Danco D45MS

Model Descriptions:


Drawing (PDF)

Shipboard air compressor back pressure relief valve in full conformance with Mil-V-22549. Connections are 3/4″ MS thread per MS16142 on both the inlet and outlet. Stainless steel construction, top guided with a metal-to-metal seating surface. 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 hard-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: CRES 303/ASTM A743
  • Cap: Naval Brass/ASTM B21
  • Bottom & Top Disc: CRES 304/ASTM A276
  • Bottom Spring: CRES 316/ASTM A313
  • Top Spring: Chrome Vanadium/ASTM A231 Zinc Plated

Weights & Dimensions:

  • Overall Height: 10.0″
  • Center-to-Inlet Face: 3.75″
  • Center-to-Outlet Face: 1.5″
  • Unit Weight: 5 LBS.

DANCO Valve Identification System:


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