Page 1
Powermite 599 Series
MT Series Terminal Unit
Two-way Valves
Technical Instructions
Document No. 155-196P25
VF 599-5
April 9, 2009
Description
Features
Application
Product Numbers
Ordering a Valve
Plus Actuator
Assembly
Specifications
The Powermite 599 Series ANSI Class 250 MT Series two-way valve bodies work with
any MT Series pneumatic or electronic actuator with a 7/32-inch (5.5 mm) stroke.
• Direct coupled universal bonnet
• Choice of brass or stainless steel trim
• ANSI Leakage Class IV (0.01% of Cv)
A typical application for the Powermite two-way valve is the control of hot or chilled
water or low pressure (<15 psi with stainless steel trim only) steam for convectors, fan
coil units, unit conditioners, radiation, reheat coils, and similar terminal units requiring
an actuator that delivers a minimum of 67 pounds force (300 N).
See Table 2.
To order a complete valve plus actuator assembly from the factory, combine the
actuator prefix code with the suffix of the valve assembly product number. See
Technical Bulletin TB251 (155-306P25) for selection procedure and ordering codes.
Valve assemblies can be ordered using the numbers in Table 2.
Valve size 1/2 inch to 1 inch (15 mm to 25 mm)
Capacity See Tables 3 through 6 and Figure 1
Body style Globe
Seat style Metal-to-metal
Action Normally open/normally closed
Valve body rating ANSI Class 250; See Table 1
Stem travel (Stroke) 7/32-inch (5.5 mm)
Siemens Building Technologies, Inc.
Page 2
Technical Instructions Powermite 599 MT Series Terminal Unit 2-way Valves
Document Number 155-196P25
April 9, 2009
Specifications
Material
Body UNS CA 844 bronze or
forged brass C37700
Body trim See Table 2
Stem Stainless steel ASTM A582 Type 303
Packing Ethylene propylene O-ring
Operating
Spring Range
Normally closed 10 to 15 psi (69 to 102 kPa)
Normally open 3 to 8 psi (21 to 55 kPa)
Controlled medium Water, low pressure steam
(<15psi with stainless steel trim only),
water-glycol solutions to 50%
Medium temperature range 35°F to 250°F (2°C to 120°C)
Maximum inlet pressure See Table 1
Maximum recommended differential pressure for modulating service
Liquid
Steam
Rangeability Cv <1 >50:1
Brass trim Stainless steel trim
25 psi (173 kPa) 50 psi (345 kPa)
— 15 psi (103 kPa)
Cv >1 >100:1
Close-off pressures See Tables 7 and 8 and Figure 2
Close-off ratings According to ANSI/FCI 70-2
Leakage rate Class IV (0.01% of Cv)
Flow characteristics Modified equal percentage
Miscellaneous
Canadian Registration Numbers 0H7645.5
0C0838.9
Mounting location NEMA 1 (interior only)
Dimensions See Tables 10 and 11 and Figure 4
Valve Weight See Table 11
Service Kit
Sealing rings for union valves (package of 25)
1/2-inch (15 mm) 698-088
3/4-inch (20 mm) 599-03394
Union connection kit
1/2-inch (15 mm) 599-02941
3/4-inch (20 mm) 599-02942
Protective black knob
426888950
to cover the bonnet
and threads/manual
override.
VF0288R1
Page 2 Siemens Building Technologies, Inc.
Page 3
Powermite 599 MT Series Terminal Unit 2-way Valves Technical Instructions
Document Number 155-196P25
April 9, 2009
Table 1. Body Temperature-Pressure Rating.
