About Us

   ASC makes acid plant valves, the average size is over 24”. We have over 36 years of experience with acid plant  valves including almost all of the aggressive and high temperature applications imaginable.

   ASC designs & manufactures fabricated Butterfly -- ASCBV for gas duct applications, Multi-Louver --ASCML, Refractory - ASCRBV for boiler outlet, Powercam® BV for blower and gas duct isolation, Flex-Wedge Gate

valves for main compressor isolation and Jug valves for boiler by-pass. They are proven by years of excellent operation in many facilities throughout the world. Improved designs to provide performance for many years of service with little or no maintenance.

   Sizes range from 6"-120", Powercam® 6"-96" (larger per application). Materials of construction for the service conditions, including Carbon & Stainless Steels, Chrome-Molys, Hastelloys, and Inconels.

MATERIALS:

    300  -    750 F                        A-36 Carbon Steel

   750  -  1200 F                        A516 Gr. 70, A387 Grade 2 Class 1 Carbon Steels

   1200 - 1600 F                         304L, 316L Stainless Steels

   1600 - 2200+F                       309, 310, 330, Stainless Steels; Refractory Lined

Materials for the body, disc and shafts are designed for the operating conditions; refer to ASC `Material Selection Chart'. Flanges for in line bolting or in line welding to customer requirements.

SEAT DESIGNS:      Leakage (as a % of flow)

      Swing Thru              3 (throttling)

      Metal Step                1 (isolation/throttling)

      Scissors                   1 (removes build-up)

      Tadpole                    0.25 (clean gas applications)

      Powercam®             0.01 (ANSI CL IV, total circumference seating of SS disc to SS metal seat)     

Stainless steel shafts for optimum strength and long service, taper pins to secure shaft and disc connection. Flanged stuffing boxes w/ grease-purge connection for on line service. Spring loaded flanged packing followers provide constant force on the packing rings and SS lantern ring to provide a tight seal to atmosphere. Stainless steel  lantern ring can be packed w/ high temperature grease or air purged.

ACTUATORS:

  Heavy duty gear operator w/ hand wheel or chain wheel w/ position indicator. Electric or pneumatic operators w/ positioner or to customer requirements, including declutchable pneumatic.

   ASC valves are shipped to almost any location via motor freight, air, rail, and ocean vessel through a network of local freight and freight forwarding companies. Should you have an application please contact us at the above phone or fax numbers or email: sales@asc-valves.com    Web site: www.asc-valves.com