background image

Siemens Industry, Inc.

VE VVG Series

Technical Instructions

Document No. 155-112P25

VE VVG-1

Rev. 3 August, 2002

Electronic Two-way Valves
Normally Closed

Description

The VE VVG electronic two-way valves control the flow of water or glycol solutions. The
electronic actuator requires a 24 Vac supply and receives a 0 to 10 Vdc control signal
to control the 7/32-inch (5.5 mm) nominal stroke valve.

Features

  Maintenance free actuator with reversible motor.

 

Selector plug on actuator permits selection of linear or equal percentage flow
characteristics.

  Reduced seat diameter produces reduced C

v

 (K

vs

) in 1/2-inch valve bodies.

 

0 to 10 Vdc or 0 to 1000 ohms signal input.

  Position output signal 0 to 10 Vdc.

 

Available with union or sweat end connections (1/2-inch and 3/4-inch).

  Double O-ring packing with Teflon® wiper.

 

Manual override knob with indication of stroke allows for repositioning of the valve
in power-off conditions (SQS65U only).

 

Spring return closes flow port in power-off condition (SQS65.5U only).

Application

Use the VE VVG as a control and shutoff valve in small to medium HVAC installations
for hot water and chilled water applications. Use in closed circuits only.

NOTE:

This valve is not designed for steam applications. See

valve body

specifications

 for details.

Product Numbers
and Ordering
Information

Order the valve and actuator separately. See Table 1 for product information.

Summary of Contents for VVG44.15-0.4S

Page 1: ...vs in 1 2 inch valve bodies 0 to 10 Vdc or 0 to 1000 ohms signal input Position output signal 0 to 10 Vdc Available with union or sweat end connections 1 2 inch and 3 4 inch Double O ring packing with Teflon wiper Manual override knob with indication of stroke allows for repositioning of the valve in power off conditions SQS65U only Spring return closes flow port in power off condition SQS65 5U on...

Page 2: ...00 1 25 11 7 10 VVG44 25 10U SQS65U SQS65 5U 100 585 400 43 5 300 1 1 4 32 18 7 16 VVG44 32 16U SQS65U SQS65 5U 100 32 225 29 200 1 1 2 40 29 25 VVG44 40 25U SQS65U SQS65 5U 100 14 5 100 14 5 100 Max P Maximum recommended differential pressure for modulating service Specifications Actuator Power Requirements Operating Voltage 60 Hz 24 Vac 20 15 50 Hz 24 Vac 20 Power Consumption SQS65U 4 5 VA SQS65...

Page 3: ...ssure Differential for Modulating Service See Table 1 Close Off Pressure See Table 1 Agency Approvals UL UL873 C UL Certified to Canadian Standards CSA C22 2 No 24 93 Physical Characteristics Weight See Figure 6 Dimensions See Figure 6 Table 2 Maximum Water Capacity US Gallons per Minute Valve Pressure Differential psi Cv 1 Kvs 2 4 6 8 10 15 20 25 30 40 50 1 2 15 0 47 0 4 0 66 0 94 1 15 1 32 1 48 ...

Page 4: ...ector plug on the SQS actuator allows selection of linear or equal percentage flow characteristic The valve stroke is proportional to the control signal with linear flow selected See Figure 4 A zero voltage control signal returns the valve to its 0 position In the event of a power failure the SQS65U holds its last position and the SQS65 5U returns the valve to its fail safe position The position o...

Page 5: ...astic cap It may be needed during troubleshooting or for emergency valve operation CAUTION Dirt in the piping system can cause valve problems Before starting up and troubleshooting the valve make certain that the piping system is free of dirt and foreign particles It is recommended that a filter is placed upstream of the valve Figure 2 Mounting Positions Wiring WARNING On valve actuator wiring cod...

Page 6: ...set for the desired flow characteristic See Figure 4 Position Flow Characteristics A C Equal Percentage Factory Setting C B Linear Equal Percentage Linear O O A C B A C B Figure 4 Selector Plug Setting for Flow Characteristic V Volumetric flow 1 to 100 YU 0 to 10 Vdc control signal YR 0 to 1000 ohm resistance signal Troubleshooting Check wiring for appropriate connections Figure 3 Check selector p...

Page 7: ...hem to sbt_technical editor us sbt siemens com Document No 155 112P25 Printed in the U S A Page 7 Dimensions Figure 6 Dimensions for SQS65U Actuator and VVG 44 Valve Nominal Valve Size in mm A AA C Metric Thread D G H J M N P NPT for Union S Solder Cup for Sweat Valve Weight lbs kg 1 2 15 3 15 16 100 5 13 16 148 G 1 11 32 8 5 2 9 32 58 2 1 2 63 2 3 32 53 1 25 1 5 8 41 1 2 in 7 8 in 1 3 0 6 3 4 20 ...

Reviews: