Unassociated Document






Exhibit 4.8.59 -Self-Control Components - Two-Way Valve-VVF31  
 













	
SIEMENS

	  	
4320


	 	 	 	 
	  	
Two-Way Valve

	  	  
	 	 	 	 
	  	
Flange Connection, PN10

	  	
VVF31







 





 














 





	 	 
	 	Flange connection two-way valve, pressure grade PN10
	 	

l



	
Valve body: ductile cast iron GG-25


	 	



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Nominal diameter: DN25...150mm


	 	
l

	
Flow rate: kvs 5...300m3/h


	 	



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Stroke of valve handle: 20 or 40mm


	 	



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Can be mounted with the SQX..., SKD..., SKB...and SKC... series of actuator.







 



	 	 
	
Purpose

	
Be applicable in heating system and heating, ventilating and air conditioning system as the control valve or safety shutoff valve that comply with DIN32730 Standard.


	 	
Be only applicable for closed system.


	 	 	 
	
Media

	
The standard valves that adopt the standard seal are applicable to the following media:


	 	 	 
	 	
Chilled water

	 
	 	 	 
	 	
Low temperature hot water

	 
	 	 	 
	 	
High temperature hot water

	
-25...+130°C


	 	 	 
	 	
Anti-freezing water 1)2)

	 
	 	 	 
	 	
Brine 1)2)











 




	  
	
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1)

	
When the media temperature is lower than 0°C, ASZ6.5 valve handle heating element is needed to prevent the valve handle within sealing gland from freezing.







 



	
  

	
2)

	
Anti-freezing water and brine: the minimum temperature -10°C complies with DIN 3158 Standard (pressure vessel I) or the minimum temperature -25°C complies with DIN 3158 Standard (pressure vessel II).











 



Model overview


Standard edition




	
Model

	
DN



[mm]



	
kVS



[m3/h]



	  

Sv

	
△Pvmax.



[kPa]




	  	
 

	
 

	
 

	
 


	
VVF31.24

	
25/20

	
5

	
>50

	  
	
VVF31.25

	
25

	
7.5

	  	  
	
VVF31.39

	
40/32

	
12

	  	  
	
VVF31.40

	
40

	
19

	  	  
	
VVF31.50

	
50

	
31

	  	
100


	
VVF31.65

	
65

	
49

	  	  
	
VVF31.80

	
80

	
78

	
>100

	  
	
VVF31.90

	
100

	
124

	  	  
	
VVF31.91

	
125

	
200

	  	  
	
VVF31.92

	
150

	
300

	  	  









 



DN= nominal diameter


kVS = rated flow that conforms to VDI 2173 Standard


Sv = flow capacity that conforms to VDI 2173 Standard


△P vmax..= maximum allowable differential pressure between two ends of valves, when the valve handle reaches the maximum stroke (the valve is fully open)




 






	
Accessories

	
Electronic valve handle heating element, AC 24V; when the medium temperature is lower than 0°C, select ASZ6.5













	
Order

	
Please describe the model when ordering the purchase For example: VVF31.50













 



	  
	
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Transportation

	
The valve and actuator are packaged and supplied separately. There is no inverse flange and flange gasket when the valve is supplied.







 



Combining equipment



 




	
Valve

	
 


 


H100


[mm]

	
Actuator 1)


	
SQX...2)

	
SKD...

	
SKB...

	
SKC...


	
△Pmax

	
△Ps

	
△Pmax

	
△Ps

	
△Pmax

	
△Ps

	
△Pmax

	
△Ps


	
[kPa]


	
VVF31.24

	
 


 


 


20

	
 


 


 


100

	
1000

	
 


 


 


100

	
1000

	
 


 


 


100

	
 


 


 


1000

	  	  
	
VVF31.25

	  	  
	
VVF31.39

	
500

	
750

	  	  
	
VVF31.40

	  	  
	
VVF31.50

	
300


175


100

	
450


250


150

	  	  
	
VVF31.65

	
700


450

	  	  
	
VVF31.80

	
80

	  	  
	
VVF31.90

	
 


40

	  	  	  	  	  	  	
 


100

	
300


175


125


	
VVF31.91


	
VVF31.92


	
Technical data

	
4554

	
4561

	
4564















 




	
  

	
1)

	
Optional actuator:   ●     AC 24V/AC 230V power source, three-position control signal







 



●     AC 24V scale (position) control signal DC 0...10V or DC 4...20 mA


 




	 	
2)

	
△Pmax and △P values are applicable for SQX32.../SQX82...and SQX62 new actuator, and the delivery can be available from January, 1999.














	 	
H100     =

	
100% stroke of valve and actuator








	
  

	
△Pmax  =

	
maximum allowable differential pressure between both ends of valve, when the actuator can maintain normal operation within the whole stroke








	
  

	
△Ps       =

	
maximum allowable differential pressure (shut-off pressure) between both ends of valve, on the premise of ensuring the actuator can be closed safely











 



Pneumatic actuator  The pneumatic actuator can be ordered from the local company.



 



	  
	
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Mechanical design

	  	  	  	
Valve plug with pilot hole is connected with valve handle directly.


Valve seat is attached to valve body directly.


	

Valve body profile



	  
	  	  
	  	  
	  	  





 



	


	  	
Note: the two-way seat valve cannot be used as three-way valve by disassembling the blank flange at the bottom of valve.


	  	  	  
	
Disposal

	  	
Due to the use of different types of materials, before discarding, do disassemble the valves, and classify them in terms of different material types.


