Siemens Building Technologies MZ Series Valve Catalog Page
Three-way MZ Series Valve Specifications
A-130
Valves
Valve Size .............................................................1/2 to 1" (15 to 25 mm)
Body Style ....................................................................................... Globe
Seat Style ...........................................................................Metal to Metal
Action ............................................................................ Three-way Mixing
Valve Body Rating .......................................................... ANSI Class 250
Stem Travel (Stroke) .........................................................7/32" (5.5 mm)
Materials
Body ...................................... Forged Brass C37700 (1/2 and 3/4 inch)
or UNS CA 844 Bronze (1 inch)
Trim ............................................................................................... Brass
Stem ............................................ Stainless Steel ASTM A582 Type 303
Packing ............................................................................ EPDM O-rings
Controlled Medium ............................. Water, Glycol Solutions up to 50%
Medium Temperature Range ............................ 35 to 250°F (2 to 120°C)
Max. Recommended Differential
Pressure for Modulating Service ................................ 25 psig (173 kPa)
Rangeability
Cv<1 ............................................................................................... >50:1
Cv>1 ............................................................................................. >100:1
Close-off Ratings .......................................... According to ANSI/FCI 70-2
Leakage Rate ........................................................ Class IV (0.01% of Cv)
Flow Characteristics
A→AB ..................................................... Modied Equal Percentage
B→AB .......................................................................................Linear
Mounting Location ............................................... NEMA 1 (Interior Only)
Refer back to the Selection Charts at the beginning of this section
to make sure the conguration is valid.
Three-way MZ Series Valve Body Product Ordering
Water Mixing, Brass Trim
Valve Size
in. (mm)
1/2 (15) 0.4 (0.34) 599-01132
1/2 (15) 0.63 (0.54) 599-01133
1/2 (15) 1 (0.85) 599-01134
1/2 (15) 1.6 (1.37) 599-01135
1/2 (15) 2.5 (2.14) 599-01136
1/2 (15) 4 (3.42) 599-01137
3/4 (20) 6.3 (5.38) 599-01138
1 (25) 10 (8.55) 599-01139
There are no repair parts for this product. Replace the entire valve body if inoperative.
Cv (Kvs)
Flow Rate
Part No.
Three-way MZ Series Valve Actuator Product Ordering
Description Part No. Actuator Prex Code
24 V, Floating Non-Spring Return SSB81U 254
Electro-Mechanical
24 V, 0-10 V Non-Spring Return SSB61U 255
Dimensions and Weights
A
Dimensions
B C
2-15/16"
(74 mm)
2-3/8"
(59 mm)
3-15/16"
(99 mm)
1-5/16"
(33 mm)
1-5/16"
(33 mm)
1-9/16"
(39 mm)
Weight
1.5 lb.
(0.7 kg)
2.3 lb.
(1.05 kg)
3.3 lb.
(1.5 kg)
Valve Size
in.
1/2"
(15 mm)
3/4"
(20 mm)
1"
(25 mm)
2-3/4"
(70 mm)
3-1/4"
(83 mm)
3-7/8"
(98 mm)
Accessories & Service Kits
A-257
www.usa.siemens.com/hvac
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