Temperature Pressure
Valve Body
°F °C psig (kPa)
-20 to 150 (-30 to 66) 400 (2758)
Bronze/
Forged Brass
200 (93) 385 (2655)
250 (121) 365 (2586)
300 (149) 335 (2300)
350 (177) 300 (2068)
VF0215R1
Female NPT x Female NPT
FxF
Flow Rate
Action
Cv (Kvs) Inch (mm)
0.4 (0.34) 1/2 (15) 599-02015 599-02016 — 599-02000 599-02001 —
0.63 (0.54) 1/2
1.0 (0.85) 1/2
1.6 (1.37) 1/2
2.5 (2.15) 1/2
4.0 (3.44) 1/2
Normally Closed
6.3 (5.43) 3/4 (20) 599-02027 599-02028 — 599-02012 599-02013 —
10 (8.6) 1 (25) 599-02029
0.4 (0.34) 1/2 (15) 599-02047 599-02048 — 599-02030 599-02031 —
0.63 (0.54) 1/2
1.0 (0.85) 1/2
1.6 (1.37) 1/2
2.5 (2.15) 1/2
4.0 (3.44) 1/2
Normally Open
6.3 (5.43) 3/4 (20) 599-02061 599-02062
10 (8.6) 1 (25) 599-02063
Nominal Valve
Size
(15)
(15)
(15)
(15)
(15)
(15)
(15)
(15)
(15)
(15)
VF0210R1
Female NPT x Union Male
FxUM
VF0217R1
Angle Female x Union Male
AFxUM
Table 2. Product Part Numbers.
Trim and Connection
Stainless Steel Brass
F×F F×UM AF×UM F×F F×UM AF×UM
599-02017 599-02018 — 599-02002 599-02003 —
599-02019 599-02020 — 599-02004 599-02005 —
599-02021 599-02022 — 599-02006 599-02007 —
599-02023 599-02024 — 599-02008 599-02009 —
599-02025 599-02026 — 599-02010 599-02011 —
—
599-02049 599-02050
599-02051 599-02052
599-02053 599-02054
599-02055 599-02056 599-02057 599-02038 599-02039 599-02040
599-02058 599-02059 599-02060 599-02041 599-02042 599-02043
—
— 599-02014 — —
—
—
—
—
—
599-02032 599-02033 —
599-02034 599-02035 —
599-02036 599-02037 —
599-02044 599-02045 —
599-02046 — —
Siemens Building Technologies, Inc. Page 3
Page 4
Technical Instructions Powermite 599 MT Series Terminal Unit 2-way Valves
Document Number 155-196P25
April 9, 2009
Table 3. Maximum Water Capacity - U.S. Gallons per Minute.
Valve
Size
In
inches
1/2
3/4
1
Pressure Differential - psi
Cv\1 2 3 4 5 6 8 10 15 20 25 30 40 50 60 75
0.4 0.6 0.7 0.8 0.9 1.0 1.1 1.3 1.5 1.8 2.0 2.2 2.5 2.8 3.1 3.5
0.63 0.9 1.1 1.3 1.4 1.5 1.8 2.0 2.4 2.8 3.2 3.5 4.0 4.5 4.9 5.5
1.0 1.4 1.7 2.0 2.2 2.5 2.8 3.2 3.9 4.5 5.0 5.5 6.3 7.1 7.8 8.7
1.6 2.3 2.8 3.2 3.6 3.9 4.5 5.1 6.2 7.2 8.0 8.8 10.1 11.3 12.4 13.9
2.5 3.5 4.3 5.0 5.6 6.1 7.1 7.9 9.7 11.2 12.5 13.7 15.8 17.7 19.4 22
4 5.7 7 8.0 8.9 10 11.3 12.6 15.5 17.9 20.0 21.9 25 28 31 35
6.3 8.9 10.9 12.6 14.1 15.4 17.8 20 24 28 32 35 40 45 49 55
10 14.1 17.3 20 22 24 28 32 39 45 50 55 63 71 77 87
3
Table 4. Maximum Water Capacity - Cubic Meters per Hour (m
/hr).
