Valves
Butterfly Type(Lug, Wafer, Dbl Flange)
Check Valve Type
Gate Type
Lever Linkage/Cam Act. Type
Relief Valve Type
Other Types
Butterfly Damper Valves
(Square and Rectangular)
SIZES
12” thru 144” up to 14'
GENERAL DESCRIPTION
Everest manufactures heavy duty dampers to control or shut off process
gas, air, flu gas, or liquids at low pressure. Butterfly dampers provide
excellent efficiency and freedom from in many chemical and petro chemical,
heat recovery, pollution control and water treatment application.
STANDARD MATERIALS
| Body Unit | Carbon Steel, Cor-Ten Steel, Low alloy Steel, Stainless Steel |
| Disc | Carbon Steel, “cor-Ten” Steel, Stainless Steel, Monel, Titanium, etc. |
| Stem | two piece or one piece of 17-4ph, type 304 or316 SS, Monel, Inconel, Hastelloy. |
| Bearings | Bronze, Ductile Iron, Carbon, Stainless Steel, Stellite |
| Outboard Bearings | Optional ball or Roller bearings |
| Stem Seals | Buna “N”, EP, Viton or Teflon O Rings. Asbestos, Graphite Asbestos, TFE Asbestos, Inconel braided Asbestos or Grafoil packing rings. |
| Seat | Buna “N”, EP, Viton |
DESIGN FEATURES
Pressure Rating 0 thru 25 PSIG · Temperature Range 50°F thru
1800°F Body – Flanged End / Wafer Type / Weld End · Seat Arrangements:
Swing Thru-more than 2% leakage · Metal Step Seat 1 to 2% leakage · Tadpole Step
Seat ½ to 1% leakage · Resilient Soft Seat-0 leakage · (Buna “N”, EP, Viton)
