UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

SUBMIT
Already a GlobalSpec user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your GlobalSpec Experience

Finish!
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

- Trained on our vast library of engineering resources.

MSS SP 152

Knife Gate Valves for Double Block and Bleed

active, Most Current
Buy Now
Organization: MSS
Publication Date: 1 January 2017
Status: active
Page Count: 10
scope:

SCOPE AND FIELD OF APPLICATION

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).

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.

Document History

January 1, 2022
Knife Gate Valves for Double Block and Bleed
SCOPE AND FIELD OF APPLICATION This Standard Practice covers cast or fabricated, bonneted or bonnetless knife gate valves designed and manufactured to serve as a “Double Block and Bleed”(a) single...
MSS SP 152
January 1, 2017
Knife Gate Valves for Double Block and Bleed
SCOPE AND FIELD OF APPLICATION 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...

References

Advertisement