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Powermite 599 Series, MT Series Terminal Unit Three-Way Valves Submittal Sheet
Document No. 154-025P25
August 20, 2007
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications
and models as design improvements are introduced. Product or company names mentioned herein may be the trademarks of their
respective owners. © 2007 Siemens Industry, Inc.
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089
+ 1 847-215-1000
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Document No. 154-025P25
Printed in the USA
Page 3
Table 3. Close-Off Ratings in psi (kPa).
Action
Valve Size
Inch
Flow Rate,
Cv (Kvs)
Electronic Actuator
Close-Off Ratings @ 20 psi (138 kPa)
2-Inch Pneumatic Actuator
SQS SSC
3-8 psi
(69-103 kPa)
8-13 psi
(21-55 kPa)
10-15 psi
(55-90 kPa)
3-way,
upper
1/2 0.4 to 1.6 (0.34 to 1.37) 95 (655) 95 (655) 40 (276) 95 (655) 120 (828)
1/2 2.5 to 4 (2.15 to 3.44) 50 (345) 50 (345) 28 (193) 50 (345) 65 (448)
3/4 and 1 6.3 to 10 (5.43 to 8.6) 40 (276) 40 (276) 18 (124) 40 (276) 50 (345)
3-way,
lower
1/2
0.4 to 1.6 (0.34 to 1.37) 160 (1103) 95 (655) 95 (655) 45 (310) 20 (138)
1/2
2.5 to 4 (2.15 to 3.44) 85 (586) 55 (379) 45 (310) 25 (172) 15 (103)
3/4 and 1 6.3 to 10 (5.43 to 8.6) 70 (482) 40 (276) 35 (241) 10 (69) —
Figure 1. 3-way Valve Dimensions
in Inches (mm).
Valve Size
Inch
A B C
Weight
lbs (kg)
1/2
2-3/4
(70)
2-15/16
(74)
1-5/16
(33)
1.10
(0.5)
3/4
3-1/4
(83)
3-9/16
(90)
1-5/16
(33)
1.44
(.65)
1
3-7/8
(98)
3-15/16
(99)
1-9/16
(39)
2.20
(1.0)
Typical Specifications
Automatic control valves shall have NPT threaded type
fittings, 1/2-inch through 1-inch sizes, and shall be ANSI
rated to withstand the pressures and temperatures
encountered.
Valves shall have metal-to-metal seats, stainless steel
stems, and Ethylene propylene O-ring packing.
Valve shall be ANSI Leakage Class IV (0.01% of Cv).
Valves shall have >50:1 rangeability for Cv <1and
>100:1 rangeability for Cv>1.
All three-way valves shall be provided with throttling
plugs such that the total flow through the valve remains
constant (linear) regardless of the valve position.
For complete technical details on valves with stainless
steel trim, see Powermite 599 Series, MT Series
Terminal Unit Three-way Valves Technical Instructions,
155-197P25.