The Far Eastern long neck series butterfly valves allows top flange and stem to provide full clearance of pipe insulation. They are designed to meet the requirements of industries as oil and gas drilling, chemical plants, refineries, power plants, HVAC, ship building, water and waste water. The BFVs are drop tight pressure rated to 200Psi and are available in sizes 2"to 12". These valves are mount in between ansi 125/150 flanges.
The BUV-LW/LL series butterfly valves equal to DEMCO.
| No |
Description |
Material |
| 1 |
Body |
Cast lron ASTM A126, Ductile Iron ASTM A536, WCB Gr 216A |
| 2 |
Disc |
Ductile Iron (Ni Plated),Ductile Iron (Nylon Coated),Aluminum Bronze, CF8M (316 SS),CF8 (304 SS) |
| 3 |
Shaft |
416 Stainless Steel, 304 Stainless Steel,316 Stainless Steel, Monel* |
| 4 |
Seat |
BUNA-N, EPDM,FKM(Viton) |
| 5 |
Retainer Pin |
ASTM Gr.1065 Steel |
| 6 |
O-ring |
BUNA-N (Viton Optional) |
| 7 |
Bushing |
Aluminium Bronze, PTFE |
| |
Unit: |
inch |
| Size |
1 |
P |
B |
|
C |
L |
S |
n-M |
| 2" |
4.75 |
4.12 |
9.65 |
9.44 |
5.62 |
1.74 |
1.00 |
4-5/8-11 |
| 2.5" |
5.50 |
4.88 |
9.65 |
10.19 |
6.12 |
1.86 |
1.00 |
4-5/8-11 |
| 3" |
6.00 |
5.38 |
9.65 |
10.70 |
6.38 |
1.86 |
1.00 |
4-5/8-11 |
| 4" |
7.50 |
6.88 |
9.65 |
12.00 |
7.12 |
2.11 |
1.00 |
8-5/8-11 |
| 5" |
8.50 |
7.75 |
11.06 |
13.37 |
7.75 |
2.24 |
1.25 |
8-3/4-10 |
| 6" |
9.50 |
8.75 |
11.06 |
14.5 |
8.25 |
2.24 |
1.25 |
8-3/4-10 |
| 8" |
11.75 |
11.0 |
14.96 |
16.94 |
9.44 |
2.54 |
1.38 |
8-3/4-10 |
| 10" |
14.25 |
13.38 |
14.96 |
20.07 |
11.25 |
2.74 |
1.38 |
12-7/8-9 |
| 12" |
17.00 |
16.12 |
22.05 |
23.07 |
12.19 |
3.24 |
1.38 |
12-7/8-9 |
Audited Supplier 
Audited Supplier 
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