Argus
Ball valves
Service Manual
Types:
EK/71
EK/74
FK/75
FK/76
FK79
FK/79/F
FK/492
HK/35
MW/22
Experience In Motion
Table of contents
Designed Use ............................................................ 3
Application Areas...................................................................3
Design ...................................................................................3
Installation .............................................................................3
Impermissible Operating Procedures.....................................3
Maintenance ..........................................................................3
Safety Information..................................................... 3
Safety Standards....................................................... 5
Pressure-Temperature Diagrams ............................ 5
Delivery/Storage........................................................ 5
Check on Delivery..................................................................5
Storage of the Ball Valves .....................................................5
Transport ................................................................... 6
Installing the Flanged Connection .......................... 7
Installing the Ball Valve..........................................................7
Connecting the first Flange....................................................7
Connecting the second Flange ..............................................7
Installing the Welding Connection .......................... 8
Installing the Ball Valve..........................................................8
Welding the Connections.......................................................8
Start-up ...................................................................... 9
Actuating the Ball Valve.........................................................9
Open Position of the Ball Valves............................................9
Maintenance ............................................................ 10
Type EK/71..........................................................................10
Disassembly .....................................................................10
Exchanging the Stem Sealing...........................................10
Type FK/74 ..........................................................................11
Disassembly .....................................................................11
Exchanging the Stem Sealing...........................................11
Type FK/75 ..........................................................................12
Disassembly .....................................................................12
Exchanging the Stem Sealing...........................................12
Type FK/76 ..........................................................................13
Argus
Table of contents
Disassembly..................................................................... 13
Exchanging the Stem Sealing .......................................... 13
Type FK/78.......................................................................... 14
Disassembly..................................................................... 14
Exchanging the Stem Sealing .......................................... 14
Reassembly .....................................................................14
Type FK/79.......................................................................... 15
Disassembly..................................................................... 15
Exchanging the Stem Sealing .......................................... 15
Type FK/79/F ......................................................................16
Disassembly..................................................................... 16
Exchanging the Stem Sealing .......................................... 16
Type FK/492........................................................................ 17
Disassembly..................................................................... 17
Type HK/35 ......................................................................... 18
Disassembly..................................................................... 18
Exchanging the Stem Sealing .......................................... 18
Reassembly .....................................................................18
Type MW/22........................................................................ 19
Disassembly..................................................................... 19
Reassembly .....................................................................19
Accessories .............................................................20
Stuffing Box Assembly ........................................................ 20
Re-tensioning the Seal.....................................................20
Changing the Seals.......................................................... 20
Drain Plug ...........................................................................21
Drain and Ventilation Safety Plug........................................ 21
Supplementary Equipment.................................................. 22
Valve Actuators (Adjusting Range 90°) ............................ 22
Position Control Systems ................................................. 22
Gearbox with Hand Wheel ...............................................22
Position Limit Switch ........................................................22
Underfloor Fittings............................................................ 22
Metal Seals ......................................................................22
Safety Devices ................................................................. 22
Forced Shut-off Circuits.................................................... 22
Safety Control Circuits...................................................... 22
Heating Jackets................................................................ 22
Secondary Sealing Systems ............................................22
2
Designed Use
Series EK, FK and HK ball valves are used as shut-off devices in pipelines associated with processing,
handling and transporting liquid or gaseous as well as solid materials.
Application Areas
Chemical industries
Petrochemical industries
Gas industries
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Designed Use
Maintenance
Ball valves are maintenance-free. It is advisable, however, to actuate them at least once or twice a year.
Safety Information
Information
Please read the safety instructions carefully!
Design
Type EK ball valves have a unibody end-entry with an axial screw-type connection.
FK and HK ball valves have a two-piece split-body de-sign with flanged connection in between the two
halves.
Installation
The ball valves can be installed in pipelines by means of flanged connections or by welding.
Material requirements for welding must be ascertained from the manufacturer and must comply with
customer specifications.
The ball valves are designed for a normal load during service in pipelines. Under certain preconditions, the
ball valves can also be used for more severe operating conditions, although in such cases, the
manufacturer should be consulted in advance.
Impermissible Operating Procedures
To exclude any harmful effects on the seals, the substance to be used must comply with the ARGUS
technical specifications.
Consult ARGUS beforehand if necessary.
The combination of medium temperature and pressure are decisive factors for the choice of sealant
materials.
