Tadevalve | Products | Industrial Valves | Butterfly Valve
Plastic Lined Butterfly Valve DC21
Size : DN50-DN900
Body : WCB, Stainless Steel
Liner : PTFE, PTFE-T, PTFE-AS, PVDF, UHMWPE
Encapsulated : PTFE, PFA, ETFE, FEP, PVDF, PP
Stem : SS410, SS304, 17-4 PH
Operation : Bare stem/ Lever/ Gear/ electric actuator/ pneumatic actuator
Product information
Plastic Lined Butterfly Valve- Split body - Series DC21
(DN50-DN900/ 2"-36")
Available style: wafer butterfly valve -DC217
Lug butterfly valve -DC218
Flanged butterfly valve-DC219
The design of the Series DC21 plastic lined butterfly valve includes all wetted surfaces of the split body protected by plastomer. Available in wafer, lug and flange body styles for use in a wide variety of applications. The plastic linings on the disc and the body provides exceptional resistance to chemical and thermal attack.
Referred parts of Materials:
Part Name Materials Body Ductile lron, Carbon Steel, Stainless Steel Disc
Carbon Steel+PTFE/PFA/FEP, Stainless Steel+PTFE/PFA/FEP
Stem
Stainless Steel
Seat
PTFE/PFA/FEP
Elastic Spacer Silicone Rubber
Gland Stainless Steel
Belleville Spring
Stainless Steel
Axle sleeve Stainless Steel
Part Name
Materials
Body
Ductile lron, Carbon Steel, Stainless Steel
Disc
Carbon Steel+PTFE/PFA/FEP, Stainless Steel+PTFE/PFA/FEP
Stem
Stainless Steel
Seat
PTFE/PFA/FEP
Elastic Spacer
Silicone Rubber
Gland
Stainless Steel
Belleville Spring
Stainless Steel
Axle sleeve
Stainless Steel
Main Features
-
Large selection of different materials and trims - blow-out proof one piece disc/stem
- No position restrictions in piping (horizontal/vertical)
- Excellent shut-off (bubble tight) and high Cv (Kv) values
- Upper stem seal system prevents any environmental contaminants from entering the stem bore
- Extended neck design allows for piping insulation and enables easy access for actuator mounting
- PTFE encapsulated steel bearing ensures precision alignment of the upper and lower stem
- Top flange acc. to ISO 5211 allows connection with various kinds of actuators (electric, pneumatic, hydraulic etc.)
Technical data
- Face to face according to FN558-1 Series 20/ ASME B16.10
- Flange according to DIN PN10/16, ASME class 150lbs
- Body: Carbon Steel 1.0619(A216 WCB) or Stainless Steel 1.4408(A351 CF8M), 1.4404(A276 316L), with integrated ISO flange
- Liner:PTFE, PTFE-T, PTFE-AS, PVDF, UHMWPE
- Disc encapsulated: PTFE, PFA, ETFE, FEP, PVDF, PP
- Disc solid(polished): SS Duplex, Titanium Gr. 2/ Gr. 7, C-276, C-2000
- Elastomer Energizer: VMQ, FPM, EPDM
- Higher pressure ratings possible
