Powers 596 SI Flowrite II Heavy Duty Control Valves - Manual

UTILITY IRON BODY SERIES
DESCRIPTION
The rugged Powers Type SI (single seat iron body) valve is primarily used for
steam and water modulating applications with moderate pressure drops. The
equal percent plug provides excellent control characteristics and is more
tolerant of oversizing than linear or quick-opening plugs. The SI’s control and
close off characteristics are particularly well-suited to commercial water
heaters, boilers, and industrial utility applications. The SI valve is available
with the Powers 46 in.
2 . and 100 in. 2 . actuators. Actuator selection depends
on valve size and flowing system pressure drop across the valve.
SPECIFICATIONS
VALVE
Body Sizes:
2 1/2" – 6"
Body Material: Cast Iron (per ASTM A126-93 Class B)
End Connections: 125 # Flanged (per ANSI B16.1–1993)
Trim: Bronze Composition Disc or Stainless Steel Teflon disc
Packing: Spring loaded TFE packing
Seat Leakage: ANSI Class IV < 0.01% leakage
Cv Range: 56-350
Rangeability: 75:1
Characteristics: Equal Percent
Maximum Pressure: 200 psi @ Temp. <150°F
Max. Differential Press.: 50 psi for Bronze, 100 psi for Stainless Steel
Temperature Range: 40° – 281° F
ACTUATOR
Housing Construction:
Die cast aluminum
Diaphragm Construction: Replaceable molded neoprene
Diaphragm Area: 46 in. 2 , 100 in. 2
Maximum 35 psi and 200°F
Pressure and Temp.:
Ambient Shipping Limits: - 40 to 220° F
Ambient Operating Limits: - 20 to 220° F
Air Connection: 46 in. 2 1/4” NPT
100 in. 2 1/8” NPT
Position Indication: 1/8” increments
Mounting: In any upright position with actuator head
above 45° of the center line of the valve
body. Actuator head may be swiveled to any
convenient position.
TABLE OF CONTENTS
Description ............................................................................ 1
Specifications ............................................................................... 1
Application Information
...............................................................
2
Theory of Operation ..................................................................... 2
Valve Sizing and Selection ............................................................. 3-4
Close Off Data
..........................................................................
5
Temperature/Pressure Ratings .................................................... 5
Dimensional Data ........................................................................... 6
Installation .................................................................................... 7
Maintenance
.................................................................................
7
Ordering Information ....................................................................... 8
Sizes Actuators Available
2 1/2” 46 in. 2 or 100 in. 2 Diaphragm
3” 46 in. 2 or 100in. 2 Diaphragm
4” 46 in. 2 or 100 in. 2 Diaphragm
5” 100 in. 2 Diaphragm
6” 100 in. 2 Diaphragm
Normally-closed 596SI with 46 in. 2 actuator shown
Form TI 596SI v2
TECHNICAL INSTRUCTIONS
Iron Body Series 596 SI
UTILITY IRON BODY CONTROL VALVES
®
CALIFORNIA PROPOSITION 65 WARNING
WARNING: This product contains chemicals
known to the State of California to cause cancer
and birth defects or other reproductive harm.
(California law requires this warning to be given
to customers in the State of California.)
For more information: www.wattsind.com/prop65