General instructions
Installation and maintenance may be performed only by trained, qualified personnel.
The media to be used must comply with the ARGUS technical specifications in order to exclude any harmful
effects on the seals. Contact ARGUS for further information.
Danger!
It is essential that the limit values are not exceeded; these values can be taken from ARGUS
diagrams (see Section
Warning!
The specified service pressures and temperatures must not be exceeded, even as individual
loads (see Chapter
Caution!
The user is responsible for ensuring compliance with the guidelines, regulations, safety standards
and laws applicable to the use of these ball valves (see Chapter
Danger!
Local safety regulations must be com-plied with for transport to the place of installation.
Make sure that the valves cannot tilt or slip in any way (see Chapter
Designed Use).
Designed Use).
Designed Use).
Transport).
Danger!
It is essential that the limit values are not exceeded; these values can be taken from ARGUS
diagrams.
Warning!
The specified service pressures and temperatures must not be exceeded, even as individual
loads.
Caution!
The user is responsible for ensuring compliance with the guidelines, regulations, safety standards
and laws applicable to the use of these ball valves.
Warning!
After installation, the pipeline and ball valve must be rinsed through before the ball valve is
actuated (see Chapter
Danger!
The local welding regulations and specifications must be complied with when carrying out welding
work (see Chapter
Installing the Flanged Connection).
Installing the Welding Connection).
3
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Safety Information
Caution!
Use temperature measuring strips to check that the temperature does not rise beyond the
permissible limits (100°C). The strips must be fitted to the connection near the soft inserts (see
Chapter
Caution!
The temperature measurement strip must be monitored constantly throughout the welding work
(see Chapter
Caution!
If any change of colour is noticed, the welding work must be interrupted immediately and the weld
allowed cooling (see Chapter
Caution!
Before start-up of the ball valve, the pipeline must be rinsed (see Chapter
Connection).
Warning!
Before start-up of the ball valve a leak test must be performed (see Chapter
Installing the Welding Connection).
Installing the Welding Connection).
Installing the Welding Connection).
Installing the Welding
Start-up).
Danger!
De-pressurize the ball valve by turning the ball at 90° before removing drain and ventilation plug
(see Chapter
Danger!
Care must be taken when hazardous materials are involved!
Risk of explosion, fire and acid burn! (see Chapter
Warning!
The plug may only be opened but not unscrewed by force (see Chapter
Safety Plug).
Warning!
Keep away from the outlet! Risk of injury! See Chapter
Warning!
The medium is ejected sideways! See Chapter
Drain Plug).
Drain Plug)
Drain and Ventilation
Drain and Ventilation Safety Plug.
Drain and Ventilation Safety Plug.
Warning!
The ball valve must be set to the OPEN position in order to avoid any damage (see Chapter
up).
Danger!
For safety reasons, the position of the wrench must clearly reflect the OPEN position of the ball
valve (see Chapter
Danger!
Do not disassemble the valve under pressure. Before disassembly operate valve so that possible
pressure behind the ball may escape (see Chapter
Caution!
Do not loosen the fixing nuts (see Chapter
Danger!
The ball valve must be depressurized! To release encaptured pressure, turn ball.
Take care of any hazardous materials that might escape! Risk of explosion, fire and acid burn!
(see Chapter
Start-up).
Maintenance).
Stuffing Box Assembly).
Stuffing Box Assembly)
Start-
4
Argus
Safety Standards
Safety Standards
Depending on the type and pressure rating, ARGUS ball valves are designed to conform with national and
international regulations, such as DIN 3357, AD and VdTÜV-Merkblätter, TRbF, TRGL, TRD, TRG, DVGW,
BS 5351, API6D and ANSI B16.34.
Design certifications and DIN-DVGW certificates are available. The acceptance of the fittings is carried out
according to DIN 3230 or specific customer requirements.
The reliability of fittings sealed with soft materials in case of fire, or even at temperatures above +600 °C is
confirmed by the Fire-Safe Certificate and can be verified using BS 6755and/or API 607.
Authorized testing institutions such as TÜV, German Lloyd, BS, Lloyds Register, DNV, Bureau Veritas, etc.,
carry out further tests on behalf of ARGUS or customers at regular intervals.
Compliance with Quality Assurance procedures under ISO 9001 was certified by DQS (German Society for
Quality Assurance).
