Media Valve Co., Inc.
Media Valve Co. Inc.

The Manufacturer of Mosites Butterfly Valves

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Typical Specifactions for Mosites Butterfly Valves

Mosites C10/C10N Butterfly Valve
Carbon Steel Body, WAFER or LUG Style ASTM A216 Grade WCB
Carbon Steel “Stressproof” Stem (Fully Keyed to Disc) ASTM A311, Class B, Grade C1144
Carbon Steel Disc Insert 2″ – 16″ ASTM A216 Grade WCB
Carbon Steel Disc Insert 18″ – 36″ ASTM A108 Grade 1018, ASTM 513-5
Molded and Inseparable Bonded Body Liner and Disc Encapsulation ASTM D2000
  • No metal contact with flow stream
  • Hemispherical Ball and Socket Stem seals (uppper and lower)

Delrin Stem Bushings (upper and lower)
Coated with High Gloss Epoxy
Mounted with…

Mosites C30/C30N Butterfly Valve
Carbon Steel Body, WAFER or LUG Style ASTM A216 Grade WCB
Carbon Steel “Stressproof” Stem (Flat Drive Mechanism to Disc) ASTM A311, Class B, Grade C1144
Carbon Steel Disc Insert 2″ – 8″ ASTM A487 AISI 8620 Grade 4 N
Carbon Steel Disc Insert 10″ – 12″ ASTM A108 Grade 1018, ASTM 513-5
Molded and Inseparable Bonded Body Liner and Disc Encapsulation ASTM D2000
  • No metal contact with flow stream
  • Bi-directional stem seals
    • Primary-integral molded O-rings (upper and lower)
    • Secondary-pressure activated Viton stem seal(upper)

Delrin Stem Bushings (upper and lower)
Coated with High Gloss Epoxy
Mounted with…

Mosites A20/A20N Butterfly Valve
Carbon Steel Body, WAFER or LUG Style ASTM A216 Grade WCB
17-4 PH SS Stem (Flat Drive Mechanism to Disc) ASTM A564
316 SS Disc 2″ -12″ ASTM A744 CF3M
Molded and Inseparable Bonded Body Liner ASTM D2000
  • Bi-directional stem seals
    • Primary-integral molded O-rings (upper and lower)
    • Secondary-pressure activated Viton stem seal(upper)

Delrin Stem Bushings (upper and lower)
Coated with High Gloss Epoxy
Mounted with…

Other Available Elastomers
Material Specification No.
Buna-N ASTM D-2000BF715Z
Chlorinated Polyethylene ASTM D-2000CE720Z
EPDM ASTM D-2000CA715Z
Natural Rubber ASTM D-2000AA730Z
Neoprene ASTM D-2000BC715Z
Silicone Ethylene Propylene ASTM D-2000DA715Z
Viton ASTM D-2000HK715Z

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