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Relief Valve – 814

$196.21 – $846.07

This reduced capacity relief valve has an angle style and larger inlet and outlet size. The ASME certified slope of 3.29 yields, for example, a capacity of 72.8 lbs per minute of air @ 250# set pressure.

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Description

 

Part #  NB Cert. #  Body Material  Wt (lbs) Size 
814 51130 Ductile Iron Casting 60-40-18 5.0 3/4” FNPT inlet x 1 ¼” FNPT outlet

#814 safety relief valve can be mounted on the following manifolds:

  • #844- ¾ ” x ¾ ” x ¾ ” FNPT (hand wheel)
  • #844F- ¾ ” x ¾ ” x ¾ ” FNPT (seal cap)
  • #847M- ¾ ” x ¾ ” x ¾ ” FNPT (seal cap)
  • #849M- 1” x ¾ ” x ¾ ” FNPT (seal cap)
814 Schematic

Design Features
  • National Board Certification #:   51130
  • Set Pressure Range:      75-400 PSI in 25 PSI  increments.
    • Special Settings can be made at no extra charge and typically takes 1-2 extra days;
  • Each valve undergoes 3 separate test sequences for set pressures and seals, and then are lock-wired for security.
  • All Cyrus Shank relief valves are manufactured in accordance with ASME Boiler and Pressure Vessel Code Section VIII Division I and stamped with the ASME Certification Mark with UV Designator.
  • All Cyrus Shank relief valve capacities are certified by the National Board of Boiler and Pressure Vessel Inspectors and stamped with the NB Certification Mark.
814 Series Capacity Chart Slope = 3.29 SCFM/PSIA
Standard Conditions [60 ˚F, 1 Atm]
Set Pressure (PSIG) Air SCFM Air lb/min Air lb/hr NH3 lb/min NH3 lb/hr R-22 lb/min R-22 lb/hr R-290 lb/min R-290 lb/hr R-404A lb/min R-404A lb/hr
75 319.8 24.4 1464.7 18.7 1123.0 42.2 2530.5 30.1 1807.1 44.8 2688.4
100 410.3 31.3 1879.1 24.0 1440.7 54.1 3246.5 38.6 2318.4 57.5 3449.0
125 500.7 38.2 2293.5 29.3 1758.4 66.0 3962.4 47.2 2829.7 70.2 4209.6
150 591.2 45.1 2707.8 34.6 2076.1 78.0 4678.3 55.7 3340.9 82.8 4970.3
175 681.7 52.0 3122.2 39.9 2393.8 89.9 5394.3 64.2 3852.2 95.5 5730.9
200 772.2 58.9 3536.6 45.2 2711.5 101.8 6110.2 72.7 4363.5 108.2 6491.5
225 862.6 65.9 3951.0 50.5 3029.2 113.8 6826.2 81.2 4874.8 120.9 7252.1
250 953.1 72.8 4365.4 55.8 3347.0 125.7 7542.1 89.8 5386.0 133.5 8012.7
275 1043.6 79.7 4779.8 61.1 3664.7 137.6 8258.0 98.3 5897.3 146.2 8773.3
300 1134.1 86.6 5194.2 66.4 3982.4 149.6 8974.0 106.8 6408.6 158.9 9533.9
325 1224.5 93.5 5608.6 71.7 4300.1 161.5 9689.9 115.3 6919.9 171.6 10294.5
350 1315.0 100.4 6023.0 77.0 4617.8 173.4 10405.9 123.9 7431.1 184.3 11055.1
375 1405.5 107.3 6437.3 82.3 4935.5 185.4 11121.8 132.4 7942.4 196.9 11815.8
400 1496.0 114.2 6851.7 87.6 5253.2 197.3 11837.7 140.9 8453.7 209.6 12576.4

Additional information

Inlet Port Size

3/4"
Outlet Port Size

1 1/4"
Material Type

Ductile
Assembly Options

Dual Assembly With Unions, Dual Assembly Without Unions, Single Valve

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