Data Sheet for Product

Submittal Sheet
Document No. 154-087
May 18, 2021
Pressure Independent Control Series
2-Way Valves and
Electronic Valve Actuators
Siemens Industry, Inc.
Description
The 1/2- to 1-1/4-inch Pressure Independent Control Valves
have a 5 or 5.5 mm stroke, and work with the SSD Series
Electronic Actuators. The 1-1/2 to 2-inch normally open
valves have a 15 mm stroke and work with the 599-0361XNX
Series Rack and Pinion spring return actuators, and the SAY
Series Electronic Actuators. SAY Actuators for 1-1/2- and 2-
inch Normally Open Valves can also be set for Normally
Closed operation (reverse acting). All actuators require a 24
Volt power supply to provide floating or 0 to 10 Vdc control.
Typical applications include control of hot or chilled water or
water-glycol solutions up to 50% in closed loop systems.
Features
The Pressure Independent Control Valves include a pressure
regulator, a flow limiter, and a control valve in a single device.
All actuators have a direct-coupled installation, manual
override and visual position indication.
Product Numbers
Use the product numbers in the tables to order the valve and
the actuator assembled together. The product number
consists of a 3- or 5-digit prefix code, a hyphen, a 5-digit
code, a hyphen, and a 1 to 2-digit suffix with or without a
decimal. The prefix specifies an actuator. The middle code
specifies the valve body. The suffix specifies the factory
preset maximum GPM flow setting. See Table 2 through
Table 10.
3-or 5-Digit
Actuator Prefix
Code
5-Digit Valve
Body Code
Technical Data
Typical Specifications
Flow shall be varied by actuator position. At any given
position, flow through the valve shall not vary more than ±5%
due to system pressure fluctuations across the valve in the
selected operating range. Valves shall be pressure
independent between a differential pressure of 2.3 or 5 PSID
(depending on valve size) and 58 PSID. Length of stroke shall
be consistent and independent of flow setting.
Valve Specifications
Body material: Brass (1/2- to 1-1/4-inch)
Ductile Iron (1-1/2- and 2-inch)
Stem: Stainless Steel
Line size: 1/2-inch to 2-inch
(15 mm to 50 mm)
Action: 2-Way
Valve body rating: ANSI 250
Close-off pressure/Leakage rate:
1/2- to 1-1/4-inch, NO 200 psi/ANSI Class IV (0.01%)
1-1/2 and 2-inch NO/NC 100 psi/ANSI Class IV (0.01%)
1/2- to 1-1/4-inch, NC 45 psi/ANSI Class IV (0.01%)
Medium temperature range: 34°F to 248°F (1°C to 120°C)
Flow characteristic: Linear
Connection: NPT threaded
Rangeability 100:1
Actuator Specifications
Operating voltage:
SSD81U/SSD81.5U 24 Vac
SSD61U 24 Vac/dc
SSD61.5U 24 Vac
599-0361XNX 24 Vac/dc
SAY 24 Vac/dc
Frequency: 60 Hz
Power consumption (normal operation):
SSD81U 0.8 VA
SSD81.5U 2 VA
SSD61U 2.5 VA
SSD61.5U 2 VA
SAY61.03U 8 VA
SAY81.03U 5 VA
599-0361XNX 3.5 VA
Signal:
SSD81U, SSD81.5U Floating
SAY81.03U,
599-03616NX
SSD61U, SSD61.5U, 0 to 10 Vdc
599-03617NX
SAY61.03U 0 to 10 Vdc or 4 to 20 mA
Run time (in seconds): Stroke
5/5.5 mm 15 mm
SSD81U 150
SSD81.5U 125
SSD61U 90
SSD61.5U 30
SAY 30
599-0361XNX 60
Force:
SSD (NSR) >56 lb (250 N)
SSD (SR) 67 lb (300 N)
SAY 45 lb (200 N)
599-0361XNX < 155 lb (622N)
Additional References:
Technical Instructions
PICV Valves 155-774
SSD Actuators 155-773
SAY Actuators 155-580, 155-581
599-0361XNX A6V11637981
Agency Certification:
UL Meets UL 873
cUL Certified to Canadian
Standard C22.2 No. 24.93
Mounting Location NEMA 1 (Interior only)
231-04300-2.5

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