AMOT B Series User manual

Doc No: OMMB00301 Revision: 1 – Nov 2019
Model B Valve
Thermostatic valve for
diverting and mixing
applications
Installation, Operation
and Maintenance Manual

Original instructions

3
Table of Contents
Doc No: OMMB00301 Revision: 1 – Nov 2019
Section 1
Table of Contents
Section 1 ......................................................................................... 3
Section 2 ......................................................................................... 5
2.1 Sco e ................................................................................... 5
2.2 Safety ................................................................................... 5
2.3 Product su ort ...................................................................... 5
2.4 End of Product Life ................................................................. 5
Section 3 ......................................................................................... 7
3.1 Overview ............................................................................... 7
3.1.1 Manual override .............................................................. 7
3.2 Features ................................................................................ 7
3.3 Valve Selection ...................................................................... 8
3.4 Identification of Model Number................................................. 8
Section 4 ........................................................................................13
4.1 Pressure Equi ment Directive (PED) ........................................13
4.2 Hazardous Areas ...................................................................14
4.2.1 Hazardous Area Directive (ATEX) .....................................14
4.2.2 S ecific Conditions of Use ...............................................16
4.3 Machinery Directive ...............................................................17
Section 5 ........................................................................................19
5.1 Installing the valve ................................................................19
5.1.1 Before starting installation ..............................................19
5.1.2 Mounting the Valve in the Pi e ........................................20
5.1.3 Start u ........................................................................20
Section 6 ........................................................................................21
6.1 O eration .............................................................................21
6.1.1 Diverting a lications .....................................................22
6.1.2 Mixing a lications .........................................................22
6.1.3 Manual override (if fitted) ...............................................23
Section 7 ........................................................................................25
7.1 Dismantling the valve ............................................................26
7.2 Reassembling the valve ..........................................................27
7.3 User maintenance arts .........................................................29
Section 8 ........................................................................................31
8.1 System tem erature too cold ..................................................31
8.2 System tem erature too hot ...................................................31
Section 9 ........................................................................................33
9.1 General valve s ecification .....................................................33
9.1.1 Materials .......................................................................33
9.1.2 Maximum working ressure (bar) ....................................33
9.1.3 Maximum working tem erature .......................................33
9.1.4 Valve handling ...............................................................34
9.1.5 Storage ........................................................................34

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Table of Contents
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5
Introduction
Doc No: OMMB00301 Revision: 1 – Nov 2019
Section
Introduction
.1 Scope
This manual details the installation, o eration and maintenance of
the AMOT Model B Valve range.
. Safety
Certain o erations within this manual are otentially hazardous and
could cause injury to ersonnel or damage to equi ment if the
instructions are not carried exactly as described. Where a significant,
otential hazard exists, the following text a ears immediately
before ste s in the rocedure that resent a articular 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 su lementary information that may be useful to the
O erator before the next ste of the rocedure is carried out.
.3 Product support
All necessary settings and, where a ro riate, alterations inside the
equi ment are described in this O erating Manual. If any difficulties
arise during start-u , you are asked not to carry out any
unauthorized actions on the unit. You could endanger your rights
under the equi ment warranty.
For s ares and service su ort, call the tele hone number listed on
the back cover of this Manual.
.4 End of Product Life
For end of roduct life statement see AMOT website or follow link for
details (htt ://www.amot.com/customer-su ort/view).

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Introduction
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7
Descri tion
Doc No: OMMB00301 Revision: 1 – Nov 2019
Section 3
Description
3.1 Overview
The Model B Valve is designed to rovide fully automatic, 3-way fluid
tem erature control for diverting or mixing a lications. Ty ical
a lications include engine water jackets, lubricating oil cooling
systems, and mixing and diverting of fluids in rocess control and
industrial a lications.
The thermostatic element (also referred to as ‘element’) in a Model B
valve is fully enclosed and factory set, roviding tam er- roof
o eration. For maintenance or to achieve a different set tem erature
the element can be changed, although this requires removal of the
valve from its i e work exce t the Model 8B Valve where the
elements are accessible whilst the valve is in osition. Elements are
available with set tem eratures 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 o tion, Model B Valves can be fitted with a manual override,
which allows the o erator to drive the elements towards the
maximum cooling osition. On the larger sizes with multi le
elements, each has its own override. Manual override should only be
used in emergencies; however, on valves with multi le elements
sometimes one element can be locked artially o en to revent the
cooler from freezing and to change o erating tem erature slightly.
3. Features
Typical applications
•Lubricating oil tem erature control
•Jacket water high tem erature (HT)
•Secondary water low tem erature (LT)
•Heat recovery
•Water saving a lications
•Boiler inlet tem erature control
•Co-generation, cooling towers
•Tem erature mixing or diverting
•Engine and com ressor cooling system
Key benefits
•No external ower source required – sim le low cost
installation.
•No user setting needed – ‘fit and forget’ solution.
•Small No of arts – sim le maintenance and low cost
ownershi .
•Robust design ca able of high vibration and shock
a lications

