Azbil HLS, HLC, HSC, HTS, HAV User Manual
...
Control Valve
Model HLS_ _ _/HTS_ _ _/HPS_ _ _/HLC_ _ _/HSC_ _ _/HAV_ _ _
User's Manual
OM2-8113-0201
NOTICE
While this information is presented in good faith and believed to
be accurate,Azbil Corporation disclaims the implied warranties of
merchantability andfitness for a particular purpose and makes no
express warranties except asmay be stated in its written agreement with
and for its customer.
In no event is Azbil Corporation liable to anyone for any indirect,
special orconsequential damages. e information and specications in
this documentare subject to change without notice.
© 2012 - 2018 Azbil Corporation All Rights Reserved.
Table of Contents
Chapter 1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1-1. Scope 1-1
1-2. Major components of control valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-3. Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-4. Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Chapter 2. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2-1. Maximum lifting loads of eyebolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-1. Installing valve in process pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-1. Item to be checked after installation and before starting operation . . . . . . . . . . . . . . . . . . . . . 2-2
Chapter 3. Inspection and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Chapter 4. Disassembly and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4-1. Detaching actuator from valve body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2. Disassembly and assembly of valve body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-3. Disassembly and assembly of actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4-4. Disassembly and assembly of model PSA 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4-5. Disassembly and assembly of model HA2, HA3, or HA4 actuator . . . . . . . . . . . . . . . . . . . . . . . 4-19
4-6. Disassembly and assembly of model PSA6 actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-25
4-7. Disassembly and assembly actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
Chapter 5. Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Chapter 6. Direct/Reverse Action Type Conversion and Spring Range Change of Actuator 6-1
6-1. Direct/Reverse action change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6-2. Stroke and range spring change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Chapter 7. Instructions for Top Handwheel of Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
7-1. Model PSA1 actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7-1-1. Operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7-1-2. Disassembly and Assembly of Top Handwheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
7-2. Model HA2, HA3, or HA4 actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7-2-1. Operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7-2-2. Disassembly and assembly of top handwheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Chapter 8.
Instructions for Side Handwheel of Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8-1. Installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8-2. Operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8-3. Disassembly of side assembly of side handwheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
i
Chapter 9. Instructlons for Bellows Sealed Type of Control Valves . . . . . . . . . . . . . . . .9-1
9-1. Model HLS control valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
9-1-1. Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
9-1-2. Disassembly and assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
9-2. Model HTS control valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
9-2-1. Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
9-2-2. Disassembly and assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Chapter 10. Azbil Low Emission standard-compliant gland packing . . . . . . . . . . . . 10-1
10-1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
10-2. Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
10-3. Installation into the gland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
10-3-1. Preparation for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2
10-3-2. Start of installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-3
10-3-3. Retightening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6
10-4. Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-6
Chapter 11. Certified ISO 15848-1 compliant low emission gland packing . . . . . . 11-1
11-1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
11-2. Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
11-3. Starting Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
11-4. Assembling the parts of the gland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
11-4-1. Preparation for assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-3
11-4-2. Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5
11-5. Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-9
11-6. Application to existing control valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-13
11-7. Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-13
Chapter 12. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1
Chapter 13. Recommended Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1
ii
Chapter 1. General
1-1. Scope
This manual covers the instructions for the following Control Valves.
Model HLS : Small-port single-seated control valves
Model HLC : Small-port cage guide type single-single seated control valves
Model HTS : Top-guide single-seated control valve
Model HSC : Cage type single-seated control valve
Model HPS : Top-guide high-pressure single-seated control valves
Model HAV : Venturi throat type angle control 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
Model AVP 300/301/302/200/201/202 CM2-AVP300-2001 Electro-pneumatic positioner
Model AVP 303/203 CM2-AVP303-2001 Electro-pneumatic positioner
Model AVP 701/702 CM2-AVP702-2001 Smart valve positioner 700 series (HART)
Model AVP 703 CM2-AVP703-2001 Smart valve positioner 700 series
Type)
(F
OUNDATION
fieldbus)
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 SS2-8113-0200, -0210, .0300, -0310,
-0400, and -2600.)
