Resilient Seat Butterfly Valves

VFF1

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

SPECIFICATIONS

 

Body Pattern

2 way (S/R NO)

DIMENSIONS DIAGRAM

Valve Action

Normally Open

Connection Type

Lugged

Controlled Medium

Chilled and hot water, up to

 

50% glycol

Actuator Control Type

Pneumatic, Spring Return

Type of Enclosure

Pneumatic

Flow Characteristic

Modified Equal Percent

Mounting

ANSI Flanged

G*

L2

L1

L1 L2

H

F

D

R

T

ts

Static Pressure Rating (max)

250 psi (1724 kPa)

Maximum Differential Pressure Ratings

 

(Close-off)

175 psi (1206 kPa)

Actuator Ambient Temperature Ratings -20

F to 150

F (-29

C to 66 C)

Temperature Range

-40

F to 250

F (-40

C to 121 C)

Materials

 

 

 

 

(Body)

Polyester-coated cast iron

 

ASTM A126 Class B

(Stem)

416 stainless steel

 

(Seat)

Peroxide-cured EPDM resilient

 

seat

 

 

(Plug/Ball/Disc)

Nylon 11-coated ductile iron

 

FULL CUT DISK, 175 PSI CLOSE-OFF

UNDER CUT DISK, 50 PSI CLOSE-OFF**

 

PIPE SIZE

 

(VFF1/2_W1Y8P/PP)

 

 

(VFF1/2_V1Y8P/PP)

 

 

IN. [mm]

G

H

HP

L1

L2

G

H

HP

L1

L2*

 

2

 

 

 

 

 

 

 

 

 

 

 

[DN50]

 

 

 

 

 

 

 

 

 

 

 

2-1/2

5-5/8

3-1/8

6-1/4

16

 

 

 

 

 

 

 

[DN65]

[144]

[79]

[160]

[406]

 

 

 

 

 

 

 

3

 

 

 

 

3

 

 

 

 

 

 

[DN80]

 

 

 

 

[76]

 

 

 

 

 

 

4

7-1/4

 

10

20

 

5-5/8

3-1/8

6-1/4

16

 

 

[DN100]

[186]

 

[254]

[506]

 

[144]

[79]

[160]

[406]

 

 

5

 

 

 

 

 

7-1/4

 

10

20

 

 

[DN125]

 

 

 

 

 

[186]

 

[254]

[506]

3

 

6

9

6-7/8

10-1/8

22-3/4

 

 

 

 

 

[76]

 

[DN150]

[227]

[175]

[257]

[578]

 

 

 

 

 

 

 

8

 

 

 

 

22-3/4

9

6-7/8

10-1/8

22-3/4

 

 

[DN200]

 

 

 

 

[578]

[227]

[175]

[257]

[578]

 

 

10

 

 

 

 

 

 

 

 

 

22-3/4

 

[DN250]

LOW PRESSURE ACTUATORS NOT

 

 

 

 

[578]

 

12

 

 

 

 

 

 

AVAILABLE IN THESE, AND LARGER BODY SIZES.

 

 

 

 

[DN300]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

**NOTE: VALVE SIZES 2 TO 3 INCHES ARE AVAILABLE ONLY WITH FULL CUT DISKS.

 

M2701

VALVE STROKE IS LIMITED TO 70 DEGREES.

 

 

 

 

 

l Sheetta submi

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Honeywell MS4103 manual VFF1, 145