Pressure-Temperature Diagrams
Delivery/Storage
Check on Delivery
Lieferschein
delivery note
bordereau de livraison
Bestellnummer:
order number:
numØro de commande:
0000-00-002
At delivery compare the order number on the delivery note with the number on the rating plate (see figure
above). In addition check that the correct item has been delivered and that the delivery is complete.
Complaints submitted at a later date cannot be accepted.
Storage of the Ball Valves
Ball valve must be set to OPEN.
Store ball valve in dry rooms.
Protect ball valve against dirt.
Protective caps must remain in position until the valves are finally installed.
FK76-01-001 0000-01-001 0000-01-002
5
Transport
Danger!
Local safety regulations must be complied with for transport to the place of installation.
Make sure that the valves cannot tilt or slip in any way (see figure below).
Argus
Transport
0000-00-002
The user is liable for any damage resulting from incorrect transport.
6
Argus
Installing the Flanged Connection
Installing the Flanged Connection
0003-00-002 0003-00-004 0003-00-001
Installing the Ball Valve
f Transport the ball valve safely to the installation site using suitable hoisting gear dimensioned in
accordance with the weight and size of the ball valve (Figure
f Remove protective caps (Figure
f Clean pipeline, seal and connecting flange (Figure
0003-00-004).
0003-00-001).
0003-00-002).
Connecting the first Flange
f Position the seal carefully.
f Secure the ball valve to the pipeline flange with a few bolts
f Check that the ball valve and gaskets are correctly located in relation to the pipeline flange.
f Check the alignment of the ball valve and pipeline (Figure
f Correct any discrepancies.
f Tighten the bolts crosswise (Figure
0005-00-001).
0003-000-003).
Connecting the second Flange
0003-000-003 0005-00-001 0003-00-005
f The second flange is installed in the same way as the first flange (Figure 0003-00-005).
f Tighten the bolts crosswise (Figure
f After installation, check for any leaks.
f After installation, the pipeline and ball valve must be rinsed through before the ball valve is actuated.
Warning!
After installation, the pipeline and ball valve must be rinsed through before the ball valve is
actuated.
0005-00-001).
7
Installing the Welding Connection
Installing the Ball Valve
Argus
Installing the Welding Connection
Danger!
The local welding regulations and specifications must be complied with when carrying out welding
work.
f Transport the ball valve to the installation site using suitable hoisting gear dimensioned in accordance
with the weight and size of the ball valve (Figure
0002-00-002).
0002-00-002 0002-00-004 0002-00-001
Welding the Connections
0003-00-003 0002-00-006 0003-00-005
f Remove the protective caps (Figure
f Clean the pipeline and connecting socket (Figure
f Remove any paint and rust around the weld area on the pipe and welded end of the ball valve.
Ensure that a bright metal surface is obtained.
f Check that the ball valve is correctly positioned and aligned with the pipeline.
The permissible tolerances and specifications in accordance with the agreed proposed use for the ball
valve must be complied with (Figure
Due to the short length of the welded ends, there is a risk that the soft inserts may be destroyed during the
welding work.
Caution!
Use temperature measuring strips to check that the temperature does not rise beyond the
permissible limits (100°C). The strips must be fitted to the connection near the soft inserts
(Figure
These temperature measurement strips are designed so that, when a type-dependent temperature is
reached, the colour irreversibly changes from white to black.
Caution!
The temperature measurement strip must be monitored constantly throughout the welding work.
Caution!
If any change of colour is noticed, the welding work must be interrupted immediately and the weld
allowed cooling.
The temperature measurement strips can be stored at temperatures up to + 35 °C for an unlimited period of
time and are resistant to oils, greases, water and steam.
f Connect the second socket in the same way as the first one, as described before
(Figure
0002-00-006).
0003-00-005).
0002-00-004).
0002-00-001).
0003-00-003).
8
f After installation, check for any leaks.
Caution!
Before start-up of the ball valve, the pipeline must be rinsed.
Start-up
0001-00-001 0001-00-002 0001-00-003
Argus
Start-up
Warning!
Before start-up of the ball valve a leak test must be performed.
Before start-up of the ball valve, the pipe-line must be tested under pressure, rinse and dried.
Warning!
The ball valve must be set to the OPEN position in order to avoid any damage.
The flange connections must be checked again after rinsing.
f If necessary, retighten the bolts.
