Unassociated Document






Exhibit 4.8.61 -Self-Control Components - Two-Way Valve - VVG44 Series 
 













	
SIEMENS

	
4363







 


Two-Way Valve


 


External Thread Connection, PN16      VVG41...


 








 




	 	
External thread connection two-way valve, pressure grade PN16










	
  

	
l

	
Valve body: bronze Rg5








	
  

	
l

	
Nominal diameter: DN15...DN50mm (1⁄2”...2’’)








	
  

	
l

	
Flow rate: kvs 0.63...40m3/h








	
  

	
l

	
Stroke of valve handle: 20 mm








	
  

	
l

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








	
  

	
l

	
Accessories can be ordered independently













	
Purpose

	
Be applicable in heating system, domestic water system and heating, ventilating and air conditioning system as the control valve or safety shutoff valves that comply with DIN32730 Standard. Be applicable for both open system and closed system.







 




	
Media

	
The standard valves that adopt the galvanized valve handle seal material are applicable to the following media:











	  	
Cooling water

	  
	  	
Chilled water

	  
	  	
Low temperature hot water

	  
	  	
Domestic water

	  
	  	
High temperature hot water

	
-25...+130 ̈


	  	
Anti-freezing water 1)2)

	  
	  	
Saturated steam (the maximum 1.5 bar abs.)

	
 

	  
	  	
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).










	 	
 

	
The special refrigeration valve with electromagnetic actuator is applicable to refrigerant R.... See technical data 4700_4799.







 


Model overview


Standard edition



	
Model

	
DN

	
kVS


[m3/h]

	
Sv

	
 ̈Pvmax.


[kPa]


	
[mm]

	
[Inch]


	
VVG41.11


VVG41.12


VVG41.13


VVG41.14


VVG41.15

	
15/2.5


15/4


15/6


15/10


15

	
1⁄2”


1⁄2”


1⁄2”


1⁄2”


1⁄2”

	
0.63


1.0


1.6


2.5


4.0

	
>50

	
800


	
VVG41.20


VVG41.25


VVG41.32


VVG41.40


VVG41.50

	
20


25


32


40


50

	
3⁄4”


1


11⁄4”


11⁄2”


2”

	
6.3


10


16


25


40

	
>100













	  	 	
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 ̈, select ASZ6.5













	
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Order

	 	
Please describe the model.


	  	 	
For example: VVG41.25


	  	 	
The accessories must be ordered separately.







 




	
Transportation

	 	
The valve, actuator and the required accessories are packaged and supplied separately.


	  	 	  





Combining equipment



	
Valve

	
 


 


H100


[mm]

	
Actuator 1)

	
Accessories


 


 


Model


	
SQX...2)

	
SKD...

	
SKB


	
△Pmax

	
△Ps

	
△Pmax

	
△Ps

	
△Pmax

	
△Ps


	
[kPa]


	
VVG41.11


VVG41.12


VVG41.13


VVG41.14


VVG41.15

	
 


 


 


20

	
 


 


 


800

	
 


 


 


1600

	
 


 


 


800

	
 


 


 


1600

	
 


 


 


800

	
 


 


 


1600

	
 


ALG15


	
VVG41.20


VVG41.25


VVG41.32


VVG41.40


VVG41.50

	
ALG20


ALG25


ALG32


ALG40


ALG50


	
1500


	
600


400


250

	
850


500


300

	
1250


750


450


	
700


400


	
1200


	
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 office, if required.


	
 

	  







 



	
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Mechanical design


Valve profile

	


	
Pilot parabola valve plug and  valve handle are integrated.


 



Valve seat is attached to valve body through special seal material directly.















	





	
Note: the two-way seat valve cannot be used as three-way valve by loosening the screw nut and removing 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.







 



	
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Model selection




Flow rate graph
















△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) 100 kPa = 1 bar ≈10 mWG











 








Valve flow characteristics




 


 



	


	
 


Valve flow characteristics



0...30%  => linear



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











 



	
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Working pressure and temperature


 











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


	  	
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.


		
In the open system, it is possible that the valve plug may be locked due to the deposit of water scale (the valve handle cannot rise and fall normally). Thereby, such kind of application shall select SKB or SKC series of actuator with large driving force. Besides, the valve handle must be driven to operate regularly (at least two or three times a week).


	  	
Note: the valve upstream must be mounted with the filter.


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









 




	


	
When the medium temperature is lower than 0 ̈, 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.







 



	
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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


	
 

	  	  
	
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 hot 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, and used for -25...+130°C cooling water, chilled water, low temperature hot water, high temperature hot water, saturated steam and brine.


	  	
Applicable to VVG41...series of valve, pipe diameter DN15...DN50 (diameter of valve handle 10 mm) 4 284 8874 0








	
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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”.


	 	 







 




	
Technical data

	  	  	  	  
	
Functional parameter

	  	
PN (pressure) grade

	  	
PN16


	  	  	
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 working pressure

	  	
Within -25...+130, 1600KPa (16 bar), comply with ISO 7268 / EN 1333 /DIN 4747 / DIN3158 Standard


	  	  	
Flange connection

	  	  
	  	  	
Valve

	  	
G...B, comply with ISO 228/1 Standard


	  	  	
Accessories

	  	
Rp..., comply with ISO 7/1 Standard





	  	  	
Stroke

	  	
20mm


	  	  	  	  	  
	
Material

	  	
Valve body

	  	
Bronze G-CuSn5ZnPb (Rg5), in accordance with DIN 1705 Standard


	  	  	
Valve seat, plug and hanle

	  	
Stainless steel


	  	  	
Seal ring

	  	
Galvanized brass


	  	  	
Seal material

	  	
EPDM-O ring


	  	  	
Accessory ALG

	  	
Malleable iron


	  	  	
     


	
Dimension

	  	
Unit of all dimensions: mm









 



	
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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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