Danco Bronze Semi-Nozzle Pressure Relief Valve with Union End Silver Braze Connections (Sizes ¼” – 2”)


Product Summary

Model Descriptions:

Drawing (PDF)

Shipboard pressure relief valves in full conformance with the applicable ASTM and military specifications. Sizes 1/4″ through 2″. Union end silver braze connections, bronze construction with semi-nozzle design and threaded bonnet.


  • ASTM F1508
  • Mil-V-24332 Liquid (latest revision)
  • Mil-V-22549 Air/Gas, (latest revision)
  • Mil-V-20065 Steam (revision C, Type A-2, Class C)


  • 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.
  • 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, Bonnet & Lever Housing: Bronze/ASTM B61
  • Seat: Monel/QQ-N-288/ASTM A494
  • Stem Assembly: CRES/316 A276
  • Spring: CRES/316 ASTM A313
  • Disc Assembly:
    • Disc: Monel, QQ-N-288/ASTM A494
    • Disc Insert: Teflon®/AMS 3660
    • Disc Insert Retainer: QQ-N-281

Optional Materials:

Valve materials can be customized for your specific application or in accordance with specification requirements.

End Connections, Weights & Dimensions:


The dimensions noted above are for ASTM F1508 applications. Center-to-face dimensions can be customized to meet your specific requirements. Dimensions do not include length of the nut or tailpiece.

Create a Semi-Nozzle Part Number


 WARNING: This product can expose you to chemicals including chromium, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.