OPENTECHNICAL PUBLICATION
OT-2026-000000707

Relief valve assembly

Published: 2026-09-15T19:03:16.949017Z
Permanent URL: https://opentechnical.org/p/OT-2026-000000707
Categories: Industrial Motion & Power Transmission > Fluid Power

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ABSTRACT

A relief valve for a backflow preventer includes a plunger, a lock nut, and a
seal. The plunger has a female fastening section and a first seal engagement
surface. The lock nut has a male fastening section and a second seal
engagement surface. The male fastening section is received by the female
fastening section to bring the first seal engagement surface toward the second
seal engagement surface. The seal is positioned between the first seal
engagement surface and the second seal engagement surface.

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OpenTechnical publication OT-2026-000000707
Published 2026-09-15T19:03:16.949017Z
https://opentechnical.org/p/OT-2026-000000707