1-3. Structures
The structures of typical control valves are shown is Figure 1-1 through Figure 1-3.
The valve body is connected to the bonnet with stud bolts and nuts. A gasket is (two gaskets
are) provided at the connection Chapter 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.
1-1
Figure 1-1A Small-Port Single Seated
Control Valve, Model HLS
(Direct Action Type)
Figure 1-1B Model HLC
Figure 1-2A Top-Guided Single Seated
Control Valve, Model HTS
Figure 1-3A Top-Guided High-Pressure
Single Seated Control Valve, Model HPS
Figure 1-2B Model HSC
Figure 1-3B Venturi-Throat-Type Angle
Control Valve, Model HAV
1-2
1-4. Nameplate
A nameplate as shown in Figure 1-4 is posted on each control valve. The nameplate indicates
the model number, valve size, pressure rating, trim material, date of manu.facture and other
major specifications of the control valve. Before installing the con.trol 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 an Azbil Corp. agent for replacement of parts or other
modification of the control valve.
Figure 1-4 Nameplate
1-3
1-4
Chapter 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 maxi.mum 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
PSA1
HA2
HA3
HA4
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.
2-1. 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 pro.cess pipe.
(2) Confirm that the direction of process fluid flow conforms with that of the arrow.head
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 pro.cess 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.
Load of Eyebolts
160 kg
160 kg
160 kg
220 kg
Weight of Actuator Alone
8 kg
16 kg
32 kg
68 kg
2-1
2-1. 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 tight.ening
torques are as follows:
(3) Tighten the packing flange nuts to prevent leak from the gland packing chapter. Standard
tightening torques are as shown in Table 2-2.
Table 2-2. Tightening Torques of Packing Flange Nuts
Unit: N•m{kgf/cm
2
}
Valve Stem
Diameter
(mm)
10
V PTFE
packing
PTFE Yarn
Packing
(P4519)
Expanded graphite Packing V PTFE + PTFE
P6610CH + P6528
P6610CH + M8590
T2200 + P6710CH (Type2)
Yarn Packing
PTFE + V7233
PTFE + TK2006
9 {90} 5 {50} 3 {30}
13 15 {150} 8 {80} 5 {50}
16 24 {240} 13 {130} 8 {80}
1 {8}
20 32 {320} 18 {180} 10 {100}
25 - - 28 {280} 15 {150}
30 66 {660} 36 {360} 20 {200}
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.
Table 2-3. Tightening Torques of packing Flange Nuts for PTFE yarn (Certified ISO
15848-1-compliant low-emission gland packing)
Model Actuator model Stem size Tightening torque
HLS,HLC
HTS,HSC
HA2
HA3
HA3
HA4
PSA6,DAP560
DAP1000(X)
10 mm 12 N·m
φ
13 mm 20 N·m
φ
16 mm 33 N·m
φ
20 mm 44 N·m
φ
30 mm 54 N·m
φ
40 mm 65 N·m
φ
Table 2-4. Tightening Torques of packing Flange Nuts for expanded graphite (Certified ISO
15848-1-compliant low-emission gland packing)
Model Actuator model Stem size Tightening torque
HLS,HLC
HTS,HSC
HA2
HA3
HA3
HA4
PSA6,DAP560
DAP1000(X)
10 mm 12 → 0 (loosening) → 8 N·m
φ
13 mm 20 → 0 (loosening) → 13 N·m
φ
16 mm 33 → 0 (loosening) → 22 N·m
φ
20 mm 44 → 0 (loosening) → 30 N·m
φ
30 mm 54 → 0 (loosening) → 36 N·m
φ
40 mm 85 → 0 (loosening) → 43 N·m
φ
2-2
Nut
Packing
Packing
Packing
Flange
V PTFE Packing
V PTFE
Packing
Bonnet
Blind
Plug
Stem
PTFE Yarn Packing Graphite + Expanded graphite
PTFE Yarn
Packing
Graphite
Packing
Lubricator
Graphite
Yarn
Packing
V PTFE + PTFE Yarn
Figure 2-1 Gland Section
(4) If the valve is provided with a lubricator as shown in Figure 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.)
