Azbil AMT User manual

Control Valves
Model: AMT
User’s Manual
CM2-AMT100-2001
AMT000001000P

Copyright, Notices and Trademarks
While this information is presented in good faith and believed to
be accurate, Azbil Corporation disclaims the implied warranties of
merchantability and fitness for a particular purpose and makes no
express warranties except as may be stated in its written agree-
ment with and for its customer.
In no event is Azbil Corporation liable to anyone for any indirect,
special or consequential damages. This information and speci-
fications in this document are subject to change without notice.
© 2001-2023 Azbil Corporation. All Rights Reserved.

Table of Contents
1. GENERAL..............................................................................................1
1.1 Scope ................................................................................................................................1
1.2 Major Components of Control Valves .............................................................................1
1.3 Structures..........................................................................................................................2
1.4 Nameplate.........................................................................................................................4
2. INSTALLATION .....................................................................................5
2.1 Maximum Lifting Loads of Eyebolts ...............................................................................5
2.2 Installing Valve in Process Pipe.......................................................................................5
2.3 Item to be Checked After Installation and Before Starting Operation.............................6
3. INSPECTION AND MAINTENANCE .....................................................8
4. DISASSEMBLY AND ASSEMBLY........................................................9
4.1 Detaching Actuator from Valve Body .............................................................................9
4.2 Disassembly and Assembly of Valve Body .....................................................................9
4.3 Disassembly and Assembly of Actuator ........................................................................16
4.4 Disassembly and assembly of model PSA 1 ..................................................................18
4.5 Disassembly and Assembly of Model HA2, HA3, or HA4 Actuator ............................24
5. ADJUSTMENT AND CALIBRATION ..................................................30
6. DIRECT/REVERSE ACTION TYPE CONVERSION AND SPRING
RANGE CHANGE OF ACTUATOR .....................................................33
6.1 Direct/Reverse Action Change.......................................................................................33
6.2 Stroke And Range Spring Change .................................................................................35
7. INSTRUCTIONS FOR TOP HANDWHEEL OF ACTUATOR..............37
7.1 Model PSA1 Actuator ....................................................................................................37
7.2 Model HA2, HA3, or HA4 Actuator..............................................................................41
8. INSTRUCTIONS FOR SIDE HANDWHEEL OF ACTUATOR.............48
8.1 Installation Procedure.....................................................................................................48
8.2 Operating Instructions ....................................................................................................48
8.3 Disassembly of Side Assembly of Side Handwheel ......................................................49
9. Mechanical stopper............................................................................51
9.1 Adjustment of MIN. stopper ..........................................................................................51
9.2 Adjustment of MAX. stopper.........................................................................................51
9.3 Adjustment of dual MIN. MAX. stopper .......................................................................52
10. TROUBLESHOOTING.......................................................................53
11. RECOMMENDED SPARE PARTS....................................................55

Azbil Corporation
Model: AMT, HDT - CV3000 Series Control Valves 1
1. GENERAL
1.1 Scope
This manual covers the instructions for the Three-way Control Valves.
Model AMT Mixing Valves and Model HDT Diverting Valves.
For the valve positioners, refer the following operators manuals.
• Model VPE OM2-8310-0410 Pneumatic valve positioner for small actuators
• Model HTP OM2-83 10-0200 Pneumatic valve positioner (Single Acting type)
• Model HEP 15, l6, l7 OM2-8313-0100 Electro-Pneumatic Valve Positioner
(Single Acting Type)
• Model AVP 300/301/302/200/201/202
CM2-AVP300-2001 Smart valve positioner
• Model AVP 303/203 CM2-AVP303-2001 Smart valve positioner
1.2 Major Components of Control Valves
Each control valve is comprised of two major components, namely, a valve body
and an actuator. Various combinations of valve body and actuator are available
to meet various type of uses with different valve sizes, pressure ratings, types of
connections, types of materials, and actuator sizes.
(For details of specifications, refer to Specification Sheets SS2-8113-4100.)

Azbil Corporation
Model: AMT, HDT - CV3000 Series Control Valves
2
1.3 Structures
The structures of typical CV3000 Series control valves are shown is Fig. 1-1 and 1-2.
The valve body is connected to the bonnet with stud bolts and nuts. Gaskets are
provided at the connection section to seal against the internal fluid or to let the valve
body make up a pressure vessel. The valve plug is supported by the guide ring and
cage, and driven by the actuator. The actuator has multiple springs and a diaphragm,
and converts the pneumatic control signal into a mechanical (positional) control
signal with which to position the valve plug.
In the illustrations, for mixing service, the left and bottom ports are inlets and the
right port is outlet. For diverting service, the right port is inlet.
1” Size Valve Body
1-1/2” and 2” Size Valve Body Valve Body 2-1/2” or More
No. Parts Name
1 Valve Stem
2 Stud Bolt
3 Nut
4 Packing Flange
5 Yoke Lock Nut
6 Bonnet
7 Stud Bolt
8 Nut
9 Lubricator
10 Lantern Ring
11 Packing
12 Valve Body
13 Nut
14 Stud Bolt
15 Tail Piece
16 Packing Follower
17 V-Packing Holder
18 V-PTFE Packing
19 V-Packing Retainer
20 V-Packing Spring
21 Blind Plug
22 Packing Ring
23 Gasket
24 Pin
25 Guide Bushing
26 Seat Ring
27 Valve Plug
28 Gasket
29 Seating Guide
30 Guide Ring
Fig. 1-1 Mixing Type Three-way Valve (AMT)

