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3-way (A-B-AB) 2in flange butterfly valve

VFF3FW1Y2B/M

3-way (A-B-AB) 2in flange butterfly valve

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Overview

Resilient seat three-way valves provide control for HVAC system applications including chilled water, hot water, cooling tower water, and thermal storage systems.

Product Specifications

Dimensions (in.)
Assembly--Length: 11 in.; Height: 15-5/16 in.; Width: 6-13/16 in.; Neck: 5-1/2 in.; Radius; 2-1/4 in.
Dimensions (mm)
Assembly--Length: 279 mm; Height: 389 mm; Width: 173 mm; Neck: 140 mm; Radius; 58 mm
Weight (lb)
43.7 lb
Weight (kg)
19.9 kg
Mounting
ANSI Flanged
Approvals, Underwriters Laboratories Inc.
C/US UL873, Plenum Rated
Shipping and Storage Temperature Range (F)
-40 F to 250 F
Shipping and Storage Temperature Range (C)
-40 C to 121 C
Approvals, CE
Compliant
Enclosure
NEMA 2 housing
Ambient Temperature Range (F)
Actuator-- -5 F to 140 F
Ambient Temperature Range (C)
Actuator-- -20 C to 60 C
Connection Type
Lugged
Body Pattern
3 way (A-B-AB porting)
Pipe Size (inch)
2 in.
Pipe Size (DN)
DN50
Maximum Differential Pressure Ratings (Close-off) (psi)
175 psi
Maximum Differential Pressure Ratings (Close-off) (kPa)
1206 kPa
Capacity (Cv)
at 60 degrees stroke--61 Cv; at 90 degrees stroke--144 Cv
Capacity (Kv)
at 60 degrees stroke--53 kvs; at 90 degrees stroke--125 kvs
Valve Action
Normally Closed
Valve Type
Butterfly
Controlled Fluid
Chilled or hot water with up to 50% Glycol. Not for use with steam or fuels.
Materials (Body)
Polyester-coated cast iron ASTM A126 Class B
Materials (Seat)
Peroxide-cured EPDM resilient seat
Materials (Stem)
416 Stainless Steel
Flow Characteristic
Modified Equal Percent
Actuation
Electric modulating, Non-Spring Return Modulating control
Static Pressure Rating (psi)
250 psi Maximum
Static Pressure Rating (kPa)
1724 kPa Maximum
Flange Bolts
4, Flange Bolt Thread--5/8 in. -11 pitch
Materials (Plug/Ball/Disc)
Nylon 11-coated ductile iron (optional: Aluminum, bronze, and stainless steel)