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Descri tion
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3.3 Valve Selection
A wide range of valve sizes and materials of construction are available,
covering the a lications in Section 3.2. An AMOT B Valve datasheet
containing information on selection of the a ro riate valve ty e is
available, contact AMOT for a co y.
It is the res onsibility of the end user to ensure suitability of the valve
with its intended use. The valve, element, and seal materials in articular
should be carefully selected to ensure com atibility with the rocess fluid
and the installation.
For further hel in selecting the correct valve for the a lication, contact
AMOT (contact details available on the back cover of this manual).
3.4 Identification of Model Number
Example Code
4
B
O
S
J
075
07
-
0
0
-
XXX
Code Description
Valve Size
ominal Bore Size
umber of Elements
1 1/2
1 1/2
inch (DN
4
0)
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 (DN1
25
)
6
6
6 inch (DN1
50
)
9
8
8 inch (DN
200
)
16
Valve Model
Model
BO
S
crewed connections
(
1 1/2" and 2"
on y)
BO F anged (2 1/2" to 8" on y)
BC F anged 'T' configuration (1 1/2" and 2" on y)
BF F anged 'F' configuration (2" on y)
BH
Screwed high pressure (1 1/2" and 2" on y)
BR
Manua override (2" to 8
on y
")
BP
Specia ST.ST with Manua Override (
Contact AMOT for
detai )
BQ Specia ST.ST B Va ve (Contact AMOT for detai )
Valve Material
Valve Material
A A uminium (not 8 and 33)
B Bronze (not 33)
C
Cast Iron
*
D Ducti e iron
S Stee (2" to 8" on y)
R Stain ess stee (2" to 8" on y)
Port Connection
Port Connection
A F anged PN6
B F anged PN10
C
F anged PN16
F F anged ANSI 125 b (cast iron, bronze and ducti e on y)
J F anged ANSI 150 b (stee and stain ess stee on y)
H F anged ANSI 300 b (stee and stain ess stee on y)
L F anged JIS 10k
P F anged JIS 5k
T Threaded NPT (1 1/2" and 2BO on y)
U Threaded BSP (PL) (1 1/2" and 2BO on y)
Control Temperature (°F)
Control Temperature (°F)
***
See E ement
Temperatures
Tab e
2
…continued overleaf

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Descri tion
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Example Code
4
BO
S
J
075
07
-
0
0
-
XXX
Code Description
Element Type Element Type
**
See E ement / Sea
Types
Tab e
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
Leakhole Quantity
o. 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 specia code assigned
Table 1 - Model Identification
* AMOT reserves the right to substitute a ductile iron roduct in lace of
cast iron to meet customer delivery requirements.
Other Flange connections are available. Contact AMOT for details.

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Descri tion
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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

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Descri tion
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Code E ement and Va ve Sea Materia
01 1096X standard with Nitri e sea s
02 1096P p ated with Viton sea s
03 1096X standard with Viton sea s
05 6836S sa twater with Nitri e sea s
07 2433X manua override with Nitri e sea s
08 2433P manua override (p ated) with Viton sea s
09 6938S sa twater manua override with Nitri e sea s
11 5566X higher over-tem erature with Nitri e sea s
17 7406X manua override higher over-tem erature with Nitri e sea s
20 5566X reduce stroke with Viton sea s
53 2433X manua override with Viton sea s
Table 3 - Element/Seal Types
Other Elements and Seals are available. Contact AMOT for details.

