Install Instructions

ManualsBrandsSiemens ManualsControl Valves1/2" AF x UM 2-Way Normally Open Valve Assembly, 3-8 psi, 2.5 Cv

Powermite 599 Series

Technical Instructions

Document No. 155-196P25

VF 599-5

February 9, 2018

MT Series Terminal Unit

Two-way Valves

Siemens Industry, Inc.

Description

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.

Features

• Direct coupled universal bonnet

• Choice of brass or stainless steel trim

• ANSI Leakage Class IV (0.01% of Cv)

Application

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).

Product Numbers

See Table 2.

Ordering a Valve

Plus Actuator

Assembly

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.

Specifications

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)

Summary of content (12 pages)

PAGE 1
Technical Instructions Document No. 155-196P25 VF 599-5 February 9, 2018 Powermite 599 Series MT Series Terminal Unit Two-way Valves Description Features 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.
PAGE 2
Technical Instructions Document Number 155-196P25 February 9, 2018 Specifications Material Operating Powermite 599 MT Series Terminal Unit 2-way Valves Body 1/2- and 3/4-inch 1-inch Body trim Stem Packing C37700 Forged brass UNS CA 844 Bronze See Table 2 Stainless steel ASTM A582 Type 303 Ethylene propylene O-ring Spring Range Normally closed Normally open Controlled medium 10 to 15 psi (69 to 102 kPa) 3 to 8 psi (21 to 55 kPa) Water, low pressure steam (<15psi with stainless steel trim only), water-
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Powermite 599 MT Series Terminal Unit 2-way Valves Technical Instructions Document Number 155-196P25 February 9, 2018 Table 1. Body Temperature-Pressure Rating. Temperature Valve Body Bronze/ Forged Brass Female NPT x Female NPT FxF Pressure °F °C psig (kPa) -20 to 150 (-30 to 66) 400 (2758) 200 250 300 350 (93) (121) (149) (177) 385 365 335 300 (2655) (2586) (2300) (2068) Female NPT x Union Male FxUM Angle Female x Union Male AFxUM Action Table 2. Product Part Numbers.
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Technical Instructions Document Number 155-196P25 February 9, 2018 Powermite 599 MT Series Terminal Unit 2-way Valves Table 3. Maximum Water Capacity - U.S. Gallons per Minute. Valve Size 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.
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Powermite 599 MT Series Terminal Unit 2-way Valves Technical Instructions Document Number 155-196P25 February 9, 2018 Table 5. Maximum Steam Capacity - Pounds per Hour. Inlet Pressure - psig Valve Size 2 5 10 15 Pressure Differential - psi Inches Cv/1 1 2 1 2 0.4 4.8 6.7 5.2 7.3 0.63 7.5 10.5 8.2 11.4 13.8 15.7 17.4 12.9 17.8 21.3 24.1 1.0 12.0 16.6 13.0 18.2 22 25 28 20 28 34 38 42 38 1.6 19.1 27 21 29 35 40 44 33 45 54 61 67 2.
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Technical Instructions Document Number 155-196P25 February 9, 2018 Powermite 599 MT Series Terminal Unit 2-way Valves Figure 1. Water Capacity Graph. Selection Example Select a valve given: See Figure 1. • Required flow = 20 gpm. ‚ Desired pressure drop = 5 psi. ƒ Choose a 1-inch (25-mm) valve, Cv 10. Page 6 Siemens Industry, Inc.
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Powermite 599 MT Series Terminal Unit 2-way Valves Technical Instructions Document Number 155-196P25 February 9, 2018 Table 7. Close-off Pressures for Electronic Actuators. Valve Size Inches (mm) Action NC 1/2 (15) 1/2 (15) 0.4< Cv <1.6 (0.34< Kvs <1.37) 2.5< Cv <4 (2.15< Kvs <3.44) SAS psi (kPa) SSC psi (kPa) 95 (655) 95 (655) 50 (345) 50 (345) 40 (276) 40 (276) 160 (1103) 120 (828) 85 (586) 65 (448) 70 (482) 55 (379) 3/4 (20) 1 (25) 1/2 0.4< Cv <1.6 (15) (0.34< Kvs <1.37) NO 1/2 2.
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Technical Instructions Document Number 155-196P25 February 9, 2018 Powermite 599 MT Series Terminal Unit 2-way Valves Figure 2. Close-off Pressures. Operation 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.
PAGE 9
Powermite 599 MT Series Terminal Unit 2-way Valves Sizing, continued Technical Instructions Document Number 155-196P25 February 9, 2018 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.
PAGE 10
Technical Instructions Document Number 155-196P25 February 9, 2018 Powermite 599 MT Series Terminal Unit 2-way Valves Service Replace the valve if inoperable. Disposal Do not dispose of the valve as household waste. • • Special handling of individual components may be mandated by law or make ecological sense. Observe all local and currently applicable laws and regulations.
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Powermite 599 MT Series Terminal Unit 2-way Valves Technical Instructions Document Number 155-196P25 February 9, 2018 Table 10. Actuator Dimensions and Recommended Service Envelope. Dimensions in Inches (Millimeters). Actuator Actuator Prefix Code 599-01088 2-Inch Pneumatic 256 257 258 Valve Size 1/2 (15) SAS NSR SAS SR SSC 363 364 365 366 259 260 261 262 Siemens Industry, Inc.
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Technical Instructions Document Number 155-196P25 February 9, 2018 Powermite 599 MT Series Terminal Unit 2-way Valves Female NPT × Female NPT F×F Female NPT × Union Male F×UM Angle Female × Union Male AF×UM Table 11. 2-way Valve Dimensions.