VAF Butterfly Valve Specifications

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Parts Description/Specifications


ITEM PART SPECIFICATION
1 VALVE STEM Stainless Steel, ASTM A-582 Type 416
2 CIRCLIP  
3 WASHER  
4 CIRCLIP  
5 WASHER iron
6 BUSHING Teflon-graphite
7 V-PACKING Buna-N
8 VALVE SEAT Buna-N. Epdm
9 VALVE DISC Ductile iron nickel coated, QT500, QT200
10 VALVE BODY QT500, QT200

 

Torque Requirements
Valve Size Seat Material - Buna/EPDM
Dry Service Wet Service
(**opening torque - valve opened under pressure at 150 psi)
(N/M) (in-lbs) (N/M) (in-lbs)
2" 0 0 5 44
2.5" 5 44 10 89
3" 10 89 20 177
4" 15 133 40 354
5" 40 354 80 709
6" 50 443 100 886
8" 80 709 150 1,329
10" 100 886 200 1,772
12" 120 1,063 250 2,215

How To Order
Items in Inventory  
• Size 2" to 24"
• Body Style wafer or lug
• actuator lever or gear
• body material cast iron/epoxy
coated
• disc material ductile iron/nickel
plated
• seat material EPDM/Buna-N
Order examples

 

Order examples:
• 8 inch - lug with lever
• 14 inch - wafer with gear