Valve Size Pressure Differential - kPa
In
mm
1 10 20 30 40 50 60 80
Kvs/
100
150 200 300 400 500
0.03 0.11 0.15 0.19 0.22 0.24 0.26 0.30 0.34 0.42 0.48 0.59 0.68 0.76
0.05 0.17 0.24 0.30 0.34 0.38 0.42 0.48 0.54 0.66 0.76 0.94 1.08 1.21
0.09 0.27 0.38 0.47 0.54 0.60 0.66 0.76 0.85 1.0 1.2 1.5 1.7 1.9
15
0.14 0.43 0.61 0.75 0.87 0.97 1.06 1.23 1.37 1.7 1.9 2.4 2.7 3.1
0.21 0.68 0.96 1.17 1.35 1.51 1.66 1.91 2.15 2.6 3.0 3.7 4.3 4.8
0.34 1.1 1.5 1.9 2.2 2.4 2.7 3.1 3.4 4.2 4.9 6.0 6.9 7.7
0.54 1.7 2.4 3.0 3.4 3.8 4.2 4.9 5.4 6.7 7.7 9.4 10.9 12.1
20
0.86 2.7 3.8 4.7 5.4 6.1 6.7 7.7 8.6 10.5 12.2 14.9 17.2 19.2
25
1.4 4.4 6.2 7.6 8.7 9.8 10.7 12.3 13.8 16.9 19.5 23.9 27.6 30.9
32
2.2 6.8 9.6 11.8 13.6 15.2 16.7 19.2 22 26 30 37 43 48
40
Page 4 Siemens Building Technologies, Inc.
Page 5
Powermite 599 MT Series Terminal Unit 2-way Valves Technical Instructions
Document Number 155-196P25
April 9, 2009
Table 5. Maximum Steam Capacity - Pounds per Hour.
Inlet Pressure - psig
Valve
Size
Inches
2 5 10 15
Pressure Differential - psi
Cv/1 1 2 1 2 3 4 5 2 4 6 8 10 6 9 12 15
0.4 4.8 6.7 5.2 7.3 8.8 10.0 11.0 8.2 11.3 13.6 15.3 16.7 15.0 17.9 20.0 21.6
0.63 7.5 10.5 8.2 11.4 13.8 15.7 17.4 12.9 17.8 21.3 24.1 26 23.7 28.2 32 34
1.0 12.0 16.6 13.0 18.2 22 25 28 20 28 34 38 42 38 45 50 54
1/2
1.6 19.1 27 21 29 35 40 44 33 45 54 61 67 60 72 80 86
2.5 30 42 33 45 55 62 69 51 71 85 96 104 94 112 125 135
4 48 67 52 73 88 100 110 82 113 136 153 167 150 179 200 216
3/4
6.3 75 105 82 114 138 157 174 129 178 213 241 263 237 282 316 341
1
10 120 166 130 182 219 250 275 204 283 339 382 417 376 447 501 541
Table 6. Steam Capacity - Kilograms per Hour.
Inlet Pressure - kPa
Valve
Size
50 100
Pressure Differential – kPa
mm
Kvs 10 25 10 20 50
0.34 1.7 2.7 2.4 3.4 5.4
0.54 2.7 4.3 3.8 5.4 8.5
15
0.85 4.3 6.8 6 8.5 14
1.37 6.9 10.8 10 14 22
2.15 10.7 17 15 21 34
3.4 17 27 24 34 54
20
25
5.4 27 43 38 54 85
8.6 43 68 60 85 135
Siemens Building Technologies, Inc. Page 5
Page 6
Technical Instructions Powermite 599 MT Series Terminal Unit 2-way Valves
Document Number 155-196P25
April 9, 2009
Differential Pressure p (kPa)
8910
300
200
100
80
60
50
40
30
20
)
10
10
8
6
GPM
(
5
4
3
2
11
1
0.8
Flow Rate
0.6
0.5
0.4
0.3
0.2
0.1
1
VF0320R1
20
30
40
5060708090
1"
3/4"
1/2"
1/2"
1/2"
1/2"
1/2"
1/2"
2
3
4
56789
10
Differential Pressure p (psi)
100
100
)
(
25
)
(
20
)
(
15
)
(
15
)
(
15
)
(
15
)
(
15
)
(
15
Cv = 10
Cv = 6.3
Cv = 4.0
Cv = 2.5
Cv = 1.6
Cv = 1.0
Cv = 0.63
Cv = 0.4
20
200
30
300
400
50
40
30
20
10
8
6
5
Flow Rate (m3/hr)
4
3
2
1
0.8
0.6
0.5
0.4
0.3
0.2
0.1
0.08
0.06
0.05
0.04
0.03
40
70
50
60
Selection Example
See Figure 1.
Figure 1. Water Capacity Graph.
Select a valve given:
c Required flow = 20 gpm.
d Desired pressure drop = 5 psi.
e Choose a 1-inch (25-mm) valve, Cv 10.