Actuating the Ball Valve
Only 2 positions (open/closed position with 90 °C turn) are allowed to prevent any damage to the seals
(Figure
Ball valves are not control valves.
0001-00-001).
Open Position of the Ball Valves
The ball valves are open when the flat edges or visible notches on the stem are parallel to the direction of
flow (Figure
When using a valve wrench:
0001-00-002).
Danger!
For safety reasons, the position of the wrench must clearly reflect the OPEN position of the ball
valve (Figure
0001-00-003).
9
Maintenance
Type EK/71
Danger!
Do not disassemble the valve under pressure. Before disassembly operate valve so that possible
pressure behind the ball may escape.
Disassembly
f Stem (22) should be in CLOSED position.
f Remove snap ring (12) and stop disk (7).
f Detach screws (8, 9) with bush (5).
Argus
Maintenance
f Remove cover plate (6) with sealing ring (43), on DN 32-50 with bearing tape (34) and dowel pin, as
well as thrust ring (11) with sealing ring (35).
f Unscrew flange connection (2) with sealing ring (33) and O-ring (37) from body (1) using a special
ARGUS tool (eccentric).
f Remove ball (21) and sealing rings (31).
f Press stem (22) downwards and take it out of the body together with bushing (36) and disks (38).
f The O-ring (32) and disk (39) are removed upwards.
∗∗
Exchanging the Stem Sealing
Proceed as per Disassembly until
f Then exchange disk (39) and O-ring (32). When using a PTFE seal instead of O-ring (32), item (39)
can be left out.
Depending on the requirements, a partial disassembly of the ball valve may be sufficient.
f To reassemble, proceed in reverse order.
(∗∗)
.
EK71-02-001
10
Argus
Maintenance
Type FK/74
Danger!
Do not disassemble the valve under pressure. Before disassembly operate valve so that possible
pressure behind the ball may escape.
Disassembly
f Stem (31) should be in CLOSED position.
f Remove thrust ring (22) and stop disk (10).
f Detach hexagon nut (15) with ring (16).
f Remove cover plate (11) with dowel pins (7, 12), bearing tape (55) and sealing ring (42) as well as
thrust ring (18) with sealing ring (49).
f Unscrew flange connection (2) with sealing ring (51) and O-ring (52) from body (1) using a special
ARGUS tool (eccentric).
f Remove ball (30), spring washers (21) and annular piston (50).
f Press stem (31) downwards and take them out of body with thrust ring (44) and bushing (59).
f Remove ring (43), O-ring (47), compression spring (17) as well as rings (45) upwards.
∗∗
Exchanging the Stem Sealing
Proceed as per Disassembly until
(∗∗)
.
FK74-02-001
f Remove ring (43), O-ring (47) and replace.
When using a PTFE seal instead of the O-ring (47), item (43) can be left out.
Items (45) and (17) will then be replaced by a ring.
Depending on the requirements, a partial disassembly of the ball valve may be sufficient.
f To reassemble, proceed in reverse order.
11
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Maintenance
Type FK/75
Danger!
Do not disassemble the valve under pressure. Before disassembly operate valve so that possible
pressure behind the ball may escape.
Disassembly
f Stem (31) should be in CLOSED position.
f Remove snap ring (22) and stop disk (10).
f Unscrew hexagon screws (15).
f Take off cover plate (11) with wiper ring (41), bearing tape (55), sealing ring (42), thrust ring (18),
bearing tape (55), sealing ring (49) as well as dowel pins (7, 12).
f Unscrew hexagon nuts (20) from body (2).
f Remove body (2), O-ring (51) and ring (57) from body (1).
f Remove ball (30), bearing seats (13), annular piston (50) and Belleville washers (21).
f Press stem (31) downwards and take them out of the body together with bushing (59) and thrust ring
(44).
f Remove rings (43, 45), O-ring (47) and Belleville washer (17) upwards.
∗∗
Exchanging the Stem Sealing
Proceed as per Disassembly until
(∗∗)
.
FK75-02-001
f Take thrust ring (43) and O-ring (47) off.
f Ring (45) and compression spring (17) can be left in body.
When using a PTFE seal instead of O-ring (47), item (43) can be left out.
Items (45) and (17) will then be replaced by a fill ring.
Depending on the requirements, a partial disassembly of the ball valve may be sufficient.
f To reassemble, proceed in reverse order.
