VT-xP
Date of Issue: 20/02/2013
Issue Number: 5.3
Page 1 of 4
VT-xP
Terminal Unit Valves
Features:





Suitable for water or glycolic water
1½ million cycle U-cup packing cartridge
Maintenance free
High and low Kvs of each size
All metal movement, no plastic parts
Technical Overview
These terminal unit valves, are designed and provide a high quality long lasting solution for control of hot or
chilled water applications with up to a 50% glycol mix. They are suitable for fan coil units, small re-heaters and
re-coolers in temperature control systems.
They have replaceable interchangeable cartridges that can be changed without removing the valve from the line.
They are used in combination with the VT-24, VT-SR (2, 3-port valves only) and VT-TA range of actuators.
Tel: +44 (0) 1732 861200. - E-mail: [email protected]. - Web: www.sontay.com.
© 2012 Sontay Limited. All rights reserved
VT-xP
Date of Issue: 20/02/2013
Issue Number: 5.3
Page 2 of 4
Specification:
Media
Medium temperature
Turndown ratio
Nominal pressure
Maximum D pressure
Connections:
2,3-port VT-xPE
VT-2PI
VT-3PI
VT-4P
Stroke length:
2-Port
3-Port
4-Port
Materials:
Body
Stem
Packing
Disc/plunger
Leakage
Country of origin
Part Codes (continued):
Hot & cold water with up to
50% Glycol
0 to 120°C (32 to 248°F)
50:1
PN25
3.5bar (50.8psi)
½” BSP or ¾” BSP female
½” BSP or ¾” BSP male
½” male thread
15mm Conex® or similar
compression fitting kit (not
supplied)
4mm (0.16”)
2.8mm (0.11”)
up to 2.60kvs 2.8mm (0.11”)
3.00kvs
4mm (0.16”)
Low zinc bronze, alloy C84400
Stainless steel
Double EPDM
EPDM / brass
100% tight shut-off
Canada
Part Codes:
2-Port External Threaded c/w Unions:
VT-2PE-15-01
15mm (½”), kvs 0.43 (0.5Cv) Equal Percentage
VT-2PE-15-02
15mm (½”), kvs 0.86 (1.0Cv) Equal Percentage
VT-2PE-15-03
15mm (½”), kvs 1.30 (1.5Cv) Equal Percentage
VT-2PE-15-04
15mm (½”), kvs 1.72 (2.0Cv) Equal Percentage
VT-2PE-15-05
15mm (½”), kvs 2.15 (2.5Cv) Equal Percentage
VT-2PE-15-06
15mm (½”), kvs 2.58 (3.0Cv) Equal Percentage
VT-2PE-20-07
20mm (¾”), kvs 2.58 (3.0Cv) Equal Percentage
VT-2PE-20-08
20mm (¾”), kvs 3.87 (4.5Cv) Linear
3-Port External Threaded c/w Unions
(Diverting only):
VT-3PE-15-02
15mm (½”), kvs 0.86 (0.5Cv) Equal Percentage
VT-3PE-15-03
15mm (½”), kvs 1.72 (2.0Cv) Equal Percentage
VT-3PE-15-04
15mm (½”), kvs 2.58 (3.0Cv) Equal Percentage
VT-3PE-20-05
20mm (¾”), kvs 3.10 (3.5Cv) Linear
2-Port Internally Threaded c/w Unions:
VT-2PI-15-01
15mm (½”), kvs 0.43 (0.5Cv) Equal Percentage
VT-2PI-15-02
15mm (½”), kvs 0.86 (1.0Cv) Equal Percentage
VT-2PI-15-03
15mm (½”), kvs 1.30 (1.5Cv) Equal Percentage
VT-2PI-15-04
15mm (½”), kvs 1.72(2.0Cv) Equal Percentage
VT-2PI-15-05
15mm (½”), kvs 2.15 (2.5Cv) Equal Percentage
VT-2PI-15-06
15mm (½”), kvs 2.58 (3.0Cv) Equal Percentage
VT-2PI-20-07
20mm (¾”), kvs 2.58 (3.0Cv) Equal Percentage
VT-2PI-20-08
20mm (¾”), kvs 3.87 (4.5Cv) Linear
3-Port Internally Threaded (Diverting only):
VT-3PI-15-01
15mm (½”), kvs 0.86 (1.0Cv) Equal Percentage
VT-3PI-15-02
15mm (½”), kvs 1.72(2.0Cv) Equal Percentage
VT-3PI-15-03
15mm (½”), kvs 2.58 (3.0Cv) Equal Percentage
4-Port Compression valves (Diverting only):
VT-4P-15-01
15mm (½”), kvs 0.86 (1.0Cv) Linear
VT-4P-15-02
15mm (½”), kvs 1.70 (2.0Cv) Linear
VT-4P-15-03
15mm (½”), kvs 2.60 (3.0Cv) Linear
VT-4P-15-04
15mm (½”), kvs 3.00 (3.5Cv) Linear
Tel: +44 (0) 1732 861200. - E-mail: [email protected]. - Web: www.sontay.com.
© 2012 Sontay Limited. All rights reserved
VT-xP
Date of Issue: 20/02/2013
Issue Number: 5.3
Page 3 of 4
Installation:

Before mounting the valve be sure that the pipes are clean and free from swarf.

It is essential that all pipes are lined up squarely with the valve at each connection and are free from vibrations.

Install the valve so that the actuator will be mounted in a vertical or horizontal position but not upside down.

Leave sufficient clearance to allow the dismantling of the actuator from the valve body for maintenance purposes.
Piping Examples:
2-Way:
Valve installed on the supply side of the coil
Valve installed on the return side of the coil
VT-2P valves are normally open

Stem up
Valve open

Stem down
Valve close
3-port diverting valve:
Constant flow/variable temperature circuit:
Constant temperature /variable flow circuit
3-Port valve
Boiler
Bypass
Load
Boiler
3-Port valve Pump
Bypass
Load
Pump
Tel: +44 (0) 1732 861200. - E-mail: [email protected]. - Web: www.sontay.com.
© 2012 Sontay Limited. All rights reserved
VT-xP
Date of Issue: 20/02/2013
Issue Number: 5.3
Page 4 of 4
Dimensions:
VT-2PE:
VT-3PE:
C
B
C
B
A
A
VT-2PI:
VT-3PI:
C
C
B
B
D
A
A
VT-4P:
C
B
D
A
A
(mm)
VT-2PE
56.9
VT-2PE
56.9
VT-2PI-15 58.2
VT-2PI-20 68.6
VT-3PI
63.5
VT-4P
56.9
B
(mm)
40
56.9
40.6
55.9
58.4
15
C
D Weight
(mm) (mm)
(g)
27.7
220
27.7 29.2 240
27.7
240
27.7
360
28.7 30.5 320
29.3
40
650
Whilst every effort has been made to ensure the accuracy of this specification, Sontay cannot accept responsibility for damage, injury,
loss or expense from errors or omissions. In the interest of technical improvement, this specification may be altered without notice.
Tel: +44 (0) 1732 861200. - E-mail: [email protected]. - Web: www.sontay.com.
© 2012 Sontay Limited. All rights reserved