09/03/2017

VALVES Forged Valves | Check Valves – Overview

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  1. Body   The body is forged steel and designed to the basic dimensional requirements of the applicable specifications such as API 602 and ASME B16.34. The body is available in both the full or conventional port design. It is also available in either T-pattern or Y-pattern configurations.
  2. Cover   The cover is forged steel and designed to the basic dimensional requirements of the applicable specifications such as API 602 and ASME B16.34.
  3. Body-Cover Joint   Two different cover joint designs are available. These are either the bolted cover or the threaded and seal welded type.
  4. Gasket   The bolted cover joint design valve uses a contained, controlled compression, spiral wound type gasket.
  5. Cover Bolting   The cover bolting is manufactured of alloy steel in accordance with the requirements of the applicable specifications such as API 602 and ASME B16.34.
  6. Seat
  The body seat for the piston and ball check valves is an integral weld overlay and is part of the valve trim. The swing check valve is supplied with a separate seat ring which is pressed into the valve body and wedged into place, forming a seal with the body.
  7. Piston, ball or disc
  The piston, ball or disc is forged steel and is part of the valve trim. The seating surface of the piston and ball check is of the tapered or plug type design. The seating surface of the swing check is of the flat seat design.
  8. Spring   The spring is optional and supplied only upon request.