Azbil Corporation
Model: AMT, HDT - CV3000 Series Control Valves 3
No. Parts Name
1 Valve Stem
2 Stud Bolt
3 Nut
4 Packing Flange
5 Yoke Lock Nut
6 Bonnet
7 Stud Bolt
8 Nut
9 Lubricator
10 Lantern Ring
11 Packing
12 Valve Body
13 Nut
14 Stud Bolt
15 Tail Piece
16 Packing Follower
17 V-Packing Holder
18 V-PTFE Packing
19 V-Packing Retainer
20 V-Packing Spring
21 Blind Plug
22 Packing Ring
23 Gasket
24 Pin
25 Guide Bushing
26 Seat Ring
27 Valve Plug A
28 Gasket
29 Seating Guide
30 Guide Ring
31 Valve Plug B
32 Key
33 Lock
34 Nut
Fig. 1-2 Diverting Type Three-way Valve (HDT)

Azbil Corporation
Model: AMT, HDT - CV3000 Series Control Valves
4
1.4 Nameplate
A nameplate as shown in Fig. 1-3 is posted on each control valve. The nameplate
indicates the model number, valve size, pressure rating, trim material, date of
manufacture and other major specifications of the control valve. Before installing
the control valve, make sure that the specifications indicated on the nameplate
conform with the conditions of use. The nameplate indicate also the product number
(PROD.NO.) of the control valve. Please mention this number also when consulting
your Azbil Corporation agent for replacement of parts or other modification of the
control valve.
Fig. 1-3 Nameplate
Compliance with Regulations
This product complies with the directive below.
• Pressure Equipment Directive (PED) 2014/63/EU
Requirements for workers (installation, operation, maintenance)
To ensure safety, only specialists who are skilled in instrumentation work should
carry out the installation, operation, and maintenance of this device.

Azbil Corporation
Model: AMT, HDT - CV3000 Series Control Valves 5
2. INSTALLATION
2.1 Maximum Lifting Loads of Eyebolts
The diaphragm case has a pair of lifting eyebolts. These eyebolts primarily are for
lifting the actuator alone. When using the eyebolts for other purposes (such as lifting
an actuator bed to its valve body or other components), note that the allowable
maximum lifting loads of the eyebolts are as shown in the following table.
Table 2-1 Maximum Lifting Loads of Eyebolts
Actuator Model No.
Allowable Maximum
Lifting Load of Eyebolts
Weight of
Actuator Alone
PSA1 160kg 8kg
HA2 160kg 16kg
HA3 160kg 32kg
HA4 220kg 68kg
Note: The eyebolts may be used to lift the actuator together with its valve buy
(cast globe valve) of up to pressure rating “Class 600”. When doing this, be
extremely careful so that no shock or other abnormal force is applied to the
actuator or the valve body.
2.2 Installing Valve in Process Pipe
(1) Before installing the valve in the process pipe, remove foreign matter (such
as scales and welding chips) from both upstream and downstream sides of the
process pipe.
(2) Confirm that the direction of process fluid flow conforms with that of the
arrowhead mark provided on the valve body.
(3) Pay attention so that the pipe connection gaskets do not extrude into the process
pipe inside. Be sure to use gaskets made of material which is suitable for the
process fluid. The welding type of valve employ no gaskets.
(4) Pay attention so that no excessively large stress is conveyed from the process
pipe to the valve body. Uniformly tighten the bolts of the process pipe
connection flange. The high pressure type of valves have no flanges, since they
are connected to the process by welding.
(5) Before connecting the air pipes to the actuator and positioner, blow the pipes to
clean them.
(6) Do not install any heating or cooling provisions on the bonnet.

Azbil Corporation
Model: AMT, HDT - CV3000 Series Control Valves
6
2.3 Item to be Checked After Installation and Before Starting Operation
(1) Check that there is no leak from air piping.
(2) Check that the bolts and nuts of the diaphragm case are not loose. Standard
tightening torques are as follows:
For HA2, HA3 (M8) : 12 N.m {120 kg-cm}
For HA4 (M12) : 42 N.m {420 kg-cm}
(3) Tighten the packing flange nuts to prevent leak from the gland packing section.
Standard tightening torques are as shown in Table 2-2.
Table 2-2 Tightening Torques of Packing Flange Nuts
Valve Stem
Diameter
(mm)
Graphite Packing
(N.m {kgf-cm})
Metallic Filament Reinforced
Graphite Packing
(N.m {kgf-cm})
V PTFE Packing
(N.m {kgf-cm})
10 3 {30} 7 {70}
0.8 {8}
13 5 {50} 12 {120}
16 8 {80} 18 {180}
20 10 {100} 25 {250}
25 15 {150} 40 {400}
30 20 {200} 50 {500}
Note: The tightening torques mentioned in the above are only to give you reference
values. Note that tightening torques may vary depending on the type of
packing.
Graphite Yarn packing
Fig. 2-1 Gland Section
(4) If the valve is provided with a lubricator as shown in Fig. 2-2, check whether
the bonnet section has been lubricated or not. To do this, loosen the lubricator
handwheel and turn the squeeze screw. If the squeeze screw turn lightly, and
grease in the lubricating procedure mentioned below. (If the squeeze screw turns
heavily, this means that grease has been applied.)