IDV™ Inline Design Valve

Inline body design reclosing Safety Relief Valve, with conventional and/or balanced (bellows) designs.

IDV™ Inline Design Valve

Performance Features

  • In-line design with the same inlet and outlet flangeconnection size
  • Compact and light weight compared to traditional API safety relief valves
  • Superior capacity to API safety relief valves
  • ANSI/ASME B 16.5 and International flange connections
  • Optional integrated rupture disk at lnlet of valve
  • Smaller size; may be able to use a smaller valve size
  • Convenience of an in line flanged design
  • Install horizontally or vertically
  • Set pressure independent of back pressure, suitable for variable back pressure applications


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  • Set Pressures
  • Tolerance
  • Materials & Accessories
  • Documentation

Set Pressures

IDV™ Nominal Size
Inlet Size Outlet Size Flow Area* Set Pressure Range Media Code Section
1 1  0.66 sq in 15-500 psi Air XIII
1.5 1.5 1.59 sq in 15-500 psi Air XIII
2 2 2.69 sq in 15-500 psi Air XIII
3 3 5.95 sq in 15-500 psi Air XIII
4 4 10.40 sq in 15-500 psi Air XIII
6 6 23.52 sq in 15-500 psi Air XIII
8 8 41.27 sq in 15-500 psi Air XIII
10 10 64.78 sq in 15-500 psi Air XIII

 

IDV Typical Weight
IDV Size (in) IDV Weight (lbs) SRV Size (in) SRV Weight (lbs) Weight Comparison
1 40 1 x 2 42 95
1.5 50 1.5 x 2 58 86
2 80 2 x 3 84 95
3 126 3 x 4 146 86
4 182 4 x 6 260 70
6 294 6 x 8 412 71
8 406 8 x 10 660 62
10 568 10 x 14 1135 50

Burst Tolerance

Marked Burst Pressure Burst Tolerance
> 40 psig (> 2.7 barg) ± 5%
< 40 psig (< 2.7 barg) ± 2 psi
Operating Pressure Ratio 90% of set point over 1.38 barg; 90% of minimum below 1.38 barg.

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

Flange Torque*

Size Flange Rating Number of Studs Diam. Of Studs Minmum Length of Studs Stud Torque
in mm ANSI in in mm ft-lbs N-m
1 25 150 4 0.5 4 101.6 23 31
1.5 40 150 4 0.5 4.5 114.3 27 37
2 50 150 4 0.625 4.25 108 51 69
3 75 150 4 0.875 5.25 133.3 60 82
4 100 150 8  0.625 5 127 51 70
6 150 150 8 0.75 5.75 146 85 115
8 200 150 8 0.75 6 152.4 97 132
10 250 150 12 0.875 6.5 165.1 127 173

Accessories

BS&B supplies many of the Accessories required to safely and conveniently install our overpressure relief devices and complementary products. Through our professional team and global network of sales engineers and procurement personnel, we are able to provide the highest quality accessory products to meet your installation requirements.

Saf-T-Pin™ Buckling Pin Cartridge

The BPAV can be provided with buckling pin cartridges that are installed like an electrical fuse. The Saf-T-Pin buckling pin cartridge allows a “quick-change” option of buckling pins with a simple push-in/pull-out design for installation within the enclosure. Each Saf-T-Pin cartridge contains a calibrated buckling pin that is perfectly mounted for optimum performance.

Replacement Buckling Pins

Stainless steel pins with tags containing pressure and traceability information including the serial number of the BPAV device.

Product Literature

The IDV™ Safety Valve

Installations

IDV Relief Valve Installation Instruction

IDV Safety Valve Series Types

Disk Type
IDV Conventional / Standard (IDV) Valve
IDV-B IDV with a Bellows to isolate spring
IDV-C Standard IDV with Rupture Disk Cassette inserted into the inlet
IDV-H Standard IDV with an integrated Safety Head Outlet Flange
IDV-CB IDV-C with bellows
IDV-HB IDV-H with bellows

IDV Relief Valve Explosion View