2-3
Squeeze
Handwheel
G1/2
Screw
Lubricator
Figure 2-2 Lubricator (Class 600 or under)
Lubricating procedure
(a) prepare grease of the type indicated on the nameplate.
(b) Tightly close the lubricator handwheel.
(c) Remove the squeeze screw, apply grease, and set the squeeze screw.
(d) Loosen the lubricator handwheel and drive grease by turning the squeeze screw.
(e) Repeat the procedure of 0), (c) and (d) until turning of the squeeze screw becomes
heavier. Tightly close lubricator handwheel.
(5) Pressurizing valve, check that there is no leak from the gasket sections for connection
to the valve body and process pipe. If leak is found, tighten the nuts. (Especially when
the process f luid temperature is 400 or higher, tighten the nuts again after raising
temperature of the valve in order that it may serve for a longer period without requiring
immediate maintenance service.) Standard tightening torques are shown in Table 4-4,
Table 4-5 of Chapter 4.
(6) When raising temperature of a valve which is used for high temperature service, raise
temperature gradually (standard rate is 100 per hour) and do not operate the valve when
its temperature is being raised.
Figure 2-3 Lubricator for High Pressure Valve
(Class 600 or higher)
2-4
Chapter 3. Inspection and Maintenance
Inspect and service the actuator as follows:
(1) Tightening the gland:
Tighten the gland once in every 6 months or thereabout. The tightening procedure is as
given in Section 2-3-(3).
(2) Lubricating the gland:
Lubricating the gland once in every 6 months or thereabout. The lubricating procedure is
as given in Section 2-3-(4).
(3) Check for hunting of valve Position:
Refer to ''Troubleshooting.''
(4) Check for abnormal noise and vibration:
Refer to ''Troubleshooting.''
3-1
3-2
Chapter 4. Disassembly and Assembly
This Chapter covers the disassembly and assembly procedures of the actuator for its overhaul
or modification.
4-1. Detaching actuator from valve body
See Figure 4-7.
(1) Apply to the actuator an air pressure so that the valve position pointer is at a point of 10%
- 20% above the fully closed point.
(2) Loosen the clamping-bolts of the stem connector, remove the stem connector, and detach
the actuator stem from the valve stem.
(3) Remove the clamping-nut of the yoke.
(4) Raise the actuator to detach it from the valve body.
Precautions: For detaching the actuator from the valve body which is kept installed in the
process pipe, be sure to shut down the process for and release the process
pressure before detaching the actuator.
4-2. Disassembly and assembly of valve body
To disassemble or assemble the valve body, refer to Figure 4-1 through Figure 4-6 and proceed
as described below.
(For handling of the bellows sealed type (optional type) of valves, see .)
Disassembly procedure
(1) Loosen the hex nuts of the packing flange.
(2) Remove the hex nuts (1) of the bonnet (extension bonnet).
(3) Raise and detach the bonnet from the valve body.
Precautions: If the valve plug comes out together with the bonnet, remove the plug from the
bonnet by rotating the plug. When doing this, exercise care not to damage the
valve stem.
(4) Model HTS, HPS and HAV Valve
For Model HTS and HPS valve, remove the guide ring. The seat ring is fixed to the valve
body by threading. To remove the seat ring, special tools (optional) are nec.essary.
(Model HLS, HLC valves have no guide ring and in its stead the valve has a guide hushing
pressed in the bonnet.)
Inspection
Inspect the disassembled parts for damage. If any damage is found, replace the parts.
(When ordering parts, mention also the Prod. No. of the valve which is indicated on the
nameplate.)
(1) Do not re-use the removed gland packing. Use fresh packing when assembling the valve.
(2) Check that the seating surfaces of plug and seat ring are not damaged.
4-1
(3) Check that the gasket-contacting surfaces of valve body, bonnet and guide ring are not
damaged. Do not re-use the removed gasket. Use fresh gasket when assem.bling the valve.
(4) Check that the plug guide section, the stem, and the internal guiding sections of guide
bushing are not damaged..