12
Argus
Maintenance
Type FK/76
Danger!
Do not disassemble the valve under pressure. Before disassembly operate valve so that possible
pressure behind the ball may escape.
Disassembly
f Stem (31) should be in CLOSED position.
f Remove snap ring (22) and stop disk (10).
f Unscrew hexagon screws (15). Take off plate (9) with wiper ring (41), thrust ring (18) with bearing tape
(55) and sealing ring (49) as well as dowel pins (7, 12).
f Unscrew cheese-head screws (16).
f Take off plate (11) with ring (43), O-ring (47), ring (45), Belleville spring washer (17), sealing ring (49),
ring (44) and stem (31), flange sleeve (59) and compression spring (56).
f Unscrew hexagon nuts (20) from body (2).
f Remove body (2), O-ring (51) and sealing ring (57) from body (1).
f Remove ball (30) with 4 round keys (34), counter-bearing (14) with flange sleeve (40), annular piston
(50) with optional O-ring (48) and Belleville spring washers (21).
∗∗
Exchanging the Stem Sealing
Proceed as per Disassembly until
(∗∗)
.
FK76-02-001
f Take off ring (43), O-ring (47) and exchange.
f Ring (45) and compression spring (17) can be left in cover plate.
When using a PTFE seal instead of O-ring (47), item (43) can be left out.
Items (45) and (17) will then be replaced by a fill ring.
Depending on the requirements, a partial disassembly of the ball valve may be sufficient.
f To reassemble, proceed in reverse order.
13
Argus
Maintenance
Type FK/78
Danger!
Do not disassemble the valve under pressure. Before disassembly operate valve so that possible
pressure behind the ball may escape.
Disassembly
f Stem (31) should be in CLOSED position (visible notch crosswise the direction of flow).
f Remove snap ring (22).
f Unscrew hexagon nuts (16) with lock washers (9).
f Take off plate (11) with wiper ring (53), bearing tape (38) and sealing ring (42), thrust ring (18) with
sealing ring (49) as well as straight pin (7).
f Press stem (31) with round keys (32) downwards and take out of the body.
f Unscrew hexagon nuts (20) from body (2).
f Remove body (2) O-ring (51) and sealing ring (57) from body (1).
f Remove ball (30), counter-bearings (14, 39) with wearing rings (37, 52) and bearing tapes (36, 40),
annular piston (50), Belleville spring washers (21, 17), intermediate ring (45), O-ring (47) and bearing
ring (43).
∗∗
Exchanging the Stem Sealing
Proceed as per Disassembly until
(∗∗)
.
FK78-02-001
f Take off ring (43), O-ring (47) and exchange.
f Depending on the actual requirements, a partial disassembly of the ball valve might be sufficient.
Reassembly
f Insert Belleville spring washer (21) and annular piston (50) in body (1).
f Place ball (30) as well as lower counter-bearing (14) with bearing tape (40) and wearing ring (52) in
body and turn to the OPEN position.
f After having assembled counter-bearing (39) with bearing tape (36) and wearing ring (37), insert stem
(31) with round keys (32) in body from below.
f To continue reassembly, proceed in reverse order as described in disassembly.
14
Argus
Maintenance
Type FK/79
Danger!
Do not disassemble the valve under pressure. Before disassembly operate valve so that possible
pressure behind the ball may escape.
Disassembly
f Stem (22) should be in CLOSED position.
f Remove snap ring (12) and stop ring (7). Unscrew cheese-head screws (8).
f Take off plate (6) with sealing ring (43) and bush (36) on DN 20 and 25 or bearing tape (34) and dowel
pin on DN 32-50 as well as thrust ring (11) with sealing ring (35).
f Unscrew hexagonal nuts (4) from body (2).
f Take off body (2), O-ring (37) and sealing ring (33) from body (1).
f Remove ball (21) and sealing rings (31).
f Press stem (22) downwards and take it out of the body together with bush (36) and washer (38).
f Removed O-ring (32) and washer (39) upwards.
∗∗
Exchanging the Stem Sealing
Proceed as per Disassembly until
(∗∗)
.
FK79-02-001
f Take off O-ring (32) and exchange bearing ring (39).
When using a PTFE seal instead of O-ring (32), item (39) can be left out.
