avintos 33 Series Quick guide

Operating and safety instructions Mars ball valve
Version 1.0.0 Page 1 from 3
Operatingandsafetyinstructions
Marsballvalvesseries33,36,39,70,79,83,88,90,90D,99
1Safety instructions for the operator
1. The user must ensure that only authorised and trained persons wor on the valve.
2. Personnel charged with the installation and adjustment of the valves, must only use suitable tools and protective clothing
required for the place of operation.
3. The area where the valve is to be fitted must be clean and tidy.
4. To prevent injuries, the pipe must be depressurized, emptied and, if necessary, vented before fitting the valve.
5. Ma e sure that the pressure and temperature limits indicated on the ball valve rating plate correspond to, or are above, the
operational pressure and temperature conditions. The product documentation includes a pressure/temperature diagram.
6. No wor (assembly, dismantling) must be carried out on the valve while it is operational.
7. The safety regulations relating to the factory and the installation must be strictly adhered to during all wor on valves.
8. The valve must only be stored with the ball position fully open, and with protective end caps.
2Use for the purpose intended
The valve may only be used for shutting off or adjusting a flow. Media flowing through can be gas, liquid or solid matter in powder or
granulated form. The individual valves must be mar ed according to the regulations and guidelines. The maximum permitted operating
conditions (pressure, temperature) must be adhered to, in compliance with the applicable rules and regulations and the manufacturer’s
instructions. Where corrosive media are involved, the corrosion-resistance of the materials used in the valve must be observed.
3Pressure-temperature chart of the seat rings
4Pressure-temperature chart of the seat rings
Danger note: First depressurize the system! Remove air connections before dismantling. Dismantling must be carried out in accordance
with the usual safety regulations and safety goggles. Only hose assemblies tested in accordance with SN EN 12115 may be used.
1. Mar the position relative to the drive shaft to ensure correct assembly later on.
2. Remove the actuator.
3. Unscrew the end cap screws (pos. 18) evenly.
4. Remove the end caps (pos. 3).
5. Turn drive shaft (pos. 4) countercloc wise, thereby moving out piston (pos. 2) complete with sliding insert. Remove the piston.
6. Remove the circlips (pos. 10 and 22) on the upper and lower sides of the actuator.
7. Remove the drive shaft (pos. 4) downwards from the actuator housing. Ta e care that the outer teeth of the shaft do not
damage the acutator bore.
8. Remove the bearing bushes (pos. 6 and 8) together with the drive shaft.
9. Clean parts .

Operating and safety instructions Mars ball valve
Version 1.0.0 Page 2 from 3
10. Replace the O-rings and sliding bushings if necessary. (see parts list)
11. Reassemble the actuator in reverse order. (Lubricate parts)
Pos.
Description
Materials
Surface treatment
Pcs
.
1
Body
Extruded aluminium
gold anodized
1
2
Piston
Aluminium die casting
2
3
End
-
cap
Aluminium die casting
Epoxy
resin blac
2
4
Pinion
Carbon steel
chemically nic el
-
plated
1
5
Piston guide
Delrin
2
6
Lower pinion guide ring
Delrin
1
7
O
-
Ring
Nitril
1
8
Upper pinion guide ring
Delrin
1
9
O
-
Ring
Nitril
1
10
Circlip
Steel
chemically nic el
-
plated
1
11
Dis
tance ring
Nylon
1
12
Plug
Nitril
2
13
Springs
Spring steel
Cataphoresis
4
-
12
14
External adjusting screw
Steel
2
15
O
-
Ring
Nitril
2
16
Washer
Stainless steel
2
17
Stop nut
Stainless steel
2
18
Screw end cap
Stainless steel
8
19
O
-
Ring
Nitril
2
20
Piston guide ring
Delrin
2
21
Piston
O
-
Ring
Nitril
2
22
Circlip
anti
-
blow out
Steel
chemically nic el
-
plated
1
23
Washer
Stainless steel
8
24
Threaded cap
Stainless steel
1
5Adjusting the end-caps (Pos.14
1. Connect supply air to CLOSE connection and move actuator to CLOSE position.
2. While maintaining the air supply, loosen the loc nut of the stop screw OPEN and adjust the end stop. Turning in the stop screw
reduces the swivel range. Adjustment range: +/- 5°.
3. Tighten the loc nut again.
Note: Under no circumstances may the stop screws be unscrewed when the actuator is under pressure. After adjusting the end stops,
readjust the accessories mounted on top of the actuator (e.g. signal box, positioner).

Operating and safety instructions Mars ball valve
Version 1.0.0 Page 3 from 3
6General Informations
With standard function, i.e. cloc wise closing, an air impact of air connection A results in an opening movement and a closing movement of
air connection B.
For safety reasons never support the spring force of single-acting actuators with air pressure!
7Customer Service
For further information or technical advice, please contact:
avintos AG
Weidenweg 17
CH-4310 Rheinfelden / Switzerland
Phone: [phone]
[e-mail]
http://www.avintos.ch