Basic Documentation

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Specications
Valve Size ..............................................................1/2 to 1” (15 to 40 mm)
Body Style ........................................................................................ Globe
Seat Style ............................................................................ Metal to Metal
Action ................................................................ NO/NC/Three-Way Mixing
Valve Body Rating .............................................................. ANSI Class 250
Stem Travel (Stroke) ......................................................... 7/32” (5.5 mm)
Materials
Body ...................................Forged Brass C37700 or UNS CA 844 Bronze
Trim ......................................................................Stainless Steel or Brass
Stem ............................................... Stainless Steel ASTM A582 Type 303
Packing ............................................................................. EPDM O-rings
Controlled Medium .................... Water, Steam, Glycol Solutions up to 50%
Spring Range
Standard – 2-Way
Normally Closed ......................................10 to 15 psig (69 to 103 kPa)
Normally Open ..............................................3 to 8 psig (21 to 55 kPa)
Optional– 2-Way
Normally Closed ............................................3 to 8 psig (21 to 55 kPa)
8 to 13 psig (55 to 90 kPa)
Normally Open ............................................8 to 13 psig (55 to 90 kPa)
10 to 15 psig (69 to 103 kPa)
Standard – 3-Way Mixing ................................ 8 to 13 psig (55 to 90 kPa)
Optional – 3-Way Mixing ...................................3 to 8 psig (21 to 55 kPa)
10 to 15 psig (69 to 103 kPa)
Medium Temperature Range ............................... 35 to 250°F (2 to 120°C)
Standard Temperature Packing ..........................20 to 250°F (-7 to 120°C)
Max. Recommended Differential
Pressure for Liquid Modulating Service
Brass Trim ..................................................................... 25 psi (173 kPa)
Stainless Steel Trim ........................................................ 50 psi (345 kPa)
Steam Stainless Steel Trim .............................................. 15 psi (103 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
Two-Way NO/NC ............................................. Modied Equal Percentage
Three-Way Mixing
A→AB ........................................................ Modied Equal Percentage
B→AB ....................................................................................... Linear
Two- & Three-Way MT Series Globe Valves
1/2 to 1"
Normally Open, Normally Closed, Mixing
ANSI Class 250
Description
The Powermite MT Series Globe Valves are designed to work
with either a pneumatic or electronic actuator with a 7/32-inch
(5.5 mm) stroke. Compatible actuators deliver a minimum of
67 lbf. (300 N) of force.
Features
• Direct-coupled universal bonnet/no tools required for installation
• Choice of brass or stainless steel trim
• ANSI Leakage Class IV (0.01% of Cv)
• ANSI Class 250
• Available in 3 to 8 psi, 8 to 13 psi, or 10 to 15 psi spring ranges
with pneumatic actuation
• Available with spring return and non-spring return 0-10 and
oating control electronic actuators
• Greater than 100:1 rangeability for Cv
>
1.0
• Rated for 15 psi steam with stainless steel trim
• Interchangeable pneumatic or electronic actuators
Applications
Typical applications include control of hot or chilled water, glycol
solutions up to 50%, or steam up to 15 psi (103 kPa).
Recommendation
Only use the MT Series Valve Actuators. When using this valve with
a pneumatic actuator, note that MT valve bodies have the spring in
the body, rather than the actuator. To order the correct valve body,
select the proper spring range.
Alternate spring ranges for pneumatic sequencing are available as
valve and actuator factory assemblies only.