Assembly procedure
• Model HLS, HLC
(1) Securely fix the seat ring onto the valve body with threads, using the special tools
(optional). For the tightening torque, see Table 4-1
(2) Set the plug on the seat ring. (Apply lubricant ''Neverseize" to the threaded sec.tions,
except those of the oil-inhibited valves.)
(3) Put the bonnet on the valve body and check that the bonnet is correctly mated with the
indented section of the valve body: Tighten the nuts uniformly, paying atten.tion so that
they are not tightened unevenly (tighten- alternately the ones located at symmetrical
positions). For the tightening torque, see Table 4-3.
(4) Insert the gland packing as shown in Figure 2-1.
Note: When yarn packing sheets are used, overlap sheets in such manner that their cut
ends are positioned alternately.
(5) Place the packing follower and packing Range, and tighten the nuts. For the tight.ening
torques, see Table 2-2
• Models HTS, HSC, HPS and HAV
(1) Securely fix the seat ring onto the valve body with threads, using the special tools
(optional). For the tightening torque, see Table 4-1 or Table 4-2.
(2) Set the plug on the seat ring. (Refer to the Disassembly Procedures.)
(3) Put a sheet of gasket on the valve body side and place the guide ring in a manner of
covering the plug. (Apply lubricant "Neverseize" to the gaskets, except those of the oilinhibited valves.)
(4) Put the gasket on the guide ring. (Apply lubricant "Neverseize" to the gaskets, except those
of the oil-inhibited valves.)
(5) Put the bonnet on the valve body and check that the bonnet is correctly mated with the
indented section of the valve body. Tighten the nuts uniformly, paying atten.tion so that
they are not tightened unevenly (tighten alternately the ones located at symmetrically
positions). For the tightening torque, see Table 4-3.
(6) Insert the gland packing as shown in Figure 2-1.
Note: When yarn packing sheets are used, overlap sheets in such manner that their cut
ends are positioned alternately.
(7) Place the packing follower and packing flange, and tighten the nuts. For the tight.ening
torques, see Table 2-2.
4-2
Table 4-1. Model HLS, HTS, HSC, HAV seated ring tightening torques
Size (in.) Torque (N·m{kgf-cm})
1-1/2 260 {2,600}
2 390 {3,900}
2-1/2 520 {5,200}
3 650 {6,500}
4 800 {8,000}
6 1200 {12,000}
8 1500 {15,000}
1, 3/4 180 {18,000}
Table 4-2. Model HPS seated ring tightening torques
Size (in.) ANSI Class Torque (N·m{kgf-cm})
1 900-2,500 250 {2,500}
1-1/2 900-2,500 310 {3,100}
2 900-2,500 570 {5,700}
3 900-1,500 1,100 {11,000}
3 2, 500 700 {7,000}
Table 4-3. Tightening torques of bonnet stud bolts
Bolt Torque (N·m{kgf-cm})
M12 60 {600}
M16 100 {1,000}
M20 150 {1,500}
M22 200 {2,000}
M24 250 {2,500}
M27 350 {3,500}
M30 500 {5,000}
M33 660 {6,600}
4-3
Table 4-4. Bonnet-body bolt size
Models Size (in.) Rating
ANSI, JPI 150# JIS 10K ANSI, JPI 300#,600#
JIS16K, 20K, 30K, 40K
HLS 1/2 to 3 M12*4 M12*4
1-1/2 M16*6 M16*8
2 M16*6 M16*10
2-1/2 M16*6 M20*8
HTS, HCB
3 M20*8 M22*10
4 M20*8 M22*12
6 M22*12 M30*3*12
8 M24*12 M33*3*12
4-4
H
Hex Nut (2)
Packing Flange Nut
Stud Bolt
ex Nut (1)
Packing
Valve Stem
Packing Flange
Packing Follower
Gland Packing
Bonnet
Guide Bushing
Gasket (1)
Valve Plug
Lubricator
Gasket (2)
Extension
Bonnet
Stud Bolt
Seat Ring
Valve Body
Figure 4-1-1 Normal Temperature Type Figure 4-1-2 High Temperature Type
(Extended Bonnet Type)
Figure 4-1 Model HLS Control Valves
4-5
Packing Flange Nut
H
V
e Body
Stud Bolt
ex Nut (1)