Page 6 Siemens Building Technologies, Inc.
Page 7
Powermite 599 MT Series Terminal Unit 2-way Valves Technical Instructions
Document Number 155-196P25
April 9, 2009
Table 7. Close-off Pressures for Electronic Actuators.
Action
NC
Valve Size
Inch (mm)
1/2 0.4< Cv <1.6
(15) (0.34< Kvs <1.37)
1/2 2.5< Cv <4
(15) (2.15< Kvs <3.44)
SQS
psi (kPa)
SSC
psi (kPa)
95 (655) 95 (655)
50 (345) 50 (345)
3/4 (20)
40 (276) 40 (276)
1 (25)
NO
1/2 0.4< Cv <1.6
(15) (0.34< Kvs <1.37)
1/2 2.5< Cv <4
160 (1103) 120 (828)
85 (586) 65 (448)
(15) (2.15< Kvs <3.44)
3/4 (20)
70 (482) 55 (379)
1 (25)
Table 8. Maximum Available Close-off Pressures for Pneumatic Actuators.
2-inch Actuator
Action
Valve Size
Inch (mm)
@ 0 psi (0 kPa)
(with 10 to 15 psi
valve)
1/2 0.4< Cv <1.6
95 (655)
(15) (0.34< Kvs <1.37)
1/2 2.5< Cv <4
50 (345)
NC
(15) (2.15< Kvs <3.44)
3/4 (20
40 (276)
1 (25)
@ 20 psi (103 kPa)
(with 3 to 8 psi
valve)
1/2 0.4< Cv <1.6
95 (655)
(15) (0.34< Kvs <1.37)
2.5< Cv <4
NO
1/2
(2.15< Kvs <3.44)
(15)
45 (310)
3/4 (20)
35 (241)
1 (25)
Siemens Building Technologies, Inc. Page 7
Page 8
Technical Instructions Powermite 599 MT Series Terminal Unit 2-way Valves
Document Number 155-196P25
April 9, 2009
2W, NC, 10 - 15 psi
100
90
95
80
(655)
70
60
50
40
30
20
10
Differential Pressure (psi)
0
100
90
80
70
60
50
40
30
20
Differential Pressure (psi)
10
0
50
(345)
1/2",
1/2",
Cv<1.6
Cv<4
Line Size (in)
2W, NO, 3 - 8 psi
95
(655)
45
(310)
1/2",
1/2",
Cv<1.6
Cv<4
Line Size (in)
2-in Pneumatic
40
(276)
3/4" and 1"
Cv<10
35
(241)
3/4" and 1"
Cv<10
690
621
552
483
414
345
276
207
138
69
Differential Pressure (kPa)
0
690
621
552
483
414
345
276
207
138
Differential Pressure (kPa)
69
0
VF0319R1
A
2W NC
B
2W NO
2W, NC, SQS...
100
90
95
80
(655)
70
60
50
40
30
20
10
Differential Pressure (psi)
0
180
160
140
120
100
80
60
40
Differential Pressure (psi)
20
0
50
(345)
1/2",
1/2",
Cv>0.4
Cv>2.5
Cv<1.6
Cv<4
Line Size (in)
2W, NO, SQS...
160
(1103)
85
(586)
1/2",
1/2",
Cv>0.4
Cv>2.5
Cv<1.6
Cv<4
Line Size (in)
SQS...
40
(276)
3/4" and 1"
70
(483)
3/4" and 1"
690
621
552
483
414
345
276
207
138
69
Differential Pressure (kPa)
0
1241
1103
966
828
690
552
414
276
138
Differential Pressure (kPa)
0
2W, NC, SSC...
100
90
95
80
(655)
70
60
50
40
30
20
10
Differential Pressure (psi)
0
140
120
100
80
60
40
20
Differential Pressure (psi)
0
50
(345)
1/2",
1/2",
Cv>0.4
Cv>2.5
Cv<1.6
Cv<4
Line Size (in)
2W, NO, SSC...
120
(828)
65
(448)
1/2",
1/2",
Cv>0.4
Cv>2.5
Cv<1.6
Cv<4
Line Size (in)
SSC...
