Lined butterfly valve

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Lined butterfly valve
Size 50mm~900mm (2"~36")
Working pressure 0.1mbar~10bar
Temperature range -20°C ~ 200°C according to working conditions, other temperatures on request.
Design and Manufacture API609 DIN EN1092 JIS B2032
Face to Face ASME B16.10 DIN EN558.1 JIS B2002
Flange Ends ASME B16.5 DIN 2532 JIS B2212 (150lb, 10k, Pn10)
Visual Inspection MSS Sp54
Testing API 598 DIN 3230 JIS B2003
Pressure & Temperature ASME B16.34
Operator Type Lever/ Gear/ Pneumatic/ Electric
Spark testing 14kv

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The DOXI butterfly valves'special feature is the seat ring design. The 
interference between the disc and the raised central area of the seat 
ring shuts off the flow completely. The resilient elastomeric seat 
cushion ensures reliable shut-off for the life of the valve. 
The upper and lower positions of the seal ring, where the stem passes 
through, use a triple seal design to prevent leakage to the atmosphere.
Triple Seal Prevent Leakage
Primary Seal:    ① Seat. 
Secondary Seal:   ② O ring
Tertiary Seal:    ③ Taper PTFE seal ring


No
Description
Qty.
Materials
Materials According to Norms
ASTM
JIS
DIN
1
BODY
2
Carbon Steel
A216-WCB
G5151 SCPH2
GS-45(1.0446) 
Stainless Steel
A351-CF8
G5121 SCS13A
G-X6CrNiMo1810
Ductile Iron
ASTM A395
FCD400
GGG-40(0.7040)
2
ONE-PIECE DISC
1
Carbon Steel
PTFE /UHMWPE/
PO/PE/FEP/PFA
A216-WCB
G5151 SCPH2 
GS-45(1.0446)
Stainless Steel
A351-CF8
G5121 SCS13A
G-X6CrNiMo1810 
Ductile Iron
A536-60-40-18
FCD350-22
1693-1997GGG-35.3(0.7033)
3 BODY LINER(SEAT)
1 PTFE /UHMWPE/PO/PE/FEP/PFA
- - -
4 ELASTIC SPACER
2 Silicone Rubber
- - -
5 AXLE SLEEVE
4 Carbon Steel+PTFE
1020+PTFE 
S20C+PTFE
C20+PTFE
6 TAPER SEAL CARTRIDGE
2 Carbon Steel
1020 
S20C 
C20
7 TAPER SEAL RING
2 PTFE



8 BELLEVILLE SPRING
4 Spring Steel
E52100 
Su52
100Cr6
9 O-RING
3 VITON



10 HEX BOLT
2 Stainless Steel 
A 182 F304
G4303-SUSF304
X5CrNi18 10 DIN 17440
DOXI butterfly valve Vacuum working

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