	 	 	 









 




Model selection


 




Flow rate graph


 






 




	 
	
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100 kPa =  1 bar ≈10 mWG





△Pvmax.   =  maximum allowable differential pressure between both ends of valve, when the actuator can maintain normal operation within the whole stroke





△Pv100   =  differential pressure between both ends of vale, when the valve is fully open and its flow is V100. Its unit is kPa or bar.





V100      =  flow. Its unit is m3/h (cubic meter per hour) or l/s (liter per second)


 




Valve flow characteristics










 





		  	
Valve flow characteristics



0...30%  => flow and stroke are in linear scale



30...100%=> comply with VDI/VDE2173 Standard, ngl=3















 



Operating pressure and temperature


 





 



The operating pressure range complies with ISO 7268 and EN 1333 Standards.


 



	 
	
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The operating temperature range (-25...+130°C) complies with DIN 4747 and DIN 3158 Standards.











	
  

	 	
 









 


Notices


 





	
Engineering

	
It is suggested that the valve be mounted on the return water pipe, because in the heating system, the temperature of return water pipe is relatively low. In this way, the service life of valve spool seal can be extended.













	 	
The water quality shall comply with VDI 2035 Standard.








	


	
It is suggested that in the closed system, the filter be mounted, so as to increase the operational reliability of valve.







 





	


	
When the medium temperature is lower than 0°C, select ASZ6.5 electronic valve handle heating element to prevent the valve spool within the sealing gland from freezing. For the sake of safety, the operating voltage of this heating element is designed AC 24V, and its power is 30 W.







 



	
Mounting

	
The valve and actuator can be assembled in the mounting position simply, independent of special tools and any adjustment.








	
 

	
The valve shall be attached with the Instruction for Mounting before leaving the factory.







 



Mounting position



 







 




	
Allowed

	  	  	
Forbidden                                  


	 	 	 	 
	
Direction of water flow

	  	  	
During the mounting, pay attention that the mark of water current direction on the valve shall be consistent with the


	  	  	  	  
	  	  	  	
actual water current direction.

	
	  	  	  	  
	
Debugging

		  	
Debug the valve only after the actuator has been mounted correctly.


	  	  	  	
Valve handle contracts: flow increases


	  	  	  	
Valve handle extends: flow decreases











 



	 
	
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Repair

		
When repairing the actuator, comply with the following sequences: first turn off the water pump and cut off the water pump power source; close the stop valve, drain the water within the water pipe in order to reduce the pressure within water pipe and cool the water pipe naturally; remove the electrical wiring from connection terminal. Before re-debugging the valve, correctly mount the actuator properly.











 




	
Seal of valve handle

	
When the water pipe has de-pressurized and is cooled fully, and the valve handle surface is in good condition, it is allowed to replace the seal of valve handle directly, without removing the valve body. If the valve handle has been damaged, replace the whole valve handle-valve plug assembly. Please contact the local office of Siemens Building Technologies.









 




	
Accessories

	  	  
	
Standard model

		
Used to replace EPDM-O ring, including copper seal gasket.


	  	
Applicable media of standard model: chilled water, low temperature hot water, high temperature hot water and brine.


	  	
Temperature range of media: -25...+130°C


	  	
 


Applicable to VVF31...series of valve, pipe diameter DN25...80 (diameter of valve handle 10 mm) 4 284 8806 0


	  	  	
Applicable to VVF31...series of valve, pipe diameter DN100...150 (diameter of valve handle 14 mm) 4 679 5629 0









 




	
Guarantee

	
The valves shall not be guaranteed if the actuator is manufactured the third manufacturer.








	 	 	
The technical data, including △Pmax, △Ps, leakage rate, noise index and lifetime are only applicable to the corresponding actuators of Siemens Building Technologies included in the “Model overview”.









 



	 
	
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Technical data

	  	  	  	  
	  	  	
Functional parameter

	  	
PN (pressure) grade

	  	
PN10


	  	  	
Valve flow characteristics

	  	  	  	  
	  	  	
0...30%

	  	
linear

	  	  
	  	  	
30...100%

	  	
ngl=3, comply with VDI / VDE 2173 Standard

	  	  
	  	  	
Leakage rate

	  	
kvs 0...0.02%, comply with VDI / VDE 2173 Standard

	  	  
	  	  	
Allowable operating pressure

	  	
Within -25...+130, 1000kPa (10 bar), comply with ISO 7268 / EN 1333 /DIN 4747 / DIN3158 Standard

	  	  
	  	  	
Flange connection

	  	
ISO 7005

	  	  
	  	  	
Stroke

	  	  	  	  
	  	  	
- DN25...80

	  	
20mm

	  	  
	  	  	
- DN100...150

	  	
40mm

	  	  
	
Material

	  	
Valve body

	  	
GG-25 complies with DIN EN 1561 Standard

	  	  
	  	  	
Valve handle

	  	
Stainless steel

	  	  
	  	  	
Valve plug

	  	  	  	  
	  	  	
DN25...65

	  	
Brass

	  	  
	  	  	
DN80...150

	  	
Bronze

	  	  
	  	  	
Seal ring

	  	  	  	  
	  	  	
Standard model

	  	
Brass

	  	  
	  	  	
Seal material

	  	
EPDM-O ring

	  	  
	 	 	 	 	 	 	 







 



Dimension


 







 



	 
	
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DN =

	
nominal diameter








	
H    =

	
total height of actuator plus minimum mounting space of mounting, connecting and operation, or the minimum distance required by maintenance to the ceiling or wall








	
H1  =

	
distance from the center line of water pipe to the mounting edge (upper edge) of actuator








	
H2  =

	
position when the valve is fully open (it means the valve handle extends completely)









 



	 
	
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