a lve Stem
Packing Flange
Packing Follower
Gland Packing
Bonnet
Gasket (1)
Valve Plug
Guide Bushing
Seat Ring
Stud Bolt
Valv
Figure 4-2 Model HLC Control Valves
4-6
Packing Flange Nut
Stud Bolt
Extension
Packing Flange
Packing Follower
Hex Nut (1)
Valve Stem
Gland Packing
Bonnet
Gasket (1)
Guide Ring
Guide Bushing
Gasket (2)
Valve Plug
Seat Ring
Bonnet
Valve Body
Figure 4-3-1 Normal temperature type Figure 4-3-2 High temperature type
(Extended bonnet type)
Figure 4-3 Model HTS Control Valves
4-7
Packing Flange
Packing Flange Nut
e Body
Stud Bolt
Gland Packing
Hex Nut (1)
Valve Stem
Packing Follower
Bonnet
Gasket (1)
Guide Ring
Gasket (2)
Stud Bolt
Valve Plug
Seat Ring
Valv
Figure 4-4 Model HSC Control Valves
4-8
Figure 4-5 Model HPS Control Valves
4-9
Paking Flange Nut
Packing Flange
H
e Body
Stud Bolt
ex Nut (1)
Valve Stem
Packing Follower
Gland Packing
Bonnet
Gasket (1)
Guide Ring
Gasket (2)
Valve Plug
Seat Ring
Stud Bolt
Valv
Figure 4-6 Model HAV Control Valves
4-10
4-3. Disassembly and assembly of actuator
e Clamping Nut
Normally the actuator requires no adjustment. However, it should be disassembled and
assembled when installing it on a valve body, when modifying its specifications, or when
replacing damaged parts. The disassembly and assembly procedure of the actuator for such
purposes are covered in Sections 4-4 and 4-5. To disassemble the actuator, refer to Figure 4-7
to Figure 4-21.
Pointer
Hex Bolt
Lock Nut
Stem Connector
Yok
Figure 4-7
When disassembling or assembling the actuator, keep it in the vertical attitude. For the
tightening torques of bolts and nuts, see Table 4-4, Table 4-5.
For the names of the parts, see Figure 4-13 and Figure 4-21.
4-11
Notes for Disassembly
(1) The nuts for the eyebolts are made of stainless steel. Discriminate these nuts from other
nuts when assembling the diaphragm case.
(2) It is recommendable to make locating marks on the top and bottom diaphragm cases
before disassembly. This will help you to find easily the air piping connector location.
(3) Store the removed parts in a clean place.
CAUTION
Never loosen or remove carelessly the bolts and nuts of the actuator. The actuator
employs powerful compressed springs and if you remove the bolts and nuts carelessly,
the springs may leap out causing hazards. When removing the bolts and nuts, be sure
to observe the instructions given for disassembly and assembly procedures of the
actuator and top handwheel.
4-12
4-4. Disassembly and assembly of model PSA 1
Disassembly procedure
A. Direct action model (see Figure 4-8)
(1) Disconnect the air piping and detach the accessories from the actuator.
(2) Remove the stem connector.
(3) Remove the clamping bolts (except the pair of eyebolts) from the diaphragm case.
(4) Alternatively and evenly loosen the pair of eyebolts. The initial setting of the springs is
achieved using these eyebolts.
(5) Removing the diaphragm case. Pull the actuator rod upward and out together with the
diaphragm.
(6) Take out the springs.
B. Reverse action model (see Figure 4-9)
(1) Disconnect the air piping and detach the accessories from the actuator
(2) Remove the stem connector.
(3) Remove the clamping bolts (except the pair of eyebolts) from the diaphragm case.
(4) Alternately and evenly loosen the pair of eyebolts. The initial setting of the springs is
achieved using the eyebolts.
(5) Remove the diaphragm case. Take on the springs.
(6) Pull the actuator rod upward and out together with the diaphragm.