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Descri tion
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13
Use within the Euro ean Union (EU)
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Section 4
Use within the European Union (EU)
4.1 Pressure Equipment Directive (PED)
The Pressure Equi ment Directive (PED) is a licable to the design,
manufacture and conformity of ressure equi ment and assemblies
of ressure equi ment with a maximum allowable ressure greater
than 0.5 bar.
In its design a lication of a thermostatic valve, this equi ment is
defined as a Pressure Accessory under the terms of the EU Pressure
Equi ment Directive (PED).
The Model B Valve, when suitable for use within the Euro ean
Community, carries a name late, an exam le of which is shown in
Figure 1. The name late contains the following information ertinent
to the Pressure Equi ment Directive requirements:
Figure 1 – B Valve Name late
Model An al hanumeric text identifier rinted onto the
name late that fully describes the ty e of
equi ment.
Serial No A unique serial number rinted on the name late to
allow traceability of manufacture.
Year The year in which the equi ment was manufactured
is rinted here.
** BAR MAX The maximum ressure that the equi ment is
ermitted to see in service (refer to Section 9.1.2 for
value).

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Use within the Euro ean Union (EU)
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Name and address
Equi ment com lying with the Pressure Equi ment
Directive must be marked with the name and
address of the manufacturer and where a ro riate,
of his authorised re resentative established with the
Euro ean Community.
Suitable for liquids to Groups 1 & and CE Marking
When used with liquids defined as Grou s 1 or 2, the
Model B Valve falls into the PED Sound Engineering
Practice (SEP) category. Note that 8” B Valves, 5” B
steel valves, 6”B steel valves and B Valves with
Class 300lb flanges (Port Connection “H” – See Table
1, Section 3.4) are only suitable for use with liquids
defined as Grou 2, and the name late is marked
accordingly for these versions. Units must not be CE
marked in the SEP category (although are CE
marked for com liance with the ATEX Directive (see
Section 4.2)).
Users who are uncertain as to the a licability of the Pressure
Equi ment Directive should contact AMOT, articularly if using more
hazardous (Grou 1) fluids.
4. Hazardous Areas
4. .1 Hazardous Area Directive (ATEX)
The ATEX Directive is a licable to all equi ment both electrical and
mechanical that is ut into service in a designated hazardous area.
The Model B Valve, as mechanical equi ment, has been assessed in
accordance with EN ISO 80079-36 and has been designated as Grou
II equi ment. Grou II equi ment is suitable for use in laces where
a otentially ex losive atmos here may be resent. Grou II
equi ment shall not be used underground in mines, or in the surface
installations of such mines that are susce tible to firedam or
combustible dust.
The Model B Valve has been assessed for use in laces designated as
containing hazardous gas; they shall not be used in laces
designated as containing hazardous dust.
The Model B Valve, when suitable for use within the Euro ean
Community, carries a name late, an exam le of which is shown in
Figure 1. The name late contains the following information ertinent
to the ATEX Hazardous Area Directive requirements:

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Use within the Euro ean Union (EU)
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Model An al hanumeric text identifier stam ed
onto the name late that fully describes the
ty e of equi ment.
Serial No A unique serial number stam ed on the
name late to allow traceability of
manufacture.
Year The year in which the equi ment was
manufactured is stam ed here.
Ex Symbol The EU Mark for hazardous area
a lication.
Equipment designation:
II Equi ment Grou (non-mining
a lications).
Equi ment Category (high rotection
level).
G Hazardous Area Ty e (hazardous gas
environments).
Ex Ex losion Protection.
h Protection of Non-Electrical Equi ment
IIC Gas Grou Subdivision (for Gas Grou
limitations).
T6…T3 Max surface tem (maximum surface
tem erature de ends not on the
equi ment itself but on the o erating
conditions, and a single tem erature
class cannot be marked by the
manufacturer).
Gb Equi ment Protection Level (EPL)
(High Protection Limit)
X S ecific Conditions of Use (S ecific
Conditions of Use a ly, including the
Ambient Tem erature Range below,
see Section 4.2.2).
CML 15ATEXT17 Confidential Technical File reference (c/o
Notified Body).
CE Marking All equi ment used in a hazardous area
under the ATEX Directive must be CE
marked. Mechanical equi ment in Grou II
Category 2 is self-assessed, and a
confidential Technical File lodged with a
Notified Body ( er Technical File ref.
above). Equi ment that is CE marked must
com ly with all relevant EU Directives. The

