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TECHNICAL BULLETIN
TB-109
SOLENOID VALVES AS USED IN DEEPWATER BOP CONTROL SYSTEMS

"DEEPWATER   MEANS    SMALLER"

First ask yourself this question: Why are shear-seal valves not used on aircraft, missiles, or spacecraft?

Twenty-two reasons why pressure-balanced solenoid valves are better than shear-seal valves:

Benefits of pressure-balanced solenoid valves:

1. Space utilization ­ 82% space savings
2. Lightweight ­ 68% weight savings
3. Long cycle life ­ 250,000 to 1 million cycles
4. Shock resistance
5. Corrosion resistant internally, including seawater
6. Low power consumption
7. Bubble-tight internal & external leakage
8. Contamination tolerant seats
9. Low friction
10. High flow-to-size ratio
11. Low maintenance

Collateral Benefits:

12. Reduce drilling rig downtime
13. Reduce risk of revenue loss
14. High reliability
15. Smaller control systems
16. Smaller topside handling systems
17. Smaller electrical cables
18. Size reduction or elimination of tubing runs
19. Permits use of pulsing
20. Permits use of batteries (remote power source)
21. Permits use of redundant and backup packages
22. Intervention friendly

Causes of premature failure in hydraulic systems:

a. Pressure pulsations
b. Water hammer
c. Cavitation
d. Fatigue
e. Improper testing methods

For further information refer to Technical Bulletins: TB-101, TB-102, TB-103.

Deepwater BOP control systems can be made a whole lot smaller.
"DEEPWATER MEANS SMALLER BOP CONTROL SYSTEMS"
"DEEPWATER MEANS SMALLER VALVES"

Compliments of Hydracon Company, Inc.
For catalogs or technical information click here or contact ALEX PULLOS at
Hydracon Company, Inc. PO Box 27584, Anaheim, CA 92809 USA
Tel: 714-281-2460 Fax: 714-281-1199
email: alex AT hydracon.com

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