Product Overview

Submittal Sheet Powermite 599 Series, MT Series Terminal Unit 3-Way Valves
Document No. 154-025P25
August 20, 2007
Page 2 Siemens Industry, Inc.
Table 2. 3-Way, Mixing Valve & Actuator Assemblies with Stainless Steel Trim.
Valve
Body
Valve
Size,
Inch
Cv
(Kvs)
2-Inch Pneumatic Actuators,
Spring Return *
Electro-mechanical, 24 Vac
10-15 psi
(69-103 kPa)
3-8 psi
(21-55
kPa)
8-13 psi
(55-90
kPa)
SSC81U
Floating,
NSR
SSC81.5U
Floating,
SR
SSC61U
0-10V,
NSR
SSC61.5U
0-10V,
SR
SQS65U
0-10V,
NSR
SQS65.5U
0-10V,
SR
SQS85.53U
Floating,
SR
Actuator Prefix Code
256 257 258 259 260 261 262 264 265 266
599-02072
1/2
0.4
(0.34)
256-02072A 257-02072B
258-02072 259-02072 260-02072 261-02072 262-02072 264-02072 265-02072 266-02072
599-02073
1/2
0.63
(0.54)
256-02073A 257-02073B
258-02073 259-02073 260-02073 261-02073 262-02073 264-02073 265-02073 266-02073
599-02074
1/2
1
(0.85)
256-02074A 257-02074B
258-02074 259-02074 260-02074 261-02074 262-02074 264-02074 265-02074 266-02074
599-02075
1/2
1.6
(1.37)
256-02075A 257-02075B
258-02075 259-02075 260-02075 261-02075 262-02075 264-02075 265-02075 266-02075
599-02076
1/2
2.5
(2.14)
256-02076A 257-02076B
258-02076 259-02076 260-02076 261-02076 262-02076 264-02076 265-02076 266-02076
599-02077
1/2
4
(3.42)
256-02077A 257-02077B
258-02077 259-02077 260-02077 261-02077 262-02077 264-02077 265-02077 266-02077
599-02078
3/4
6.3
(5.38)
256-02078A 257-02078B
258-02078 259-02078 260-02078 261-02078 262-02078 264-02078 265-02078 266-02078
599-02079
1
10
(8.55)
256-02079A 257-02079B
258-02079 259-02079 260-02079 261-02079 262-02079 264-02079 265-02079 266-02079
* Product numbers in gray shading are available as assemblies only.
Technical Data
Valve Size 1/2-inch to 1-inch
Body Globe style, UNS CA 844
bronze or forged brass
C37700, ANSI Class 250
Trim Brass or Stainless Steel
Stem Stainless steel
ASTM A582 Type 303,
7/32-inch (5.5-mm) stroke
Seat Metal-to-metal
Packing Ethylene propylene O-ring
Spring Range 8 to 13 psi (55 to 90 kPa)
Close-off Ratings According to ANSI/FCI 70-2
See Table 3.
Controlled Medium Water, glycol solutions to 50%
Medium Temperature 35°F to 250°F (2°C to 120°C)
Maximum Differential Pressure for Modulating Service:
Media Brass Stainless Steel
Liquid
25 psi (173 kPa)
50 psi (345 kPa)
Rangeability Cv <1 = >50:1,
Cv >1 = >100:1
Leakage Rate Class IV (0.01% of Cv)
Flow Characteristics Linear
Mounting NEMA 1 (interior only)