Operating manual
Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
1
General ............................................................................................................................................................. 1
2 Safety Information ............................................................................................................................................ 2
3 Delivery, Completeness, Storage ...................................................................................................................... 3
4 Installation, Operation, Maintenance ............................................................................................................... 3
5 Additional Equipment ..................................................................................................................................... 15
1 General
1.1 Manufacturer
Albert Handtmann Armaturenfabrik GmbH & Co. KG
Arthur-Handtmann-Str. 11; D-88400 Biberach
Tel.: +49(0) 73 51/3 42-0; Fax: +49(0) 73 51/3 42-44 80
E-Mail: sales.fittings@handtmann.de
1.2 Proper application
Vacuum valves are used in the food, beverage, pharmaceutical and chemical industries.
They are suitable for the protection of tanks and other closed systems against negative
pressure.
During installation, operation and maintenance please pay attention to the generally
accepted safety regulations as well as to the operating instructions.
1.3 Misuse
Misuse is
Misuse is:
• Application in different operating conditions as intended for the specific type.
• Installation, operation and maintenance by unqualified staff.
• Any unauthorized modification of the valve or a valve component.
• On-observance of the operating instructions.
Any misuse will automatically lead to a loss of right to claim under guarantee as well as
any liability.
1.4 Duties of operator
The operator has to make sure that:
• The valve/component is operated properly and only in functional condition.
• The legal requirements are kept during operation and maintenance.
• Only sufficiently qualified and authorized staff maintain the valve/component.
• The staff responsible for operation and maintenance know and obey the
operating instructions and in particular the safety advice.
• The safety and warning signs remain on the valve/component and are
always legible.
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strictly have to be obeyed.
Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
2 Safety Information
Notice and Safety
The following safety advice is an addition to existing national regulations and laws for
accident prevention. Existing regulations and laws for accident prevention always have to
be adhered to. Pay attention to the specific regulations and laws in your country.
The safety advice does not take into account:
• Coincidences and events that may occur during assembly, operation and
maintenance.
• Local safety regulations in responsibility of the operator.
Basic safety advice
Requirements for a proper function of the valve/component:
• Proper transportation and storage
• Installation and setting into operation by authorized staff
• Operation according to these operating instructions – proper application
• Proper and regular maintenance
Warning – general dangers!
To avoid danger for health and life the following safety instructions
• Assembly and setting into operation only by qualified staff.
• Instruction and supervision by the operator.
• Keeping of technical and electrical data as specified in the operating instructions.
• Guarantee the electric safety of external devices.
• Keep legal regulations.
Non-observance may lead to the following dangers:
• Malfunction of the valve/component respectively of the plant.
• Danger for persons due to electrical, mechanical and chemical affects.
• Danger for the environment due to possible leakage of dangerous media.
WARNING
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Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
3 Delivery, Completeness, Storage
• Check the data of the delivery note for factual correctness and the material for
completeness. We regret that money cannot be refunded after purchase.
• Always check the material for transport damages. Possible damages have
to be informed immediately.
• Store the material in a dry place and if possible in its original packaging.
4 Installation, Operation, Maintenance
Important notice !
• Valve/component suitable for vertical installation.
• Valve opens at a negative pressure of 3-5 mbar (30-50 mm WC).
Due to the air flowing there is a pressure balance with the ambient pressure
The valve closes again by the spring pressure.
• For higher temperatures (> 40°C) use valve No. 12525 and 12551 with stainless
steel valve cone (1).
• To avoid mistakes during assembly/disassembly, pay attention to the operating
instructions respectively the type plate.
4.1 Assembly instructions
Execution with heating device:
• The heating insets may only be connected according to attached scheme.
Pay attention to the connecting voltage!
• Do not remove the heating inset from the flange during function test
(heating capacity). It may get damaged by overheating.
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Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
4.2 Operation
Type 12501
Construction with plastic cone DN 25 – DN 80
• Keep the valve clean.
• Lift the valve cone from time to time.
• Exchange the O-ring (2) carefully.
• Avoid any damages at the valve seat.
• Protect vacuum valves from any force influence from outside.
Any damage may affect the function.
• Admissible temperature: 40°C (plastic cone)
Fig. 1: with plastic valve cone
1 Valve cone
2 O-ring
3 Pressure ring
4 Pressure spring
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Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
Type 12525
Construction with stainless steel cone DN 25 – DN 80
• Keep the valve clean.
• Lift the valve cone from time to time.
• Exchange the O-ring (1) carefully.
• Avoid any damages at the valve seat.
• Protect vacuum valves from any force influence from outside.
Any damage may affect the function.
• Admissible temperature: max. 125°C.
Fig. 2: with stainless steel valve cone
1 O-ring
2 Wire snap ring
3 Pressure ring
4 Pressure spring
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Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
Type 12550
Construction with stainless steel cone DN 25
• Keep the valve clean.
• Lift the valve cone from time to time.
• Exchange the O-ring (1) carefully.
• Avoid any damages at the valve seat.
• Protect vacuum valves from any force influence from outside.
Any damage may affect the function.
• Admissible temperature: max. 125°C.
Fig. 3: with stainless steel valve cone and with splash guard cover
1 O-ring
2 Wire snap ring
3 Pressure ring
4 Pressure spring
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Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
Type 12551
Construction with stainless steel cone DN 40
• Keep the valve clean.
• Lift the valve cone from time to time.
• Exchange the O-ring (1) carefully.