40
(276)
3/4" and 1"
55
(379)
3/4" and 1"
690
621
552
483
414
345
276
207
138
69
Differential Pressure (kPa)
0
996
828
690
552
414
276
138
Differential Pressure (kPa)
0
Figure 2. Close-off Pressures.
Operation
Sizing
Figure 3 shows the normally open valve in the open or full flow position and the
normally closed valve in the closed or zero flow position. The valve spring provides the
necessary force to hold the stem in the raised or normal position.
In the event of power failure, a spring return actuator returns the valve to its normal
position. Non-spring return actuators will hold the last commanded position. See the
Technical Instructions of the various actuators for additional information.
NORMALLY OPEN
VF0209R1
NORMALLY CLOSED
Figure 3.
The sizing of a valve is important for correct system operation. An undersized valve will
not have sufficient capacity at maximum load. An oversized valve can initiate cycling,
and the seat and throttling plug can be damaged because of the restricted opening.
Correct sizing of the control valve for actual expected conditions is considered essential
for good control.
See Tables 3 through 6 for valve capacities.
Page 8 Siemens Building Technologies, Inc.
Page 9
Powermite 599 MT Series Terminal Unit 2-way Valves Technical Instructions
Document Number 155-196P25
April 9, 2009
Sizing, continued
Mounting and
Installation
The following variables must be determined:
• The medium to be controlled: water, etc.
• The maximum inlet temperature and pressure of the medium at the valve.
• The pressure differential that will exist across the valve under maximum load
demand.
• The maximum capacity the valve must deliver.
• The maximum line pressure differential the valve actuator must close against.
See Application Bulletin (AB)-1 Control Valve Selection and Sizing (155-285) for further
recommendations.
Install the valve so that the flow follows the direction of the arrow indicated on the valve
body.
For best performance, install the valve assembly with the actuator above the valve body.
The valve and actuator can be installed in any position between vertical and horizontal. It is
not recommended to install the valve assembly so that the actuator is below horizontal or
upside-down.
Allow sufficient space for servicing the valve and actuator. See Table 11 for valve body
dimensions. See Figure 4 and Table 10 for dimensions of the service envelope
recommended around the actuator.
NOTE: Instructions for field mounting an actuator, wiring diagrams, and start-up are
covered in the Technical Instructions and Installation Instructions for each
actuator.
Parts of the Valve
1
2
3
4
VF0212R1
7
6
5
1
2
3
4
VF0213R1
7
6
5
Normally Open Normally Closed
Table 9. 2-way Bronze/Forged Brass Valves.
Item Part Name Qty Material Item Part Name Qty Material
1 Bonnet assembly 1 5 Stem and plug assembly 1 Stainless steel or brass
2 Spring 1 Stainless steel 6 Upper guide disc 1 Brass
3 Wiper 1 Nylon 7 Retaining ring 1 Stainless steel
4 Valve body 1 Bronze/Forged
brass
Siemens Building Technologies, Inc. Page 9
Page 10
Technical Instructions Powermite 599 MT Series Terminal Unit 2-way Valves
Document Number 155-196P25
April 9, 2009
Service
Dimensions
Replace the valve if inoperable.
The letters in Figure 4 refer to the valve centerline to top of actuator, the width of the
actuator, and service envelope dimensions in Table 10. See Table 11 for valve body
dimensions.
Figure 4.
Page 10 Siemens Building Technologies, Inc.
Page 11
Powermite 599 MT Series Terminal Unit 2-way Valves Technical Instructions
Document Number 155-196P25
April 9, 2009
Table 10. Actuator Dimensions and Recommended Service Envelope. Dimensions in Inches (Millimeters).