4-13
Diaphragm Case (Top)
Bushing
Rain Cap
Connector
Diaphragm
Case (Top)
Eye Bolt
Hex Bolt
Stopper
Part
Eye Bolt
Hex Bolt
Hex Nut
Was her
Diaphragm
Retainer
Diaphragm
Diaphragm
Plate
Spring Plate
Hex Bolt
Rod
Spring
Diaphragm
Case (Bottom)
Hex Nut
Was her
Spring Plate
Spring
Diaphragm
Plate
Diaphragm
Diaphragm
Retainer
Rod
Hex Bolt
Diaphragm
Case (Bottom)
Seal Washer
Hex Nut
Dust Seal
Yoke
Hex Nut
Drive Screw
Name Plate
Scale Plate
Truss Screw
Stem
Connector
Hex Bolt
O-ring
Rod Packing
Bushing
Dust Seal
Yoke
Hex Bolt
Figure 4-8 Direct Action model PSA1D Figure 4-9 Reverse Action model PSA1R
Drive Screw
Name Plate
Scale Cap Plate
Tr uss Screw
Stem
4-14
Assembly
Before assembly, check the parts for scratches, damage, deformation, peeling paint or any
other abnormalities. To assemble the actuator, proceed as follows:
A. Direct action models
• See Figure 4-8.
(1) Secure the diaphragm case (bottom) with the four bolts to the yoke. At the same time, set
the air vent hole as in Figure 4-10. For model PSA1D actuator, secure the spring plate to
the diaphragm case and yoke.
(2) Fasten the spring place and install the springs onto the spring plate (see Figure 4-10).
(3) Insert the actuator rod (with diaphragm connected) into the bushing. Be careful to
prevent the bushing's inside surface or dust seal form being damaged by the threaded
section of the rod. If possible, cover the threaded section with adhesive tape.
(4) Rotate the actuator rod, locating the diaphragm plate stopper as shown in Figure 4-10.
(5) Place the top diaphragm case and secure it with the pair of eyebolts.
Note: Set the air pipe connection port to the location shown in Figure 4-10. Tighten
the pair of eyebolts uniformly and alternately. The initial setting of the springs is
completed by tightening these eyebolts.
(6) Clamp the diaphragm case with clamping bolts.
(7) Install the stem connector. Connect the air pipe to its connection port at the top
diaphragm case.
(8) After completing assembly, check the following:
• Apply air pressure of 500 kPa {5 kgf/cm
top diaphragm case, and check the diaphragm periphery for air leakage with soapy
water.
• Check that the actuator operates smoothly through to its full stroke by operating it as an
independent unit.
2
} through the air pipe connection port at the
CAUTION
Install packing for the rod and dustseal in the correct direction. Refer to Figure 4-8.
Figure 4-10 Direct Action Models Model PSA1D Actuator
4-15
B. Revers action models
(1) Secure the bottom diaphragm case with the four bolts to the yoke. At the same time, set
the air pipe connection port in the location shown in the Figure 4-11.
(2) Insert the actuator rod (with diaphragm connected) into the bushing. Be careful to
prevent the bushing 's inside surface or dust seal from being damaged by the threaded
section of the rod. If possible, cover the threaded section with adhesive tape.
(3) Rotate the actuator rod, locating its diaphragm plate stopper as shown in Figure 4-11.
(4) Fasten the spring plate and install the springs onto the spring plate. (see Figure 4-11).
(5) Place the top diaphragm case and secure it with the pair of eyebolts.
Note: Set the air vent hole to the location shown in Figure 4-11. Uniformly and alternately
tighten the eyebolts. The initial setting of the springs is completed by tightening
these eyebolts.
(6) Clamp the diaphragm case with clamping bolts.
(7) Install the stem connector.
(8) Install the stem cap onto the air vent port.
(9) Connect the air pipe to its connection port at the bottom diaphragm case.
(10) After completing of assembly, check the following.
• Apply air pressure of 500 kPa {5 kgf/cm
diaphragm case, and check the diaphragm periphery for air leakage with soapy water.
• Check that the actuator operates smoothly through to its full stroke by operating the
actuator as an independent unit.
2
}through the air pie connection port at the
CAUTION
Install packing for the rod and dustseal in the correct direction. Refer to Figure 4-9.
Figure 4-11 Reverse Action Model
Model PSA1R Actuator
4-16
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