Danco D49-30UU

Model Descriptions:


Drawing (PDF)

Shipboard air compressor pressure relief valve in full conformance with Mil-V-22549. Inlet connection is 1/2″ union end silver braze in accordance with Navy standard drawing #803-1385943. Outlet connection is 3/4″ union end silver braze in accordance with Navy standard drawing #803-1385946. Bronze construction, bottom guided with soft-seat design and a threaded cap. Rated to 3000 PSIG.


  • Danco Valves are the industry’s premier mil-spec relief valves. The valves are quick acting, non-chattering and smooth guiding. They also feature optimal sealing tightness with a unique soft-seat design.
  • Shock approved in accordance with Mil-S-901C. Vibration approved in accordance with Mil-Std.-167-1.
  • We warranty materials and workmanship against defects for two years after the date of installation. This comprehensive warranty ensures complete manufacturer support.
  • All valves are wire sealed to prevent unauthorized tampering.
  • For capacity information specific to your application, please contact us.

Standard Materials:

  • Body: Bronze/ASTM B61
  • Bonnet & Cap: Naval Brass/ASTM B21
  • Seat & Stem: CRES 304/ASTM A276
  • Spring: See Chart
  • Disc Assembly:
    • Disc: CRES 303/ASTM A582
    • Disc Insert: Polysulfone/P1700 Natural -11

Weights & Dimensions:

  • Overall Height: 8.5″
  • Center-to-Inlet Face: 3.0″
  • Center-to-Outlet Face: 3.0″
  • Unit Weight: 7 LBS.

Note: Dimensions include Union Nuts & Tailpieces

DANCO Valve Identification System:


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