Danco Pressure Relief Valves

Bronze Semi-Nozzle Valves

DANCO BRONZE SEMI-NOZZLE PRESSURE RELIEF VALVE WITH FLANGED CONNECTIONS (SIZES 2½" - 8")

Flanged Connections

Model Descriptions:

Shipboard pressure relief valves in full conformance with the applicable ASTM and military specifications. Sizes 2 1/2" through 8". Flanged connections, bronze construction with semi-nozzle and bolted bonnet design.

Applications:

  • 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)

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-seat design.
  • We warranty materials and workmanship against defects for two years after the date of installation. This comprehensive warranty ensures complete manufacturer support.
  • Danco Valve Company wire seals all valves 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

STEM ASSEMBLY: CRES/316 ASTM A276

SPRING: CRES/316 ASTM A313

DISC ASSEMBLY:
___Disc: Monel, QQ-N-288
___Disc Insert: Teflon®/AMS 3660
___Disc Insert Retainer: Monel, QQ-N-281

Optional Materials:

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

End Connections, Weights & Dimensions

Mil-PRF-20042
150 #
Mil-PRF-20042
250 # & ANSI Class 150
Size
Approx. Weight
A
B
C
A
B
C
2 1/2"
80 lbs.
5.5
5.5
19.0
5.5
5.5
19.0
3"
80 lbs.
6.0 5.5 19.5 6.0 5.5 19.5
4"
170 lbs.
6.5 6.5 24.0 7.0 7.0 24.0
4" x 6"
200 lbs.
9.0 6.5 30.0 9.0 6.5 30.0
5"
182 lbs.
6.5 6.5 24.0 7.0 7.0 24.5
6" x 8"
450 lbs.
10.0 9.5 41.0 10.0 9.6 41.5
8"
600 lbs.
10.0 10.0 49.0 10.0 10.0 49.5

The dimensions noted above are in conformance with ASTM F1508. Center-to-face dimensions can be modified to meet your specific requirements.