Danco Steel Enclosed Spring Semi-Nozzle Pressure Relief Valve (Sizes ¼” – 8”)

steel-semi-enclosed_diagram
Model Descriptions:

Shipboard pressure relief valves in full conformance with the applicable ASTM and military specifications. Sizes 1/4″ through 8″. Steel construction with flanged connections, enclosed spring bonnet and semi-nozzle design.

Applications:

  • ASTM F1508
  • Mil-V-24332 Liquid (latest revision)
  • Mil-V-22549 Air/Gas, (latest revision)
  • Mil-V-20065D Steam (Type II, Composition D)

Features:

  • 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 or hard 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: Steel/WCB ASTM A216
  • Seat: CRES/CF8M ASTM A351
  • Stem Assembly: CRES/316 ASTM A276
  • Spring: CRES/316 ASTM A313
  • Disc Assembly:
    • Disc: CRES/CF8M ASTM A351
    • Disc Insert: Teflon®/AMS 3660
    • Disc Insert Retainer: CRES/304 ASTM A276

Optional Materials:

Valve materials can be customized for your specific application.

Weights & Dimensions

ASME B16.5
Class 150
Size Approx. Weight A B C
1/4″ 13 lbs. 3.0 3.0 13.0
3/8″ 13 lbs. 3.0 3.0 13.0
1/2″ 13 lbs. 3.0 3.0 13.0
3/4″ 13 lbs. 3.0 3.0 13.0
1″ 30 lbs. 3.5 3.5 15.0
1 1/4″ 35 lbs. 3.8 3.8 16.0
1 1/2″ 42 lbs. 4.7 4.7 17.0
2″ 59 lbs. 4.7 4.7 18.0
2 1/2″ 80 lbs. 5.5 5.5 19.0
3″ 80 lbs. 6.0 5.5 19.5
3 1/2″ 95 lbs. 6.0 5.5 19.5
4″ 170 lbs. 7.0 7.0 24.5
5″ 182 lbs. 7.0 7.0 24.5
6″ x 8″ 450 lbs. 10.0 9.6 41.0
8″ 600 lbs. 10.0 10.0 49.5

Alternative flange ratings are available.
Center-to-face dimensions can be modified to meet your specific requirements.