• Avoid any damages at the valve seat.
• Protect vacuum valves from any force influence from outside.
Any damage may affect the function.
• Admissible temperature: max. 125°C.
Fig. 4: with stainless steel valve cone – DN 40
1 O-ring
2 Wire snap ring
3 Pressure ring
4 Pressure spring
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Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
Type 12555
Construction with stainless steel cone DN 25
• Keep the valve clean.
• Lift the valve cone from time to time.
• Exchange the O-ring (1) carefully.
• Avoid any damages at the valve seat.
• Protect vacuum valves from any force influence from outside.
Any damage may affect the function.
• Admissible temperature: max. 125°C.
Fig. 5: with stainless steel valve cone – DN 25
1 Wire snap ring
2 O-ring
3 Pressure ring
4 Pressure spring
5 O-ring
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ATTENTION
Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
4.3 Maintenance
– The maintenance should be executed at regular intervals of min. every year.
Depending on the operating conditions of the valves, these intervals may be
shorter.
– During maintenance pay attention to the assembly and safety instructions.
– Any maintenance work may be carried out only in a depressurized system.
In case of spare parts orders please inform us the order №.
Gasket material EPDM
Type 12501
Prior to assembly of the plastic valve cone (1) heat it up in warm water to approx. 40° C.
Thus it will get the necessary elasticity.
Note
During assembly / disassembly, please consider that the inner diameter of the pressure
ring is smaller.
Disassembly: Press ring (3) against housing.
Assembly: Pull ring (3) from housing to the outside on star.
Fig. 6: Disassembly Assembly
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Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
Type 12525/12550
• Screw the valve with the coupling nut on a threaded coupling (5). Fix the valve cone
with a plastic auxiliary assembly device and a round plate.
• Press the pressure ring (3) against spring tension and dismount the wire snap
ring (2).
• Dismount the valve cone and exchange the o-ring (1).
• Assembly in reversed order.
• Wire snap ring (2) has to be completely in its final position in the pressure ring (3).
Fig. 7: Schematic representation Type 12525/12550
1 O-ring
2 Wire snap ring
3 Pressure ring
4 Pressure spring
5 Threaded coupling
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Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
Type 12551 / 12555
• Unscrew valve with APV flange from the flange. Fix the valve cone with a plastic
auxiliary assembly device and a round plate.
• Remove cover, only for type 12555
• Press the pressure ring (3) against spring tension and dismount the wire snap
ring (2).
• Dismount the valve cone and exchange the o-ring (1).
• Assembly in reversed order.
• Wire snap ring (2) has to be completely in its final position in the pressure ring (3).
Fig. 8: Schematic representation
Type 12551 Type 12555
1 O-ring 1 Wire snap ring
2 Wire snap ring 2 O-ring
3 Pressure ring 3 Pressure ring
4 Pressure spring 4 Pressure spring
5 O-ring
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Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
4.4 Seals
12501 12525 12550
12551 12555
12501 12525 12550 12551 12555
10 Valve cone
20 O-ring
30 Pressure ring
40 Pressure spring
10 Wire snap ring
20 O-ring
30 Pressure ring
40 Pressure spring
10 Wire snap ring
20 O-ring
30 Pressure ring
40 Pressure spring
10 Wire snap ring
20 O-ring
30 Pressure ring
40 Pressure spring
50 O-ring
10 Wire snap ring
20 O-ring
30 Pressure ring
40 Pressure spring
50 O-ring
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Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
4.5 Spare parts
DN 12501 12525 12550 12551 12555
25 012501.00025LE 012525.00025LE 012525.00025LE --- 012555.00025LE
32 012501.00032LE 012525.00032LE --- --- ---
40 012501.00040LE 012525.00040LE --- 012525.00040LE ---
50 012501.00050LE 012525.00050LE --- --- ---
65 012501.00065LE 012525.00065LE --- --- ---
80 012501.00080LE 012525.00080LE --- --- ---
LE – EPDM
4.6 Identification of components
All vacuum valves (VV) must be provided with permanent identification of the component.
– Standard vacuum valves are provided with a setting value (4 mbar) specified by us
(opening pressure range 3-5 mbar)
Explanation of the identification:
Numerical
code
AH VV xxxxx xxx yyy xx / xxxxx
AH VV xxxxx xxx yyy xx / xxxxx
Allocation 1 2 3 4 5 6
1 Manufacturer
2 Vacuum valve
3 Valve type
4 Nominal width / DN [mm]
5 Set negative pressure p [mbar]
6 Year of manufacture with manufacturing №
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Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
4.7 Performance diagram
1
Fig. 9: Fluid - Air
1 Flow capacity [Nm³/h]
2 Vacuum pressure [mbar-g]
Conversion: 1 mbar 10 mmWS 100 Pa 0.1 KPa
2
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control unit
Heating inset Ø 6,5 x 40
control unit
Heating inset Ø 6,5 x 40
Vacuum valve (spring loaded)
12501, 12525, 12550, 12551, 12555
5 Additional Equipment
5.1 Heating insets
Heating insets
DN
32-80 11 125E23 24 11.5 2* 24 23 105373
25 11 125E29 24 23 1* 24 23 105373
*Heating insets are integrated in the relevant heating elements
Connection-
scheme №
Connection
voltage
Volt
Heating
capacity
Watt
Quantity
Rated power:
Volt Watt
Part №
Temperature
Temperature
Fig. 10: E23, DN 32 - DN 80 E29, DN 25
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