of Model Number
Example Code
4
BO
S
J
075
07
-0
0
-XXX
Code Description
Valve Size
Nominal Bore Size
Number of Elements
1 1/2
1 1/2 inch (DN40)
1
2
2 inch (DN50)
1
2 1/2
2 1/2 inch (DN65)
2
3
3 inch (DN80)
2
33
3 inch (DN80)
3
4
4 inch (DN100)
4
5
5 inch (DN125)
6
6
6 inch (DN150)
9
8
8 inch (DN200)
16
Valve Model
Model
BO
Screwed connections (1 1/2" and 2" only)
BO
Flanged (2 1/2" to 8" only)
BC
Flanged 'T' configuration (1 1/2" and 2" only)
BF
Flanged 'F' configuration (2" only)
BH
Screwed high pressure (1 1/2" and 2" only)
BR
Manual override (2" to 8 only")
BP
Special ST.ST with Manual Override (Refer OMM00144)
BQ
Special ST.ST B Valve (Refer OMM00144)
Valve Material
Valve Material
A
Aluminium (not 8 and 33)
B
Bronze (not 33)
C
Cast Iron*
D
Ductile iron
S
Steel (2", 2 1/2", 3" and 4" only)
R
Stainless steel (2", 2 1/2", 3" and 4" only)
Port Connection
Port Connection
A
Flanged PN6
B
Flanged PN10
C
Flanged PN16
F
Flanged ANSI 125 lb (cast iron, bronze and ductile only)
J
Flanged ANSI 150 lb (steel and stainless steel only)
H
Flanged ANSI 300 lb (steel and stainless steel only)
L
Flanged JIS 10k
P
Flanged JIS 5k
T
Threaded NPT (1 1/2" and 2BO only)
U
Threaded BSP (PL) (1 1/2" and 2BO only)
Control Temperature (°F)
Control Temperature (°F)
***
See Element Temperatures Table 2
Element Type
Element Type
**
See Element / Seal Types Table 3
Leakhole sizes
Leakhole sizes inches
0
None
A
1/2" Dia
B
1/4" Dia
C
3/8" Dia
D
1/8" Dia
E
1/16" Dia
F
3/32" Dia
G
3/16" Dia
H
5/16" Dia

7
Description
Doc No: OMMB00010 Revision: 7 –Mar 2014
Example Code
4
BO
S
J
075
07
-0
0
-XXX
Code Description
Leakhole Quantity
No. of elements with Leakhole
0
None
1
One (Max for 2" Size)
2
Two (Max for 2 1/2" & 3" sizes)
3
Three
4
Four (Max for 4" size)
5
Five
6
Six (Max for 5” size)
7
Seven
8
Eight
9
Nine (Max for 4" size)
Customer Special Requirements
Customer Special Requirements
-AA
Standard Product
***
Customer special code assigned
* AMOT reserves the right to substitute a ductile iron product in place of cast
iron to meet customer delivery requirements.
Table 1. –Model Identification
Other Flange connections are available. Contact AMOT for details.

8
Use in EU
Revision: 7 –Mar 2014 OMMB00010
Code
Control
Temp
Rated Range
Max Temp
Continuous
Max Temp
Short Period
Crack Open
Full Open
°C
°F
°C
°F
°C
°F
°C
°F
°C
°F
045
7.2
45
1
39
11
52
16
61
35
95
055
13
55
8
47
20
68
35
95
40
104
057
14
57
10
50
18
65
30
86
40
104
075
24
75
20
68
30
86
38
100
54.5
130
090
32
90
27
81
35
95
43
110
60
140
095
35
95
29
85
41
105
49
120
68
154
100
38
100
34
93
42
108
50
122
63
145
105
41
105
35
95
45
113
55
131
70
158
110
43
110
38
100
47
117
56
133
74
165
115
46
115
40
104
50
122
61
142
79
174
120
49
120
43
110
54
130
66
150
76.2
169
130
54
130
51
124
60
140
68
155
82
180
135
57
135
54
129
63
145
71
160
84
183
140
60
140
57
135
66
151
74
165
88
190
145
63
145
60
140
69
156
79
174
94
201
150
66
150
63
145
72
161
82
180
95
203
155
68
155
66
150
74
165
85
185
96
205
160
71
160
68
155
78
173
88
190
102
216
165
74
165
71
160
80
175
88
190
102
216
170
77
170
74
165
83
181
93
200
107
225
175
79
175
77
170
85
185
102
215
118
244
180
82
180
79
175
88
191
104
220
121
250
185
85
185
82
180
91
196
106
223
121
250
195
91
195
87
188
98
209
107
225
121
250
205
96
205
93
200
102
215
108
226
121
250
215
102
215
98
209
107
225
115
239
120
248
225
107
225
102
216
113
236
118
244
125
257
230
110
230
104
219
115
239
118
244
125
257
240
116
240
108
227
122
252
123
253.5
125
257
Table 2. –Element Temperatures

9
Description
Doc No: OMMB00010 Revision: 7 –Mar 2014
Code
Element and Valve Seal Material
01
1096X standard with Nitrile seals
02
1096P plated with Viton seals
03
1096X standard with Viton seals
05
6836S saltwater with Nitrile seals
07
2433X manual override with Nitrile seals
08
2433P manual override (plated) with Viton seals
09
6938S saltwater manual override with Nitrile seals
11
5566X higher over-temperature with Nitrile seals
17
7406X manual override higher over-temperature with Nitrile seals
20
5566X reduce stroke with Viton seals
44
1096X with Neoprene seals
45
1096P with Neoprene seals
53
2433X manual override with Viton seals
Table 3. –Element/Seal Types
Other Elements and Seals are available. Contact AMOT for details.

10
Use in the EU
Revision: 7 –Mar 2014 OMMB00010
Section 4 Use within the European Union (EU)
4.1 Pressure Equipment Directive (P.E.D.)
The pressure Equipment Directive (PED) 97/23/EC is applicable to the
design, manufacture and conformity of pressure equipment and
assemblies of pressure equipment with a maximum allowable pressure
greater than 0.5 bar.
In its design application of a thermostatic valve, this product is defined
as a Pressure Accessory under the terms of the EU Pressure Equipment
Directive (PED). If used with fluids defined as Group 2 in the Directive
(such as water and lubricating oil) the Model B Valve falls into the
Sound Engineering Practice (SEP) category. In this category units are
not required to be CE marked.
Some sizes of the Model B Valve are also rated to SEP for Group 1
fluids. This is indicated on the nameplate if applicable.
Users who are uncertain as to the applicability of the Directive should
contact the factory, particularly if using more hazardous (Group 1)
fluids.
The Model B Valve when suitable for use within the European
Community carries a nameplate that is divided into 3 areas, two of
which are applicable with reference to the Pressure Equipment Directive.
These areas are highlighted in Figure 4-1.
Figure 4-1
The PED service information area contains the following information.
Area containing
PED service
information
Area containing name and
address of manufacturer or
authorised representative
established within the EU