Depending on the actual requirements, a partial disassembly of the ball valve might be sufficient.
f To reassemble, proceed in reverse order.
15
Argus
Maintenance
Type FK/79/F
TYP / TYPE / TYPE FK/79/F
Danger!
Do not disassemble the valve under pressure. Before disassembly operate valve so that possible
pressure behind the ball may escape.
Disassembly
f Stem (31) should be in CLOSED position.
f Remove snap ring (22) and stop ring (10).
f Unscrew cheese-head screws (15).
f Take off plate (11) with dowel pin (7), sealing ring (42), bearing tape (55), on DN 80 and 100 with wiper
∗∗
ring (41) as well as thrust ring (18) with sealing ring (49).
f Unscrew hexagon nuts (19).
f Take off body (2), O-ring (51) and sealing ring (57) from body (1), remove ball (30) and sealing
rings (50).
f Press stem (31) downwards and take it out of the body together with bush (59) and washer (44).
f Remove the seal (47) upwards.
Exchanging the Stem Sealing
Proceed as per Disassembly until
(∗∗)
.
FK79-02-002
f Replace seal (47).
Depending on the requirements, a partial disassembly of the ball valve may be sufficient.
f To reassemble, proceed in reverse order.
16
Argus
Maintenance
Type FK/492
Danger!
Do not disassemble the valve under pressure. Before disassembly operate valve so that possible
pressure behind the ball may escape.
Disassembly
f Stem (5) should be in CLOSED position.
f Unscrew hexagonal nuts (11) from body (2).
f Take off body (2) and seal (9) from body (1), remove ball (4) and sealing rings (3).
f Take off snap ring (17), stop ring (16), snap ring (14), ring (13) and sliding disk (12).
f Then press stem (5) with both O-rings (8), bush (6) and wearing ring (7) downwards and take them out
of body (1).
Depending on the requirements, a partial disassembly of the ball valve may be sufficient.
f To reassemble, proceed in reverse order.
FK492-02-001
17
Argus
Maintenance
Type HK/35
Danger!
Do not disassemble the valve under pressure. Before disassembly operate valve so that possible
pressure behind the ball may escape.
Disassembly
f Stem (22) should be in CLOSED position.
f Remove snap ring (12), stop ring (7), snap ring (18) and washer (19).
f Unscrew cheese-head screws (8).
f Take off plate (6) with sealing ring (43), bearing tape (34) and dowel pin (9) as well as thrust ring (11)
with sealing ring (35).
f Press stem (22) downwards completely.
f Unscrew hexagonal nuts (4) from body (2).
f Take off body (2), O-ring (37) and sealing ring (33) from body (1).
f Take ball (21) with shaft (22), counter-bearing (14), wearing ring (17) and bearing tape (15) out of body.
f Take out ring (16), bush (38), O-ring (32) and washer (39).
f Remove Belleville spring washer (53), rings (44), sealing rings (45), bearing rings (31) and sealing rings
(30) with O-rings (48) from body (1) and body (2).
∗∗
HK35-02-001
Exchanging the Stem Sealing
Proceed as per Disassembly until
f Exchange items (32) and (39).
When using a PTFE seal instead of O-ring (32), item (39) can be left out.
Depending on the actual requirements, a partial disassembly of the ball valve might be sufficient.
(∗∗)
.
Reassembly
f Place Belleville spring washers (53), rings (44), sealing rings (45), bearing rings (31) and sealing rings
(30) with O-rings (48) in body (1) and body (2).
f Install bush (38).
f Insert stem (22) in ball (21) from below and then insert them with counter-bearing (14), bearing ring
(15), wearing ring (17) and ring (16) in body (1).
f Place ball (21) in OPEN position and press it against the Belleville spring washers until stem (22) can
be pulled upwards into the body.
f Pay attention to the marks on stem (22) and ball (21).
f To continue reassembly, proceed in reverse order as described in disassembly..
18
Argus
Maintenance
Type MW/22
Danger!
Do not disassemble the valve under pressure. Before disassembly operate valve so that possible
pressure behind the ball may escape.
Disassembly
f Unscrew the connection pieces (13) with O-rings (33), annular pistons (34) and Belleville washers (11)
from body (1).
f Remove snap ring (22) and stop cap (3).
f Bend the safety plate (5) open and unscrew the screwed socket (4) together with wiper ring (12).
f Remove the safety plate (5).
f Undo the hexagon screws (8) with spring washers (9) and lift off the lid (2) with O-ring (31).
f Remove compression spring (10), pressure disk (7), O-ring (32) and bushing (6).
f Take the plug shaft (21) out of body (1).
