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Overview

Resilient seat two-way butterfly valves provide control for heating, ventilating and air conditioning (HVAC) systems. Applications include chilled water, hot water, cooling tower water and thermal storage systems.

Product Specifications

Application
HVAC
Includes
Position Indication ; 5 mm hex crank (3/16” Allen), supplied for manual operation
Item Type
Product
Mounting
ANSI Class 125/150 flange compatible
Frequency
50 Hz ; 60 Hz
Approvals, Underwriters Laboratories Inc.
C/US Listed
Voltage
24 Vac ; 24 Vdc
Approvals, CE
Certified
Enclosure
NEMA 2 IP54
Ambient Temperature Range (F)
Actuator-- -22 F to 122 F
Ambient Temperature Range (C)
Actuator-- -30 C to 50 C
Connection Type
Lugged
Body Pattern
2-way
Pipe Size (inch)
2 in.
Pipe Size (DN)
DN50
Fluid Temperature (C)
-30 C to 121 C
Fluid Temperature (F)
-22 F to 250 F
Maximum Differential Pressure Ratings (Close-off) (psi)
200 psi
Maximum Differential Pressure Ratings (Close-off) (kPa)
1380 kPa
Capacity (Cv)
at 60 degrees stroke--44 Cv; at 90 degrees stroke--115 Cv
Capacity (Kv)
at 60 degrees stroke--38 kvs; at 90 degrees stroke--99 kvs
Valve Action
Normally Open
Valve Type
Butterfly
Controlled Fluid
Chilled or hot water with up to 60% Glycol. Not for use with steam or fuels.
Materials (Body)
Epoxy powder coated ductile iron ASTM A536
Materials (Seat)
EPDM
Materials (Stem)
416 stainless steel
Flow Characteristic
Modified Equal Percentage
Actuation
MBS7L3F2/U Modulating, spring fail-safe, actuator included
Static Pressure Rating (psi)
232 psi
Static Pressure Rating (kPa)
1600 kPa
Flange Bolts
4, Flange Bolt Thread--0.625 in. -11 pitch
Materials (Plug/Ball/Disc)
304 stainless steel
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