Siemens Building Technologies Two-way Valves Data Sheet

Siemens
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Two-way Valves

1/2 to 1-inch
Normally Open or Normally Closed

Powermite

MZ Series Globe

Powermite MZ Series

Two-way Globe Valve.

Description

The Powermite MZ Series Two-way Globe Valves are
designed to work with the SSB MZ Series Actuator
with a 7/32-inch (5.5 mm) stroke.

Features

• Direct-coupled universal bonnet/no tools required
for installation

• ANSI Leakage Class IV (0.01% of Cv)

• ANSI Class 250 body

• Variety of actuators available
– 0 to 10 V non-spring return
– Floating control non-spring return

• Choice of end connections

• Greater than 100:1 rangeability for Cv >1

• Orderable as a valve only or as a complete
valve/actuator assembly

Applications

The Powermite MZ Series Two-way Globe Valves are
used for control of hot or chilled water for convectors, fan
coil units, unit conditioners, radiation, reheat coils, and
similar terminal units requiring an actuator that delivers a
minimum of 45 lbf. (200 N) of force.

Recommendation:

Use only with the MZ Series SSB Valve Actuators.

A-125

Valves

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Two-way MZ Series Valve Body Specifications

A-126

Valves

Valve Size .............................................................1/2 to 1" (15 to 25 mm)

Body Style ....................................................................................... Globe

Seat Style ...........................................................................Metal to Metal

Action .............................................................................................NO/NC

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)

Trim ................................................................................................ Brass

Stem ........................................... Stainless Steel ASTM A 582 Type 303

Packing ............................................................................ EPDM O-rings

Controlled Medium .......................

Medium Temperature Range ............................ 35 to 250°F (2 to 120°C)

or UNS CA 844 Bronze (1 inch)

Water, Glycol Solutions up to 50%

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 .................................... Modied Equal Percentage

Mounting Location .............................................. NEMA 1 (Interior Only)

Two-way MZ Series Valve Body Product Ordering

Normally Open/Normally Closed, Brass Trim

Connection

Female x Female

Female x Union Male

Angle Female x Union Male

There are no repair parts for this product. Replace the entire valve body if inoperative.

Valve Size

in. (mm)

1/2 (15) 0.4 (0.34) 599-01115 599-01100
1/2 (15) 0.63 (0.54) 599-01117 599-01102
1/2 (15) 1 (0.85) 599-01119 599-01104
1/2 (15) 1.6 (1.37) 599-01121 599-01106
1/2 (15) 2.5 (2.14) 599-01123 599-01108
1/2 (15) 4 (3.42) 599-01126 599-01110
3/4 (20) 6.3 (5.38) 599-01129 599-01112
1 (25) 10 (8.55) 599-01131 599-01114
1/2 (15) 0.4 (0.34) 599-01116 599-01101
1/2 (15) 0.63 (0.54) 599-01118 599-01103
1/2 (15) 1 (0.85) 599-01120 599-01105
1/2 (15) 1.6 (1.37) 599-01122 599-01107
1/2 (15) 2.5 (2.14) 599-01124 599-01109
1/2 (15) 4 (3.42) 599-01127 599-01111
3/4 (20) 6.3 (5.38) 599-01130 599-01113
1/2 (15) 2.5 (2.14) 599-01125 —
1/2 (15) 4 (3.42) 599-01128 —

Flow Rate

Cv (Kvs)

Refer back to the Selection Charts at the beginning of this section

to make sure the conguration is valid.

Normally Open

Part No.

Normally Closed

Part No.

Two-way MZ Series Valve Actuator Product Ordering

Description Part No. Actuator Prex Code

24 V, oating Non-Spring Return SSB81U 254

Electro-Mechanical

Accessories & Service Kits

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24 V, 0-10 V Non-Spring Return SSB61U 255

A-257