Safety Relief Valve 6400 Series

The 6400 series of Safety Relief Valves is designed with API 526 standard piping configurations.

Performance Features

  • Sizes from 1” x 2” to 12” x 16” (25mm x 50mm to 300mm x 400mm)
  • Suitable for all overpressure process applications requiring a flanged connection and a re-closeable relief technology
  • Set Pressure available from 15 to 6,000 psig
  • Orifice as per API 526, D to W available
  • Conventional and bellows versions available for applications with variable back pressures
  • Continuous processing (automatic spring reset to continue operation)
  • Suitable Hazardous service
  • ASME “UV” stamped, section XIII
  • European Pressure Equipment Directive “CE” marked

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  • Set Pressures
  • Materials
  • Accessories/Connections
  • Documentation

Set Pressures

6400™ Capabilities
Inlet Size Outlet Size Flow Area Orifice (Designator) Diameter Lift Set Pressure Range Media
1 - 1.5 NPS 2, 3 NPS 0.122 sq in [D] 0.394 in 0.157 in 15-6004 psi Air
1 - 1.5 NPS 2, 3 NPS 0.122 sq in [D] 0.394 in 0.157 in 15-2900 psi Steam
1 - 1.5 NPS 2, 3 NPS 0.222 sq in [E] 0.531 in 0.157 in 15-6004 psi Air
1 - 1.5 NPS 2, 3 NPS 0.222 sq in [E] 0.531 in 0.157 in 15-2900 psi Steam
1.5 NPS 2, 3 NPS 0.352 sq in [F] 0.669 in 0.276 in 15-5003 psi Air
1.5 NPS 2, 3 NPS 0.352 sq in [F] 0.669 in 0.276 in 15-2900 psi Steam
1.5 - 2 NPS 3 NPS 0.563 sq in [G] 0.846 in 0.354 in 15-3698 psi Air
1.5 - 2 NPS 3 NPS 0.563 sq in [G] 0.846 in 0.354 in 15-2900 psi Steam
1.5 - 2 NPS 3 NPS 0.887 sq in [H] 1.063 in 0.433 in 15-2755 psi Air
1.5 - 2 NPS 3 NPS 0.887 sq in [H] 1.063 in 0.433 in 15-2775 psi Steam
2 - 3 NPS 3, 4 NPS 1.407 sq in [J] 1.339 in 0.512 in 15-2697 psi Air
2 - 3 NPS 3, 4 NPS 1.407 sq in [J] 1.339 in 0.512 in 15-2697 psi Steam
3 NPS 4, 6 NPS 2.046 sq in [K] 1.614 in 0.551 in 15-2219 psi Air
3 NPS 4, 6 NPS 2.046 sq in [K] 1.614 in 0.551 in 15-2219 psi Steam
3 - 4 NPS 4, 6 NPS 3.166 sq in [L] 2.008 in 0.63 in 15-1494 psi Air
3 - 4 NPS 4, 6 NPS 3.166 sq in [L] 2.008 in 0.63 in 15-1494 psi Steam
4 NPS 6 NPS 4.025 sq in [M] 2.264 in 0.748 in 15-1102 psi Air
4 NPS 6 NPS 4.025 sq in [M] 2.264 in 0.748 in 15-1102 psi Steam
4 NPS 6 NPS 4.986 sq in [N] 2.52 in 0.787 in 15-1001 psi Air
4 NPS 6 NPS 4.986 sq in [N] 2.52 in 0.787 in 15-1001 psi Steam
4 NPS 6 NPS 7.218 sq in [P] 3.031 in 0.945 in 15-1001 psi Air
4 NPS 6 NPS 7.218 sq in [P] 3.031 in 0.945 in 15-1001 psi Steam
6 NPS 8 NPS 12.174 sq in [Q] 3.937 in 1.181 in 15-595 psi Air
6 NPS 8 NPS 12.174 sq in [Q] 3.937 in 1.181 in 15-595 psi Steam
6 NPS 8, 10 NPS 17.53 sq in [R] 4.724 in 1.339 in 15-305 psi Air
6 NPS 8, 10 NPS 17.53 sq in [R] 4.724 in 1.339 in 15-305 psi Steam
8 NPS 10 NPS 28.497 sq in [T] 6.024 in 1.654 in 15-305 psi Air
8 NPS 10 NPS 28.497 sq in [T] 6.024 in 1.654 in 15-305 psi Steam

 

Inlet Size Outlet Size Flow Area Orifice (Designator) Diameter Lift Set Pressure Range Media
1 - 1.5 NPS 2, 3 NPS 0.122 sq in [D] 0.394 in 0.071 in 15-6004 psi Water
1 - 1.5 NPS 2, 3 NPS 0.222 sq in [E] 0.531 in 0.209 in 15-6004 psi Water
1.5 NPS 2, 3 NPS 0.362 sq in [F] 0.669 in 0.26 in 15-5003 psi Water
1.5 - 2 NPS 3 NPS  0.563 sq in [G] 0.846 in 0.394 in 15-3698 psi Water
1.5 - 2 NPS 3 NPS 0.887 sq in [H] 1.063 in 0.512 in 15-2755 psi Water
2 - 3 NPS 3, 4 NPS  1.407 sq in [J] 1.338 in 0.551 in 15-2697 psi Water
3 NPS 4, 6 NPS  2.046 sq in [K] 1.614 in 0.63 in 15-2219 psi Water
3 - 4 NPS 4, 6 NPS  3.166 sq in [L] 2.008 in 0.787 in 15-1494 psi Water
4 NPS 6 NPS  4.025 sq in [M] 2.264 in 0.866 in 15-1102 psi Water
4 NPS 6 NPS  4.986 sq in [N] 2.52 in 0.906 in 15-1001 psi Water
4 NPS 6 NPS  7.218 sq in [P] 3.031 in 1.102 in 15-1001 psi Water
6 NPS 8 NPS  12.174 sq in [Q] 3.937 in 1.22 in 15-595 psi Water
6 NPS 8, 10 NPS 17.53 sq in [R] 4.724 in 1.535 in 15-305 psi Water
8 NPS 10 NPS 28.497 sq in [T] 6.024 in 1.929 in 15-305 psi Water

Materials of Construction

Minimum Standard Materials
  Carbon Steel Stainless Steel Low Temp Carbon Steel
Body ✓ ✓ ✓
Disc and Spindle (Internals)   ✓  
Alternative Materials availabile upon request, e.g Inconel 625, Duplex, Supler Duplex

Dimensions*

Orifice API 526 Rating Inlet Size Outlet Size Flow Area General Dimensions Standard Lever
in2 A B C D E F Weight - (lbs)
D 150 x 150 1 2 0.12 4.13 4.49 16.61 1.14 3.54 19.29 35.3 37.5
300L x 150
300 x 150 1.26
600 x 150 1.34
900 x 300 1.5 2 5.51 19.37 1.73 21.89 68.3 72.8
1500 x 300
2500 x 300 1.5 3 5.51 7.01 20.39 2.36 22.91 86.0 90.4
E 150 x 150 1 2 0.22 4.13 4.49 16.61 1.14 3.54 19.29 35.3 37.5
300L x 150
300 x 150 1.26
600 x 150 1.34
900 x 300 1.5 2 5.51 19.37 1.73 21.89 68.3 72.8
1500 x 300
2500 x 300 1.5 3 5.51 7.01 20.39 2.36 22.91 86.0 90.4

* Displayed here is a particle table. Click here to see complete table.

Accessories

Test-Gag

O-Ring

Heating Jacket

Lever

Product Literature

Model 6400

Installations

Model 6400 Installation Instructions