Depending on the actual requirements, a partial disassembly of the ball valve might be sufficient.
Reassembly
MW22-02-001
f To reassemble, proceed in reverse order.
f When reassembling the connection piece (13), be sure to turn it approximately 1/4 of a revolution back
after retightening.
19
Accessories
Argus
Accessories
Stuffing Box Assembly
0104-03-001 0104-00-001 0104-00-002
For use at high temperatures, ball valves are fitted with an extension for the stem and a stuffing box
assembly (see sectional drawing,
0104-03-001).
Re-tensioning the Seal
The stuffing box seal can be re-tensioned if necessary.
f For this purpose, turn the nuts on the head-less pins clockwise to retighten them (Figure
Caution!
Do not loosen the fixing nuts (Figure
0104-03-001).
Changing the Seals
Danger!
The ball valve must be depressurized! To release pressure, turn ball.
Take care of any hazardous materials that might escape! Risk of explosion, fire and acid burn!
The seal is exhausted after being re-tensioned several times.
f Unscrew the nuts on the headless pins.
f Remove the stuffing box support.
f Lift the seals off carefully using a suitable tool
0104-00-001).
f Fit a new sealing assembly (Figure
f Replace the stuffing box support.
f Screw the nuts into position and tighten them uniformly.
0104-00-002).
20
Argus
Accessories
Drain Plug
0105-00-001 0105-00-002 0105-00-003
The drain plug is used to drain remaining media from the ball valve.
Danger!
De-pressurize the ball valve by turning the ball at 90° before removing drain and ventilation plug.
Drain and Ventilation Safety Plug
The safety plug is a special-purpose design to prevent the drain and ventilation plug from accidentally being
lost. In addition, it allows the drain and ventilation plugs to be closed immediately if the ball valve is still
accidentally pressurized (Figure
Installation
The complete safety plug is screwed into position using a chemical agent, such as Loctite.
Warning!
The plug may only be opened but not unscrewed by force (Figure
Warning!
Keep away from the outlet! Risk of injury!
Warning!
The medium is ejected sideways (Figure
0105-00-002).
0105-00-003).
0105-00-003)!
Danger!
Care must be taken when hazardous materials are involved!
Risk of explosion, fire and acid burn!
Place an appropriate vessel underneath the ball valve before opening the valve. The drain and ventilation
plug can easily be loosened and removed.
Damage can occur if it is not treated correctly (Figure
0105-00-001).
21
Supplementary Equipment
Argus
Accessories
Forced Shut-off Circuits
Forced shut-off circuits are used in processes and can be coded with keywords.
Valve Actuators (Adjusting Range 90°)
Valve actuators are used for ball valve automation. They are available in an electric or pneumatic/hydraulic
version.
Position Control Systems
In automatic operation the drives of the ball valves are controlled by position control systems. Such position
control systems are realized by process-controlled operations for in-stance.
Gearbox with Hand Wheel
Manually operated gears are used for large actuating torques. They are available in mechanical version.
Position Limit Switch
Position limit switches are used to indicate the valve position in controlled areas.
Underfloor Fittings
Underfloor fittings are necessary for installing ball valves in the ground.
Metal Seals
Safety Control Circuits
Safety control circuits, e.g. dead man’s button, are used to cause the valve to automatically reach the safety
position in processes.
Heating Jackets
Heating jackets are used to heat ball valves.
Secondary Sealing Systems
Secondary sealing systems are emergency sealings which restore the sealing effect of damaged seals by
injecting a plastic sealing compound.
0106-01-001
1 Seals with Soft Inserts
2 Metal Seals
Metal seals are used when the limits of use of seals with soft inserts are exceeded (see pressuretemperature diagram above), or for abrasive or aggressive substances. Please consult ARGUS in case of
need.
Safety Devices
Safety devices are used to lock the ball valves to prevent unauthorized use.
22
Argus
Ball valves
Flowserve Flow Control GmbH
Rudolf-Plank-Straße
D-76275 ETTLINGEN
Germany
Tel.: +49/72 43 103 -0
Fax: +49/72 43 103-222
E-Mail: argus@flowserve.com
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