WCB Triple Eccentric Lug Butterfly Valve
Product Description
Name:Worm Gear Lug WCB Triple Eccentric Butterfly Valves
Material:Body: WCB; Disc: 6A, Stem: 316. Seat: surface STL,Sealing ring: SS316+STL
Nominal Pressure:150LB
Nominal Diameter:DN250
End Connection:Lug
Structure:Triple Eccentricity
Operation:Worm gear
Valve type:Industrial Valve
Working Temp.:-100℃~+425℃
butterfly valve for chilled water system
Detail Information:
| Model Number: | D671H-150Lb- 16 inch |
Standard or Nonstandard: | API 609 |
Structure: | triple eccentric butterfly valve |
Pressure: | 150LB |
Power: | Pneumatic Operated |
Material: | cast steel A216 Gr. WCB |
Temperature of Media: | -29 Deg. C ~ 200 Deg. C |
Media: | Crude Oil, Natural Gas, etc |
| Port Size: | 16 inch RF flanges |
Material Option:
Carbon steel | A216 Gr. WCB , WCC , WCA , etc |
Low temperature steel | A352 Gr. LCB , LCC , LC1 , etc |
Cr-Mo steel | A217 Gr. WC6 , WC9 , C5 , C12 , C12A , etc |
Stainless Steel | A351 Gr. CF8 , CF8M , CF3 , CF3M , CF8C , etc |
Alloy steel | CN7M alloy 20 , CN3M alloy 20 modified , CT15C , etc |
Super duplex | A995 Gr. 4A , 5A , CE8MN , CD6MN , CD3MN , etc |
Aluminum bronze | B148 C95500 , C95600 , C95800 , etc |
Monel | M30C , M35-1 , CZ100 , etc |
Inconel | CY40 inconel 600 , etc |
Hastelloy | CW2m Hastelly C4 , N12MV Hastelloy B , CW12MW Hastelloy C276 , etc |
Incoloy | CU5MCuC Incoloy 825 , CW6MC Incoloy 625 , etc |
STANDARD MATERIALS OF MAIN PARTS
| ITEM | PART NAME | MATERIAL |
| 1 | Gear Operator | |
| 2 | Packing Flange | WCB |
3 | Stud | CS |
| 4 | Washers | CS |
| 5 | Bolt | CS |
| 6 | Connecting Support | WCB |
| 7 | Packing | Flexible Graphite |
| 8 | Stem | SS410 |
| 9 | Body | CF8M |
| 10 | Sealing Ring | SS304+Graphite |
| 11 | Bolt | SS304 |
| 12 | DISC | CF8 |
| 13 | Pon | SS304 |
| 14 | Disc Flange | SS304 |
| 15 | Bushing | Nitriding |
The stem is offset on both the X (1)and Y (2) axis of the valve's
center line. This produces a cam一like motion. The third offset (3)
consists of an inclined conical profile machined into the valve
sealing surface. This allows rotary engagement and disengagement
of the seat and seal ring without interference. All rubbing
between seat and seal ring is thereby eliminated. Once the seat
and seal ring are fully engaged torque is applied in order to
create a bi一directional, zero leakage, metal-to一metal seal. For
this reason, triple offset valves are often defined as "torque" seated
rather than”position” seated as in the case of resilient or high performance products.
Multi-layer disc sealing ring adopts ss304 and graphite laminated, sealing by the inside graphite, applied for low and middle pressure, as recycle water,swage treatment, city building, etc