Language:
    • Available Formats
    • Options
    • Availability
    • Priced From ( in USD )
    • Secure PDF

      Secure PDF Files

      Secure PDF files include digital rights management (DRM) software. DRM is included at the request of the publisher, as it helps them protect their copyright by restricting file sharing. In order to read a Secure PDF, you will need to install the FileOpen Plug-In on your computer. The FileOpen Plug-In works with Adobe Reader and other viewers. Visit FileOpen to see the full list.

        What you can do with a Secure PDF:
      • Print
      • Search
      • Highlight
      • Bookmark
      Please note that some publishers - including BOMA, IADC and NRC - do not allow printing of their documents.

    • 👥
    • Immediate download
    • $94.00
      Members pay $47.00
    • Add to Cart
    • Printed Edition
    • Ships in 1-2 business days
    • $94.00
      Members pay $47.00
    • Add to Cart
    • Printed Edition + PDF
    • Immediate download
    • $136.00
      Members pay $68.00
    • Add to Cart

Customers Who Bought This Also Bought

 

About This Item

 

Full Description

1. SCOPE AND FIELD OF APPLICATION

1.1 This Standard Practice covers cast or fabricated, bonneted or bonnetless knife gate valves designed and manufactured to serve as a "Double Block and Bleed" single valve system in pipelines. These valve types shall have flanged body designs compatible with ASME B16.5 flanges for NPS 2 (DN 50) through NPS 24 (DN 600), ASME B16.47 Series A flanges for NPS 26 (DN 650) through NPS 36 (DN 900), and ASME B16.42 for sizes greater than NPS 36 (DN 900).

1.2 The valves identified in this Standard Practice are intended for use in applications where a "Double Block and Bleed" type of isolation is required, and where two (2) individual isolation valves with a removable or drain-containing spool piece between them is typically used.

NOTE: For the purposes of this Standard Practice, "Double Block and Bleed" refers to a valve (or valve application) with two seating surfaces that, in the closed position, provides a seal against pressure from both ends of the valve with a means of venting/bleeding the cavity between the seating surfaces.