Siemens VMP42 Technical Instructions

Technical Instructions

Document No. 155-116A

June 14, 2012

VMP42 Two-Way and 3-Way Valves

Description

The VMP Two-way and Three-way Valves are designed to control water and glycol
solutions. By removing the cap from the bottom by-pass port (B), this valve assembly
is converted to a three-way valve.

Features

Stainless steel plug and stem
No tools are required to assemble the actuator to the valve.
Valve is shipped with a plastic cap which allows manual positioning to 80% of

stroke.

Application

The VMP is used in HVAC installations for the control of the water side of terminal
units such as induction units, fan coil units, and small reheat coils. It is suitable for use
in two-pipe or 3-pipe systems.

Product Numbers

Table 1.

Line Size

in Inches (mm)

Cv (Kvs)

Product Number

Max ΔP*

psig (kPa)

External Thread on

Valve Body

1/2 (15)

0.29 (0.25)

VMP42.09(2)

58 (400)

1/2" NPT

0.47 (0.4)

VMP42.10(2)

0.74 (0.63)

VMP42.11(2)

1.17 (1.0)

VMP42.12(2)

3/4 (20)

1.87 (1.6)

VMP42.13(2)

3/4" NPT

2.92 (2.5)

VMP42.14(2)

Product
Number

Pressure Differential psi

Cv1 2 4 6 8

10

15

20

25

30

40

50

VMP42.09(2)

0.29

0.41

0.58

0.71

0.82

0.92

1.12

1.30

1.45

1.59

1.83

2.05

VMP42.10(2)

0.47

0.66

0.94

1.15

1.33

1.49

1.82

2.10

2.35

2.57

2.97

3.32

VMP42.11(2)

0.74

1.05

1.48

1.81

2.09

2.34

2.87

3.31

3.70

4.05

4.68

5.23

VMP42.12(2)

1.17

1.65

2.34

2.87

3.31

3.70

4.53

5.23

5.85

6.41

7.40

8.27

VMP42.13(2)

1.87

2.64

3.74

4.58

5.29

5.91

7.24

8.36

9.35

10.24

11.83

13.22

VMP42.14(2)

2.93

4.14

5.86

7.18

8.29

9.27

11.35

13.10

14.65

16.05

18.53

20.72

* Max. ΔP = Maximum recommended differential pressure for modulating service.

Table 2. Maximum Water Capacity – U.S. Gallons per Minute.

Siemens Industry, Inc.

Technical Instructions VMP42 Two-Way and Three-Way Valves

Warning/Caution
Notations

WARNING:

Personal injury/loss of life may occur if a procedure is not
performed as specified.

CAUTION:

Equipment damage may occur if the user does not follow
procedure as specified.

Specifications

Valve Body

Body Style Globe, screwed
Line size/Capacity See Tables 1 and 2
Medium Water, glycol to 50%
Body Bronze
Trim Stainless Steel
Body rating ANSI Class 250 (PN 16)
Packing Double O-ring
Medium temperature 41°F to 230°F (5°C to 110°C)
Rangeability

1/2-inch 50:1
3/4-inch 100:1

Flow characteristics
Equal percentage A to AB
Linear B to AB

Leakage rate
A to AB 0.02% of CV
B to AB 0.2% of C

V

Maximum inlet pressure 232 psig (1600 kPa)
Maximum pressure differential for

modulating service 58 psig (400 kPa)
Dimensions See Figure 3.
Shipping weight

1/2" 1 lb (0.45 kg)
3/4" 1.2 lbs (0.55 kg)

Document Number 155-116A
June 14, 2012

Page 2 Siemens Industry, Inc.