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Use within the Euro ean Union (EU)
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CE mark on the AMOT B Valve only
re resents com liance to the ATEX
Directive and not to other EU Directives.
Name and address Equi ment com lying with the Hazardous
Area Directive must be marked with the
name and address of the manufacturer and
where a ro riate, of his authorised
re resentative established with the
Euro ean Community.
For safe and trouble-free use within hazardous areas the instructions
within this O erating and Maintenance Manual must be strictly
adhered to.
The maximum tem erature and internal ressure that this equi ment
is ermitted to work at is contained within Section 9.1.
The conditions for safe installation and commissioning of this
equi ment are contained in Section 5.
The equi ment must be maintained in accordance with Section 7 and
between maintenance eriods it should be ke t clean in accordance
with Section 4.2.2.
Users who are uncertain as to the a licability of the ATEX Directive
should contact AMOT for further advice.
4. . Specific Conditions of Use
1. The equi ment is designed for use in an extended ambient
tem erature range of -20°C to +60°C.
2. The equi ment contains no heat generating arts and assumes the
tem erature of the fluid inside it, as denoted by the “T6…T3”
marking. The fluid tem erature must remain within the limit
s ecified in Section 9.1.3.
3. Cleaning of equi ment must only be com leted using a dam cloth
or anti-static cloth.
4. Process fluids ca able of generating ionising radiation (such as
radioactive substances) are not suitable for use with the equi ment.
5. The equi ment is not suitable for use with rocess fluids that could
cause exothermic reactions within the equi ment or with the
equi ment and its materials.

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Use within the Euro ean Union (EU)
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4.3 Machinery Directive
The Model B Valve su lied by AMOT is classified as a com onent.
The equi ment falls outside the sco e of the machinery directive.
Com onents are only intended to be incor orated into or assembled
with other machinery or equi ment thereby forming Machinery.
The AMOT B valve must not ut into service until the Final Machinery
into which it is to be incor orated has been declared in conformity
with the relevant rovisions of EU Machinery Directive 2006/42/EC
where a ro riate.

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Use within the Euro ean Union (EU)
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19
Installation
Doc No: OMMB00301 Revision: 1 – Nov 2019
Section 5
Installation
WARNING
The valve is heavy; refer to Section 9.1.4. The appropriate manual
handling precautions must be applied to avoid personnel injury.
5.1 Installing the valve
5.1.1 Before starting installation
1. U on recei t, the valve should be checked for damage
sustained in shi ing. All AMOT valves have name lates
attached, which are stam ed with the valve model number
and serial number.
2. Understand the intended use of the valve as described in
Section 3.
3. Before installation, ensure that the valve is suitable for the
ur ose, checking tem erature, ressure and material
arameters, and any s ecial a roval requirements (refer to
Section 3.3). Check that the intended i e fittings are
suitable for the a lication.
4. Check that the valve size has been selected in accordance
with the antici ated flow rate through the valve (refer to
Section 3.3). To maintain good tem erature regulation the
ressure dro across the valve should be in the 0.14 to 0.5
bar (2 to 7 si) range.
5. If the valve is to be fitted at a high oint in the system, the
system should be vented to revent tra ed air around the
tem erature elements.
6. For o timum tem erature regulation the system should be
designed so that the element is in the mid- osition under
nominal conditions. To achieve this, it may be necessary to
balance the fluid flow by inserting an orifice in the by- ass
circuit.
7. If a ro riate, read and understand the legal requirements
of installing the valve within the Euro ean Union as
described in Section 4.

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Installation
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5.1. Mounting the Valve in the Pipe
The valve may be mounted in any orientation; but should be ro erly
su orted and not subjected to excessive bending. Ensure the i e
flange connections are correctly aligned to avoid stressing the valve
body.
For the main flanged orts bolting and gaskets should com ly with
the relevant standard.
All relevant local regulations must also be observed.
5.1.3 Start up
U on installation and on start-u of the system, all arts of the
circuit should be closely monitored to ensure correct erformance. A
system in which the valve has been ro erly selected for the
antici ated flows should o erate very closely to the valve’s nominal
tem erature rating.
Water cooling systems will usually o erate at or slightly below the
nominal tem erature. Lubricating oils and most other higher viscosity
fluids will o erate at or slightly above the nominal tem erature.
In any system where the indicated tem eratures are more than
2.7°C (5°F) from the nominal tem erature, then an effort should
made to locate the cause.
Any system o erating at an indicated 5.5°C (10°F) or more from the
nominal antici ated tem eratures may well be malfunctioning and
the cause should be located and rectified immediately. See trouble-
shooting section for ossible causes.