Actuator
Actuator
Prefix
Code
599-01088
2-Inch
Pneumatic
SQS65U
0 to 10 Vdc
NSR*
SQS65.5U
0 to 10 Vdc
SR**
SQS85.53U
Floating
SR
SSC61U
0 to 10 Vdc
NSR
SSC61.5U
0 to 10 Vdc
SR
SSC81U
Floating
NSR
SSC81.5U
Floating
SR
256,
257,
258
264
265
266
261
262
259
260
*NSR: Non-spring Return
**SR: Spring Return
Valve
Size
1/2 (15)
3/4 (20)
1 (25)
1/2 (15)
3/4 (20)
1 (25)
1/2 (15)
3/4 (20)
1 (25)
1/2 (15)
3/4 (20)
1 (25)
1/2 (15) 5-1/2 (140) 13-1/2 (343) 4-3/4 (121)
3/4 (20) 5-1/2 (140) 13-1/2 (343) 4-3/4 (121)
1 (25) 5-3/4 (146) 13-3/4 (349) 4-3/4 (121)
1/2 (15) 5-1/2 (140) 13-1/2 (343) 4-3/4 (121)
3/4 (20) 5-1/2 (140) 13-1/2 (343) 4-3/4 (121)
1 (25) 5-3/4 (146) 13-3/4 (349) 4-3/4 (121)
1/2 (15) 5-1/2 (140) 13-1/2 (343) 4-3/4 (121)
3/4 (20) 5-1/2 (140) 13-1/2 (343) 4-3/4 (121)
1 (25) 5-3/4 (146) 13-3/4 (349) 4-3/4 (121)
1/2 (15) 5-1/2 (140) 13-1/2 (343) 4-3/4 (121)
3/4 (20) 5-1/2 (140) 13-1/2 (343) 4-3/4 (121)
1 (25) 5-3/4 (146) 13-3/4 (349) 4-3/4 (121)
Center line to Top of
Actuator, H1
3-1/16 (78) 11 (280) 4 (100) 10 (250)
3-1/16 (78) 11 (280) 4 (100) 10 (250)
3-5/16 (84) 11-1/4 (285) 4 (100) 10 (250)
6-5/8 (167)) 14-1/2 (370) 5-1/16 (128) 9 (225)
6-5/8 (167) 14-1/2 (370) 5-1/16 (128) 9 (225)
6-7/8 (173) 15 (380) 5-1/16 (128) 9 (225)
6-1/16 (153) 14 (355) 5-1/16 (128) 9 (225)
6-1/16 (153) 14 (355) 5-1/16 (128) 9 (225)
6-5/16 (159) 14-1/2 (370) 5-1/16 (128) 9 (225)
6-1/16 (153) 14 (355) 5-1/16 (128) 9 (225)
6-1/16 (153) 14 (355) 5-1/16 (128) 9 (225)
6-5/16 (159) 14-1/2 (370) 5-1/16 (128) 9 (225)
Service Height, H
Width or
Diameter of
Actuator, W1
Service
Width
W
12-3/4 (324)
12-3/4 (324)
12-3/4 (324)
12-3/4 (324)
12-3/4 (324)
12-3/4 (324)
12-3/4 (324)
12-3/4 (324)
12-3/4 (324)
12-3/4 (324)
12-3/4 (324)
12-3/4 (324)
Siemens Building Technologies, Inc. Page 11
Page 12
Technical Instructions Powermite 599 MT Series Terminal Unit 2-way Valves
Document Number 155-196P25
April 9, 2009
C
B
VF0218R1
A A
Female NPT × Female NPT
F×F
Valve
Size
A
inch
1/2
(15)
3/4
(20)
1
(25)
1-3/8
(35)
1-5/8
(41)
1-15/16
(49)
F×F
&
F×UM
2-1/4
(57)
2-3/8
(59)
2-3/4
(69)
C
B
VF0219R1
A D
Female NPT × Union Male
F×UM
Table 11. 2-way Valve Dimensions.
B
C D E
AF×UM F×F F×UM AF×UM
2-15/16
(74)
NO Only
—
—
1-5/16
(33)
1-5/16
(33)
1-9/16
(39)
2-5/8
(67)
NO only
3-1/8
(79)
— —
C
B
VF0220R1
Angle Female × Union Male
AF×UM
Weight
lb (kg)
1-1/2
(38)
—
.96
(0.44)
1.13
(.51)
1.7
(.77)
1.14
(0.5)
1.45
(.66)
— —
DE
1.4
(0.6)
—
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.
© 2009 Siemens Building Technologies, Inc.
Siemens Building Technologies, Inc.
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
U.S.A.
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Document No. 155-196P25
Country of Origin: US
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